VIA Technologies EPIA-M920 User manual

2.05-11102016-171800
USER MANUAL
EPIA-M920
Highly-integr ted low-power
pl tform with rich fe ture set
nd multimedi c p bilities

Copyright
Copyright © 2013-2016 VIA Technologies Incorpor ted. All rights reserved.
No p rt of this document m y be reproduced, tr nsmitted, tr nscribed, stored in retriev l system, or tr nsl ted into ny l ngu ge,
in ny form or by ny me ns, electronic, mech nic l, m gnetic, optic l, chemic l, m nu l or otherwise without the prior written
permission of VIA Technologies, Incorpor ted.
Tr dem rks
All tr dem rks re the property of their respective holders.
Discl imer
No license is gr nted, implied or otherwise, under ny p tent or p tent rights of VIA Technologies. VIA Technologies m kes no
w rr nties, implied or otherwise, in reg rd to this document nd to the products described in this document. The inform tion
provided in this document is believed to be ccur te nd reli ble s of the public tion d te of this document. However, VIA
Technologies ssumes no responsibility for the use or misuse of the inform tion (including use or connection of extr
device/equipment/ dd-on c rd) in this document nd for ny p tent infringements th t m y rise from the use of this document. The
inform tion nd product specific tions within this document re subject to ch nge t ny time, without notice nd without oblig tion
to notify ny person of such ch nge.
VIA Technologies, Inc. reserves the right the m ke ch nges to the products described in this m nu l t ny time without prior notice.
Regul tory Compli nce
FCC-A R dio Frequency Interference St tement
This equipment h s been tested nd found to comply with the limits for cl ss A digit l device, pursu nt to p rt 15 of the FCC rules.
These limits re designed to provide re son ble protection g inst h rmful interference when the equipment is oper ted in
commerci l environment. This equipment gener tes, uses, nd c n r di te r dio frequency energy nd, if not inst lled nd used in
ccord nce with the instruction m nu l, m y c use h rmful interference to r dio communic tions. Oper tion of this equipment in
residenti l re is likely to c use h rmful interference, in which c se the user will be required to correct the interference t his
person l expense.
Notice 1
The ch nges or modific tions not expressly pproved by the p rty responsible for compli nce could void the user's uthority to
oper te the equipment.
Notice 2
Shielded interf ce c bles nd A.C. power cord, if ny, must be used in order to comply with the emission limits.
Notice 3
The product described in this document is designed for gener l use, VIA Technologies ssumes no responsibility for the conflicts or
d m ges rising from incomp tibility of the product. Check comp tibility issue with your loc l s les represent tives before pl cing
n order.

B ttery Recycling nd Dispos l
Only use the ppropri te b ttery specified for this product.
Do not re-use, rech rge, or rehe t n old b ttery.
Do not ttempt to force open the b ttery.
Do not disc rd used b tteries with regul r tr sh.
Disc rd used b tteries ccording to loc l regul tions.
S fety Prec utions
Alw ys re d the s fety instructions c refully.
Keep this User's M nu l for future reference.
All c utions nd w rnings on the equipment should be noted.
Keep this equipment w y from humidity.
L y this equipment on reli ble fl t surf ce before setting it up.
M ke sure the volt ge of the power source nd djust properly 110/220V before connecting the
equipment to the power inlet.
Pl ce the power cord in such w y th t people c nnot step on it.
Alw ys unplug the power cord before inserting ny dd-on c rd or module.
If ny of the following situ tions rises, get the equipment checked by uthorized service personnel:
 The power cord or plug is d m ged.
 Liquid h s penetr ted into the equipment.
 The equipment h s been exposed to moisture.
 The equipment h s not worked well or you c nnot get it work ccording to User's M nu l.
 The equipment h s dropped nd d m ged.
 The equipment h s obvious sign of bre k ge.
Do not le ve this equipment in n environment unconditioned or in stor ge temper ture bove
60°C (140°F). The equipment m y be d m ged.
Do not le ve this equipment in direct sunlight.
Never pour ny liquid into the opening. Liquid c n c use d m ge or electric l shock.
Do not pl ce nything over the power cord.
Do not cover the ventil tion holes. The openings on the enclosure protect the equipment from
overhe ting

EPIA-M920 User M nu l
iv
Box Contents
EPIA-M920-20Q SKU
1 x EPIA-M920 m inbo rd (with 2.0GHz VIA Qu dCore E-Series processor)- with F n
1 x SATA c ble
1 x I/O br cket
EPIA-M920-16QE SKU
1 x EPIA-M920 m inbo rd (with 1.6GHz VIA Eden
®
X4 processor) - F nless
1 x SATA c ble
1 x I/O br cket
EPIA-M920-10E SKU
1 x EPIA-M920 m inbo rd (with 1.0GHz VIA Eden
®
X2 processor) - F nless
1 x SATA c ble
1 x I/O br cket
Ordering Inform tion
Model N me Description
EPIA-M920-20Q Mini-ITX bo rd with 2.0GHz VIA Qu dCore E-Series CPU with 2 x HDMI,
VGA, 2 x LVDS, 3 x USB 3.0, 6 x USB 2.0, 4 x COM, 2 x Gig bit Ethernet,
2 x SATA, PCIe x4 slot, ATX power connector
EPIA-M920-16QE Mini-ITX bo rd with 1.6GHz VIA Eden
®
X4 CPU with 2 x HDMI, VGA,
2 x LVDS, 3 x USB 3.0, 6 x USB 2.0, 4 x COM, 2 x Gig bit Ethernet,
2 x SATA, PCIe x4 slot, ATX power connector
EPIA-M920-10E Mini-ITX bo rd with 1.0GHz VIA Eden
®
X2 CPU with 2 x HDMI, VGA,
2 x LVDS, 3 x USB 3.0, 6 x USB 2.0, 4 x COM, 2 x Gig bit Ethernet,
2 x SATA, PCIe x4 slot, ATX power connector
Option l Accessories
I/O Exp nsion C rds
P rt Number Description
LPC-01 Exp nsion module for four COM ports
LPC-02 Exp nsion module for four COM ports (5V or 12V)
LPC-04 Exp nsion module for two or four COM ports (5V or 12V)
PWB-M120 120W DC-DC power bo rd, volt ge r nge from 12V~24V
Wireless Modules
P rt Number Description
EMIO-1533-00A2 VNT9271 IEEE 802.11 b/g/n USB Wi-Fi module with ssembly kit
EMIO-2531-00A1 VAB-820-W-M IEEE 802.11 b/g/n miniPCIe Wi-Fi & Bluetooth module
with ssembly kit nd ntenn
EMIO-5531-00A1 VAB-820-W IEEE 802.11 b/g/n USB Wi-Fi & Bluetooth module with
ssembly kit nd ntenn

EPIA-M920 User M nu l
v
T ble of Contents
1. Product Overview ........................................................................................................................ 1
1.1. Key Fe tures nd Benefits ................................................................................................................................ 1
1.1.1. VIA Qu dCore E-Series/VIA Eden
®
X4/VIA Eden
®
X2 ...................................................................... 1
1.1.2. VIA VX11H MSPIII Chipset ....................................................................................................................... 1
1.1.3. Modul r Exp nsion Options .................................................................................................................... 2
1.2. Product Specific tions ...................................................................................................................................... 3
1.3. L yout Di gr m .................................................................................................................................................. 5
1.4. Product Dimensions .......................................................................................................................................... 7
1.5. Height Distribution ............................................................................................................................................ 8
2. I/O Interf ce ................................................................................................................................... 9
2.1. Extern l I/O Ports .............................................................................................................................................. 9
2.1.1. PS/2 Port .....................................................................................................................................................10
2.1.2. HDMI
®
Port ................................................................................................................................................10
2.1.3. COM Port ...................................................................................................................................................11
2.1.4. Gig bit Ethernet Port ...............................................................................................................................11
2.1.5. Audio J ck ..................................................................................................................................................12
2.1.6. VGA Port ....................................................................................................................................................12
2.1.7. USB 2.0 Port ...............................................................................................................................................13
2.1.8. USB 3.0 Port ...............................................................................................................................................13
2.2. Onbo rd Connectors ..................................................................................................................................... 14
2.2.1. ATX Power Connector ............................................................................................................................14
2.2.2. LVDS P nel Connector ............................................................................................................................15
2.2.3. LVDS Inverter Connector ........................................................................................................................16
2.2.4. Digit l I/O Pin He der .............................................................................................................................17
2.2.5. Extern l Therm l Resister Pin He der .................................................................................................17
2.2.6. Front P nel Pin He der ...........................................................................................................................18
2.2.7. SMBus Pin He der ....................................................................................................................................18
2.2.8. CPU nd System F n Connectors .........................................................................................................19
2.2.9. SATA Connector ......................................................................................................................................19
2.2.10. USB 2.0 Pin He der ..................................................................................................................................20
2.2.11. COM Pin He der ......................................................................................................................................20
2.2.12. PS/2 Keybo rd nd Mouse Pin He der ................................................................................................21
2.2.13. Front Audio Pin He der ..........................................................................................................................21
2.2.14. SPI Pin He der ...........................................................................................................................................22
2.2.15. LPC Pin He der .........................................................................................................................................22
2.2.16. SPDIF Connector .......................................................................................................................................23
2.2.17. CMOS B ttery Slot ...................................................................................................................................23
2.2.18. USB 3.0 Connector ...................................................................................................................................24
3. Onbo rd Jumpers ....................................................................................................................... 25
3.1. Cle r CMOS Jumper ...................................................................................................................................... 26
3.2. SATA DOM Power Select Jumper.............................................................................................................. 27
3.3. COM1 nd COM2 Volt ge Select Jumper ............................................................................................... 28
3.4. COM3 nd COM4 Volt ge Select Jumper ............................................................................................... 29
3.5. SPI Address Select Jumper........................................................................................................................... 30
3.6. VDD Power Select Jumper ........................................................................................................................... 30
3.7. LVDS Jumper Settings .................................................................................................................................... 31
4. Exp nsion Slots ........................................................................................................................... 32
4.1. DDR3 Memory Slots ...................................................................................................................................... 32
4.1.1. Inst lling Memory Module..................................................................................................................32
4.1.2. Removing Memory Module ................................................................................................................33
4.2. PCI Express Slot .............................................................................................................................................. 34
5. H rdw re Inst ll tion ................................................................................................................ 35
5.1. Inst lling into Ch ssis ................................................................................................................................. 35

EPIA-M920 User M nu l
vi
5.1.1. Suggested minimum ch ssis dimensions ............................................................................................35
5.1.2. Suggested minimum ch ssis height ......................................................................................................36
5.1.3. Suggested keepout re s ........................................................................................................................37
6. BIOS Setup Utility....................................................................................................................... 38
6.1. Entering the BIOS Setup Utility ................................................................................................................... 38
6.2. Control Keys .................................................................................................................................................... 38
6.3. N vig ting the BIOS Menus .......................................................................................................................... 38
6.4. Getting Help .................................................................................................................................................... 38
6.5. M in Menu ........................................................................................................................................................ 39
6.5.1. BIOS Inform tion ......................................................................................................................................39
6.5.2. Memory Inform tion ................................................................................................................................39
6.5.3. System L ngu ge ......................................................................................................................................39
6.5.4. System D te ...............................................................................................................................................39
6.5.5. System Time ..............................................................................................................................................39
6.6. Adv nced Settings.......................................................................................................................................... 40
6.6.1. ACPI Settings .............................................................................................................................................41
6.6.1.1. En ble Hibern tion ......................................................................................................................41
6.6.1.2. ACPI Sleep St te ...........................................................................................................................41
6.6.2. S5 RTC W ke Settings .............................................................................................................................42
6.6.2.1. W ke system with Fixed Time ...................................................................................................42
6.6.2.2. W ke system with Dyn mic Time .............................................................................................42
6.6.3. CPU Inform tion .......................................................................................................................................43
6.6.4. SATA Configur tion .................................................................................................................................43
6.6.4.1. SATA Mode ...................................................................................................................................43
6.6.5. F71869 Super IO Configur tion ............................................................................................................44
6.6.5.1. Seri l Port 0 Configur tion .........................................................................................................44
6.6.5.1.1. Seri l Port ................................................................................................................................44
6.6.5.2. Seri l Port 1 Configur tion .........................................................................................................44
6.6.5.2.1. Seri l Port ................................................................................................................................44
6.6.5.2.2. Device Mode ..........................................................................................................................44
6.6.6. F71869 H/W Monitor ...............................................................................................................................45
6.6.6.1. CPU Sm rt F n Configur tion .....................................................................................................45
6.6.6.1.1. Sm rt F n Support .................................................................................................................45
6.6.6.2. System Sm rt F n Configur tion ................................................................................................45
6.6.6.2.1. Sm rt F n Support .................................................................................................................45
6.6.7. Clock Gener tor Configur tion .............................................................................................................46
6.6.7.1. CPU Spre d Spectrum .................................................................................................................46
6.6.7.2. PCIe Spre d Spectrum .................................................................................................................46
6.6.8. On Bo rd Configur tion ..........................................................................................................................47
6.6.8.1. OnBo rd LAN En ble ..................................................................................................................47
6.6.8.2. S5 W keup by PME#....................................................................................................................47
6.6.8.3. EuP/ErP Lot6 support ...................................................................................................................47
6.6.8.4. 1CH LVDS B cklight Control .....................................................................................................47
6.6.8.5. 2CH LVDS B cklight Control .....................................................................................................47
6.7. Chipset Settings .............................................................................................................................................. 48
6.7.1. DRAM Configur tion ................................................................................................................................49
6.7.1.1. DRAM Clock ..................................................................................................................................49
6.7.1.2. VGA Sh re Memory (Fr me Buffer) ..........................................................................................49
6.7.2. Video Configur tion.................................................................................................................................50
6.7.2.1. Du l VGA En ble .........................................................................................................................50
6.7.2.2. Prim ry Gr phics Ad pter ...........................................................................................................50
6.7.2.3. Select Displ y Device Control ..................................................................................................50
6.7.2.4. Select Displ y Device 1 nd 2 ..................................................................................................50
6.7.2.5. P nel Type ......................................................................................................................................51
6.7.2.6. P nel Type2 ...................................................................................................................................51
6.7.3. UART Configur tion .................................................................................................................................52
6.7.3.1. UART 0 En ble ..............................................................................................................................52
6.7.3.2. UART 1 En ble ..............................................................................................................................52

EPIA-M920 User M nu l
vii
6.7.4. PMU_ACPI Configur tion ........................................................................................................................53
6.7.4.1.1. AC Loss Auto-rest rt .............................................................................................................53
6.7.4.1.2. USB S4 W keUp .....................................................................................................................53
6.7.5. HDAC Configur tion ................................................................................................................................54
6.7.5.1. OnChip HDAC Device ................................................................................................................54
6.7.6. SDIO_CR Configur tion ..........................................................................................................................55
6.7.6.1.1. SDIO Host Controller ...........................................................................................................55
6.7.6.1.2. SDIO Specific tion Ver3.0 Support ...................................................................................55
6.7.6.1.3. Volt ge Support 1.8v ............................................................................................................55
6.7.6.1.4. High Speed Support .............................................................................................................55
6.7.6.1.5. Driver Type Select .................................................................................................................55
6.7.6.1.6. SDR50 Support .......................................................................................................................55
6.7.6.1.7. SDR104 Support.....................................................................................................................55
6.7.6.1.8. DDR50 Support ......................................................................................................................55
6.7.6.1.9. SDR50 Tuning En ble ...........................................................................................................55
6.7.6.1.10. Timer Count for Re-Tuning ..................................................................................................55
6.7.7. Others Configur tion ...............................................................................................................................56
6.7.7.1. WATCHDOG Timer En ble .......................................................................................................56
6.7.7.2. Keybo rd/Mouse W keup Control ...........................................................................................56
6.8. Boot Settings .................................................................................................................................................... 57
6.8.1. Boot Configur tion ...................................................................................................................................57
6.8.1.1. Setup Prompt Timeout ................................................................................................................57
6.8.1.2. BootupNumLock St te .................................................................................................................57
6.8.1.3. Displ y Logo ..................................................................................................................................57
6.8.2. Boot Option Priorities .............................................................................................................................57
6.8.2.1. Boot Option #1 .............................................................................................................................57
6.8.3. Network Device BBS Priorities ..............................................................................................................57
6.8.3.1. L unch PXE OpROM policy .......................................................................................................57
6.9. Security Settings .............................................................................................................................................. 58
6.9.1. Security Settings .......................................................................................................................................58
6.9.1.1. Administr tor P ssword / User P ssword ...............................................................................58
6.9.1.2. P ssword Check ............................................................................................................................58
6.10. S ve & Exit Options ....................................................................................................................................... 59
6.10.1. S ve Ch nges nd Exit ............................................................................................................................59
6.10.2. Disc rd Ch nges nd Exit .......................................................................................................................59
6.10.3. S ve Ch nges nd Reset .........................................................................................................................59
6.10.4. Disc rd Ch nges nd Reset ....................................................................................................................59
6.10.5. S ve Ch nges ............................................................................................................................................59
6.10.6. Disc rd Ch nges .......................................................................................................................................59
6.10.7. VIA Networking Boot gent ....................................................................................................................59
6.10.8. L unch EFI Shell from filesystem Device ............................................................................................59
7. Softw re nd Technic l Supports ........................................................................................... 60
7.1. Microsoft nd Linux Support........................................................................................................................ 60
7.1.1. Driver Inst ll tion .....................................................................................................................................60
7.2. Technic l Supports nd Assist nce ............................................................................................................ 60
Appendix A. Power Consumption Report .................................................................................... 61
A.1. EPIA-M920 Rev. B ATX Power (EPIA-M920-20Q SKU) ............................................................................. 61
A.1.1. IDLE St tus ....................................................................................................................................................61
A.1.2. S3 St tus ........................................................................................................................................................61
A.1.3. MP3 Pl ying (Windows Medi Pl yer 10)..............................................................................................61
A.1.4. MP4 Pl ying (Windows Medi Pl yer 10)..............................................................................................62
A.1.5. Gr phics: Run 3D M rks’06 .......................................................................................................................62
A.1.6. Function l Test: Run BurnIn Test 6.0 .......................................................................................................62
A.1.7. Gig LAN Network Access x2 Ports .......................................................................................................63
A.1.8. S5 St tus ........................................................................................................................................................63
A.2. EPIA-M920 Rev. B ATX Power (EPIA-M920-16QE SKU) ........................................................................... 64
A.2.1. IDLE St tus ....................................................................................................................................................64

EPIA-M920 User M nu l
viii
A.2.2. S3 St tus ........................................................................................................................................................64
A.2.3. MP3 Pl ying (Windows Medi Pl yer 10)..............................................................................................64
A.2.4. MP4 Pl ying (Windows Medi Pl yer 10)..............................................................................................65
A.2.5. Gr phics: Run 3D M rks’06 .......................................................................................................................65
A.2.6. Function l Test: Run BurnIn Test 6.0 .......................................................................................................65
A.2.7. Gig LAN Network Access x2 Ports .......................................................................................................66
A.2.8. S5 St tus ........................................................................................................................................................66
A.3. EPIA-M920 Rev. 2 DVT ATX Power (EPIA-M920-10E SKU) ............................................................................ 67
A.3.1. Pl ying DVD – Power DVD 5.0 ................................................................................................................67
A.3.2. Pl ying MP3-Medi Pl yer .........................................................................................................................67
A.3.3. Running Network Applic tion ..................................................................................................................67
A.3.4. IDLE ................................................................................................................................................................68
A.3.5. Run BurnIn Test ............................................................................................................................................68
A.3.6. S3 ....................................................................................................................................................................68
A.3.7. S5 ....................................................................................................................................................................69
A.3.8. EuP/ErP En ble S3 .......................................................................................................................................69
A.3.9. EuP/ErP En ble S5 .......................................................................................................................................69
Appendix B. M ting Connector Vendor Lists ............................................................................... 70

EPIA-M920 User M nu l
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List of Figures
Figure 1: L yout di gr m of the EPIA-M920 m inbo rd (top view) .........................................................................5
Figure 2: Mounting holes nd dimensions of the EPIA-M920 m inbo rd ...............................................................7
Figure 3: Extern l I/O port dimensions of the EPIA-M920 m inbo rd ....................................................................7
Figure 4: Height distribution of the EPIA-M920 m inbo rd (for f n model) ...............................................................8
Figure 5: Height distribution of the EPIA-M920 m inbo rd (for f nless model) ........................................................8
Figure 6: B ck p nel I/O ports...........................................................................................................................................9
Figure 7: PS/2 port di gr m............................................................................................................................................. 10
Figure 8: HDMI
®
port di gr m ........................................................................................................................................ 10
Figure 9: COM port di gr m ........................................................................................................................................... 11
Figure 10: Gig bit Ethernet port di gr m .................................................................................................................... 11
Figure 11: Audio j ck recept cle st ck ........................................................................................................................ 12
Figure 12: VGA port di gr m ......................................................................................................................................... 12
Figure 13: USB 2.0 port di gr m .................................................................................................................................... 13
Figure 14: USB 3.0 port di gr m .................................................................................................................................... 13
Figure 15: ATX power connector di gr m .................................................................................................................. 14
Figure 16: LVDS p nel connector di gr m.................................................................................................................. 15
Figure 17: LVDS Inverter connector di gr m .............................................................................................................. 16
Figure 18: Digit l I/O pin he der di gr m ................................................................................................................... 17
Figure 19: Extern l Therm l Resister pin he der di gr m ....................................................................................... 17
Figure 20: Front p nel pin he der di gr m ................................................................................................................. 18
Figure 21: SMBus pin he der di gr m .......................................................................................................................... 18
Figure 22: CPU nd System f n connector di gr m .................................................................................................. 19
Figure 23: SATA connector di gr m ............................................................................................................................. 19
Figure 24: USB 2.0 pin he der di gr m ........................................................................................................................ 20
Figure 25: COM pin he der di gr m ............................................................................................................................ 20
Figure 26: PS/2 keybo rd nd mouse pin he der di gr m ...................................................................................... 21
Figure 27: Front udio pin he der ................................................................................................................................. 21
Figure 28: SPI pin he der di gr m ................................................................................................................................. 22
Figure 29: LPC pin he der di gr m ............................................................................................................................... 22
Figure 30: SPDIF connector di gr m ............................................................................................................................. 23
Figure 31: CMOS b ttery slot di gr m ......................................................................................................................... 23
Figure 32: USB 3.0 connector di gr m ......................................................................................................................... 24
Figure 33: Jumper settings ex mple ............................................................................................................................. 25
Figure 34: Cle r CMOS jumper di gr m ...................................................................................................................... 26
Figure 35: SATA DOM volt ge select jumper di gr m ............................................................................................ 27
Figure 36: COM1 nd COM2 volt ge select jumper di gr m ................................................................................ 28
Figure 37: COM3 nd COM4 volt ge select jumper di gr m ................................................................................ 29
Figure 38: SPI ddress select jumper di gr m ............................................................................................................ 30
Figure 39: VDD power select jumper di gr m........................................................................................................... 30
Figure 40: LVDS jumper di gr ms ................................................................................................................................. 31
Figure 41: DDR3 memory slots di gr m ...................................................................................................................... 32
Figure 42: Inserting the memory module .................................................................................................................... 32
Figure 43: Locking the memory module ...................................................................................................................... 32
Figure 44: Diseng ging the locking clips ..................................................................................................................... 33
Figure 45: Removing the memory module .................................................................................................................. 33
Figure 46: PCI Express slot di gr m .............................................................................................................................. 34
Figure 47: Suggested minimum ch ssis dimensions .................................................................................................. 35
Figure 48: Suggested minimum intern l ch ssis ceiling height (for f nless model) .......................................... 36
Figure 49: Suggested minimum intern l ch ssis ceiling height (for f n model) ................................................. 36
Figure 50: Suggested keepout re s ............................................................................................................................. 37
Figure 51: Illustr tion of the M in menu screen ......................................................................................................... 39
Figure 52: Illustr tion of the Adv nced Settings screen .......................................................................................... 40
Figure 53: Illustr tion of the ACPI Settings screen .................................................................................................... 41
Figure 54: Illustr tion of S5 RTC W ke Settings screen............................................................................................ 42
Figure 55: Illustr tion of CPU Inform tion screen ...................................................................................................... 43
Figure 56: Illustr tion of SATA Configur tion screen ............................................................................................... 43

EPIA-M920 User M nu l
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Figure 57: Illustr tion of F71869 Super IO Configur tion screen ........................................................................... 44
Figure 58: Illustr tion of F71869 H/W Monitor screen ............................................................................................. 45
Figure 59: Illustr tion of Clock Gener tor Configur tion screen ........................................................................... 46
Figure 60: Illustr tion of On Bo rd Configur tion screen ........................................................................................ 47
Figure 61: Illustr tion of Chipset Settings screen ...................................................................................................... 48
Figure 62: Illustr tion of DRAM Configur tion screen .............................................................................................. 49
Figure 63: Illustr tion of Video Configur tion screen ............................................................................................... 50
Figure 64: Illustr tion of UART Configur tion screen ............................................................................................... 52
Figure 65: Illustr tion of PMU_ACPI Configur tion screenOther Control ........................................................... 53
Figure 66: Illustr tion of Other Control screen .......................................................................................................... 53
Figure 67: Illustr tion of HDAC Configur tion screen .............................................................................................. 54
Figure 68: Illustr tion of SDIO_CR Configur tion screen......................................................................................... 55
Figure 69: Illustr tion of Others Configur tion screen ............................................................................................. 56
Figure 70: Illustr tion of Boot Settings screen ............................................................................................................ 57
Figure 71: Illustr tion of Security Settings screen ...................................................................................................... 58
Figure 72: Illustr tion of S ve & Exit Options screen ............................................................................................... 59

EPIA-M920 User M nu l
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List of T bles
T ble 1: L yout di gr m description t ble of the EPIA-M920 m inbo rd .............................................................6
T ble 2: L yout di gr m description t ble of the b ck p nel I/O ports.................................................................9
T ble 3: PS/2 port pinout ................................................................................................................................................ 10
T ble 4: HDMI
®
port pinout ........................................................................................................................................... 10
T ble 5: COM port pinout .............................................................................................................................................. 11
T ble 6: Gig bit Ethernet port pinout .......................................................................................................................... 11
T ble 7: Gig bit Ethernet LED color definition .......................................................................................................... 11
T ble 8: Audio j ck recept cle pinout ........................................................................................................................ 12
T ble 9: VGA port pinout ............................................................................................................................................... 12
T ble 10: USB 2.0 port pinout ....................................................................................................................................... 13
T ble 11: USB 3.0 port pinout ....................................................................................................................................... 13
T ble 12: ATX power connector pinout ..................................................................................................................... 14
T ble 13: LVDS p nel connector pinout ..................................................................................................................... 15
T ble 14: LVDS Inverter connector pinout ................................................................................................................. 16
T ble 15: Digit l I/O pin he der pinout ...................................................................................................................... 17
T ble 16: Extern l Therm l Resister pin he der pinout ........................................................................................... 17
T ble 17: Front p nel pin he der pinout .................................................................................................................... 18
T ble 18: SMBus pin he der pinout .............................................................................................................................. 18
T ble 19: CPU nd System f n connector pinout ...................................................................................................... 19
T ble 20: SATA connector pinout ................................................................................................................................ 19
T ble 21: USB 2.0 pin he der pinout ........................................................................................................................... 20
T ble 22: COM pin he der pinout ................................................................................................................................ 20
T ble 23: PS/2 keybo rd nd mouse pin he der pinout .......................................................................................... 21
T ble 24: Front udio pin he der pinout ..................................................................................................................... 21
T ble 25: SPI pin he der pinout .................................................................................................................................... 22
T ble 26: LPC pin he der pinout ................................................................................................................................... 22
T ble 27: SPDIF connector pinout ................................................................................................................................ 23
T ble 28: CMOS b ttery slot pinout ............................................................................................................................ 23
T ble 29: USB 3.0 connector pinout ............................................................................................................................ 24
T ble 30: Cle r CMOS jumper settings ....................................................................................................................... 26
T ble 31: SATA DOM volt ge select jumper settings ............................................................................................. 27
T ble 32: COM1 nd COM2 volt ge select jumper settings ................................................................................. 28
T ble 33: COM3 nd COM4 volt ge select jumper settings ................................................................................. 29
T ble 34: SPI ddress select jumper settings ............................................................................................................. 30
T ble 35: VDD power select jumper settings ............................................................................................................ 30
T ble 36: LVDS jumper settings..................................................................................................................................... 31
T ble 37: EPIA-M920 m ting connector vendor lists ............................................................................................... 70

EPIA-M920 User M nu l
1
1. Product Overview
The VIA EPIA-M920 Mini-ITX m inbo rd is high perform nce n tive x86 m inbo rd designed m inly for
embedded, POS, Kiosk, ATM nd digit l medi pplic tion. It c n lso be used for v rious dom in
pplic tions such s desktop PC, industri l PC, etc. The m inbo rd is b sed on the VIA VX11H MSPIII
(Medi System Processor) chipset th t fe tures the VIA C-640 DX11 with 2D/3D gr phics nd video
cceler tors for rich digit l medi perform nce.
The VIA EPIA-M920 includes powerful, secure, nd efficient VIA Eden
®
X2/VIA Qu dCore E-Series/VIA
Eden
®
X4 processor. The VIA Eden
®
X2 processor includes the VIA P dlock Security Engine, VIA
CoolStre m
™
Architecture, VIA StepAhe d
™
Technology Suite, nd VIA TwinTurbo
™
technology. Where s
the VIA Qu dCore E-Series/VIA Eden
®
X4 processor includes the VIA AES Security Engine, VIA
CoolStre m
™
Architecture nd VIA PowerS ver
™
Technology.
The VIA EPIA-M920 h s two 1333 MHz DDR3 SODIMM slots th t support up to 16GB memory size. The
VIA EPIA-M920 provides support for high fidelity udio with its included VIA VT2021 High Definition
Audio Codec. In ddition it supports two SATA 3Gb/s stor ge devices.
The VIA EPIA-M920 is comp tible with full r nge of Mini-ITX ch ssis s well s FlexATX nd MicroATX
enclosures nd power supplies. The VIA EPIA-M920 is fully comp tible with Microsoft
®
nd Linux oper ting
systems.
1.1. Key Fe tures nd Benefits
1.1.1. VIA Qu dCore E-Series/VIA Eden
®
X4/VIA Eden
®
X2
The VIA Qu dCore E-Series/VIA Eden
®
X4 is 64-bit supersc l r x86 qu d core processor combine on
two dies. It is b sed on dv nced 28 n nometer process technology p cked into n ultr -comp ct
N noBGA2 p ck ge me suring 21mm x 21mm. The VIA Qu dCore E-Series/VIA Eden
®
X4 processor
delivers superb perform nce on multi-t sking, multimedi pl yb ck, productivity nd internet browsing
in low power budget.
The VIA Eden
®
X2 is 64-bit supersc l r x86 du l core processor b sed on 40 n nometer process
technology. P cked into n ultr -comp ct N noBGA2 p ck ge (me suring 21mm x 21mm), it delivers n
energy-efficient yet powerful perform nce, with cool nd quiet oper tion.
Note:
For Windows 7 nd Windows Server 2008 R2 users only:
If encounter the issue such s the oper ting system recognize the VIA Du l-Core CPU s two processors inste d
of one processor with two cores. Downlo d nd inst ll the hotfix rele sed by Microsoft to ddress this issue.
The downlo d ble hotfix is v il ble t http://support.microsoft.com/kb/2502664
VIA Qu dCore E-Series, VIA Eden
®
X4 nd Eden
®
X2 processors re ide l for embedded system
pplic tions such s industri l PCs, test m chines, me suring equipment, digit l sign ge, medic l PCs,
monitoring systems, g ming m chines, in-vehicle entert inment, etc.
1.1.2. VIA VX11H MSPIII Chipset
The VIA VX11H is the fourth gener tion, highly integr ted Medi System Processor which provides high
qu lity digit l video stre ming nd high definition video pl yb ck. It fe tures the VIA C-640 DX11 2D/3D
gr phics nd video processor, High Definition video decoder nd supports DDR3 1333 controller nd USB
3.0 interf ce.
The VIA VX11H offers superb-gr phics perform nce, immersive visu l experience, nd supports DirectX
11.0 th t llows re listic 3D rendering nd incre sed visu l cuity. It is lso b sed on highly
sophistic ted power efficient rchitecture th t en bles such rich integr tion into comp ct p ck ge.

EPIA-M920 User M nu l
2
1.1.3. Modul r Exp nsion Options
The VIA EPIA-M920 ensures long-term us bility with its support for industry st nd rd exp nsion options.
Its support for leg cy PCI exp nsion c rds helps to smooth nd reduce the costs of tr nsitioning to newer
exp nsion technologies. The VIA EPIA-M920 en bles comp nies to slowly roll out upgr des s necess ry
inste d of h ving to repl ce everything ll t once. This ensures th t comp nies using the EPIA-M920
obt in the m ximum benefits from its p st investments in PCI exp nsion c rds.
The VIA EPIA-M920 lso includes 4-L ne PCI Express 2.0 exp nsion slot th t provides protection g inst
obsolescence.

EPIA-M920 User M nu l
3
1.2. Product Specific tions
Processor
oVIA Qu dCore E-Series 2.0GHz processor (for EPIA-M920-20Q SKU)-with F n
oVIA Eden
®
X2 1.0GHz processor (for EPIA-M920-10E SKU)-F nless
oVIA Eden
®
X4 1.6GHz processor (for EPIA-M920-16QE SKU)-F nless
Chipset
oVIA VX11H Medi System Processor
System Memory
o2 x DDR3 1333 SODIMM slots
oSupports up to 8GB memory per slot
Note:
The re l memory size m y show less th n 16GB due to some c p city re used for BIOS or other functions.
Stor ge
o2 x SATA connectors
Gr phics
oIntegr ted C-640 HD DX11 3D/2D gr phics with MPEG-2, WMV9, VC1, H.264 decoding
cceler tion
LAN
oRe ltek-RTL8111G Gig bit Ethernet controller (for EPIA-M920-20Q SKU nd EPIA-M920-
16QE SKU)
oVT6130 Gig bit Ethernet controller (for EPIA-M920-10E SKU)
Audio
oVIA VT2021 High Definition Audio Codec
Super I/O
oFintek F71869E
Onbo rd I/O
o2 x USB 2.0 pin he ders for 4 ports
o1 x USB 3.0 connector for 1 port
o2 x SATA connectors
o2 x SATA DOM power selectors
o1 x Du l ch nnel 18/24-bit LVDS p nel connector (DVP, VT1636)
o1 x Single ch nnel 18/24-bit LVDS p nel connector (VX11H intern l)
o2 x B cklight control connectors for inverter power nd brightness control
o1 x Front udio pin he der (for Line-out nd Mic-in)
o1 x PS/2 keybo rd/mouse pin he der
o3 x COM pin he ders (2 from VX11H, powered with select ble 5V/12V)
o1 x LPC pin he der
o1 x SMBus pin he der
o1 x S/PDIF-out connector
o1 x Digit l I/O pin he ders (4GPI + 4 GPO)
o1 x Front p nel pin he der
o2 x Sm rt F n pin he ders for CPU nd System
o1 x ATX power connector
o1 x PCIe x4 slot
o1 x SD c rd (SDHC/SDXC) pin he der
o1 x Extern l therm l resister pin he der
o1 x SPI pin he der

EPIA-M920 User M nu l
4
B ck P nel I/O
o2 x USB 3.0 ports
o2 x USB 2.0 ports
o2 x HDMI
®
ports
o1 x VGA port
o1 x COM port (powered with select ble 5V/12V)
o2 x Gig bit Ethernet ports
o3 x Audio j cks: Line-in, Line-out, nd Mic-in
o2 x PS/2 keybo rd/mouse ports
BIOS
oAMI Aptio UEFI BIOS, 4MB Fl sh memory
Oper ting System
oWindows 8.1/8/7
oWindows Embedded St nd rd 7
oWindows Embedded POSRe dy 7
oLinux
Power Supply
oATX power connector
System Monitoring & M n gement
oW ke-on-LAN
oKeybo rd Power-on
oTimer Power-on
oSystem power m n gement
oAC power f ilure recovery
oW tchdog Timer
Oper ting Temper ture
o0°C ~ 60°C
Oper ting Humidity
o0% ~ 95% (non-condensing)
Form F ctor
oMini-ITX
o17cm x 17cm (6.7” x 6.7”)
Compli nce
oCE
oFCC
Note:
As the oper ting temper ture provided in the specific tions is result of the test performed in VIA’s ch mber,
number of v ri bles c n influence this result. Ple se note th t the working temper ture m y v ry depending on
the ctu l situ tion nd environment. It is highly suggested to execute solid testing nd t ke ll the v ri bles
into consider tion when building the system. Ple se ensure th t the system runs well under the oper ting
temper ture in terms of pplic tion.

EPIA-M920 User M nu l
5
1.3. L yout Di gr m
Figure 1: L yout di gr m of the EPIA-M920 m inbo rd (top view)
Item Description
1 PS/2 keybo rd nd mouse pin he der (JKBMS)
2 SMBus pin he der (SMBUS1)
3 Digit l I/O pin he ders (DIO1)
4 VDD power select jumper (J9)
5 COM4 pin he der
6 Front p nel pin he der (F_PANEL)
7 LVDS1 power select jumper (J14)
8 LVDS2 power select jumper (J15)
9 LVDS inverter connector 2 (INVERTER2)
10 LVDS inverter connector 1 (INVERTER1)
11 LVDS connector 2 (LVDS2)
12 LVDS connector 1 (LVDS1)
13 COM3 pin he der
14 LPC pin he der (LPC1)
15 System f n connector (SYSFAN)
16 VIA VX11H chipset
17 Memory slot 2 (SODIMM2)
18 Memory slot 1(SODIMM1)
19 ATX power supply connector (ATX_POWER2)

EPIA-M920 User M nu l
6
20 CPU f n connector (CPUFAN)
21 VIA CPU
22 USB 2.0 pin he der 1 (USB_1)
23 USB 2.0 pin he der 2 (USB_2)
24 PCI Express x4 slot
25 Front udio pin he der (F_AUDIO1)
26 SPDIF connector (SPDIF1)
27 SATA connector 1 (SATA1)
28 SATA connector 2 (SATA2)
29 SATA DOM power select jumper (J12)
30 Cle r CMOS jumper (J10)
31 CMOS b ttery slot (BAT1)
32 USB 3.0 connector (J8)
33 COM3 nd COM4 volt ge select jumper (J13)
34 COM1 nd COM2 volt ge select jumper (J11)
35 Extern l Therm l Resister pin he der (J7)
36 SPI1 pin he der
37 SPI Address select jumper (J6)
38 COM2 pin he der
T ble 1: L yout di gr m description t ble of the EPIA-M920 m inbo rd

EPIA-M920 User M nu l
7
1.4. Product Dimensions
Figure 2: Mounting holes nd dimensions of the EPIA-M920 m inbo rd
Unit: mm
Figure 3: Extern l I/O port dimensions of the EPIA-M920 m inbo rd

EPIA-M920 User M nu l
8
1.5. Height Distribution
Figure 4: Height distribution of the EPIA-M920 m inbo rd (for f n model)
Figure 5: Height distribution of the EPIA-M920 m inbo rd (for f nless model)
Note:
All other heights re under 21mm.

EPIA-M920 User M nu l
9
2. I/O Interf ce
The VIA EPIA-M920 h s wide selection of interf ces integr ted into the bo rd. It includes selection of
frequently used ports s p rt of the extern l I/O co stline.
2.1. Extern l I/O Ports
Figure 6: B ck p nel I/O ports
Item Description
1 PS/2 mouse port
2 HDMI1 port
3 HDMI2 port
4 COM1 port
5 Gig bit Ethernet ports
6 Line-in (3.5 mm TRS j ck)
7 Line-out (3.5 mm TRS j ck)
8 PS/2 keybo rd port
9 VGA port
10 USB 3.0 ports
11 USB 2.0 ports
12 Microphone 3.5 mm TRS j ck
T ble 2: L yout di gr m description t ble of the b ck p nel I/O ports