VIA Technologies EPIA-M910 User manual

1.02-06252012-100000
USER MANUAL
EPIA-M910
Mini-ITX embedded board

Tested To Comply
With FCC Standards
FOR HOME OR OFFICE USE
Copyright
Copyright © 2012 VIA Technologies Incorporated. All rights reserved.
No part o this document may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language,
in any orm or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise without the prior written
permission o VIA Technologies, Incorporated.
Trademarks
All trademarks are the property o their respective holders.
Disclaimer
No license is granted, implied or otherwise, under any patent or patent rights o VIA Technologies. VIA Technologies makes no
warranties, implied or otherwise, in regard to this document and to the products described in this document. The in ormation
provided in this document is believed to be accurate and reliable as o the publication date o this document. However, VIA
Technologies assumes no responsibility or the use or misuse o the in ormation in this document and or any patent in ringements
that may arise rom the use o this document. The in ormation and product speci ications within this document are subject to
change at any time, without notice and without obligation to noti y any person o such change.
VIA Technologies, Inc. reserves the right the make changes to the products described in this manual at any time without prior
notice.
Regulatory Compliance
FCC
FCCFCC
FCC-
--
-A Radio Frequency Interference Statement
A Radio Frequency Interference StatementA Radio Frequency Interference Statement
A Radio Frequency Interference Statement
This equipment has been tested and ound to comply with the limits or a class A digital device, pursuant to part 15 o the FCC
rules. These limits are designed to provide reasonable protection against harm ul inter erence when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate radio requency energy and, i not installed and used in
accordance with the instruction manual, may cause harm ul inter erence to radio communications. Operation o this equipment in a
residential area is likely to cause harm ul inter erence, in which case the user will be required to correct the inter erence at his
personal expense.
Notice 1
Notice 1Notice 1
Notice 1
The changes or modi ications not expressly approved by the party responsible or compliance could void the user's authority to
operate the equipment.
Notice 2
Notice 2Notice 2
Notice 2
Shielded inter ace cables and A.C. power cord, i any, must be used in order to comply with the emission limits.

Battery Recycling and Disposal
 Only use the appropriate battery specified for this product.
 Do not re-use, recharge, or reheat an old battery.
 Do not attempt to force open the battery.
 Do not discard used batteries with regular trash.
 Discard used batteries according to local regulations.
Safety Precautions
 Always read the safety instructions carefully.
 eep this User's Manual for future reference.
 All cautions and warnings on the equipment should be noted.
 eep this equipment away from humidity.
 Lay this equipment on a reliable flat surface before setting it up.
 Make sure the voltage of the power source and adjust properly 110/220V before connecting
the equipment to the power inlet.
 Place the power cord in such a way that people cannot step on it.
 Always unplug the power cord before inserting any add-on card or module.
 If any of the following situations arises, get the equipment checked by authorized service
personnel:
 The power cord or plug is damaged.
 Liquid has penetrated into the equipment.
 The equipment has been exposed to moisture.
 The equipment has not worked well or you cannot get it work according to User's Manual.
 The equipment has dropped and damaged.
 The equipment has obvious sign of breakage.
 Do not leave this equipment in an environment unconditioned or in a storage temperature
above 60°C (140°F). The equipment may be damaged.
 Do not leave this equipment in direct sunlight.
 Never pour any liquid into the opening. Liquid can cause damage or electrical shock.
 Do not place anything over the power cord.
 Do not cover the ventilation holes. The openings on the enclosure protect the equipment
from overheating

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Box Contents and Ordering Information
Model Number CPU Frequency Description
EPIA-M910-16 1.6GHz Nano™ X2 Standard kit
1 x SATA ca le
1 x I/O racket
EPIA-M910-16P 1.6GHz Nano™ X2 Standard kit
1 x SATA ca le
1 x SATA power ca le
1 x DC-in ca le
1 x I/O racket
EPIA-M910-10E 1.0GHz Eden™ X2 Standard kit
1 x SATA ca le
1 x I/O racket
EPIA-M910-10PE
1.0GHz Eden™ X2 Standard kit
1 x SATA ca le
1 x SATA power ca le
1 x DC-in ca le
1 x I/O racket
EPIA-M910-12Q 1.2GHz QuadCore Standard kit
1 x SATA ca le
1 x I/O racket
EPIA-M910-12PQ
1.2GHz QuadCore Standard kit
1 x SATA ca le
1 x SATA power ca le
1 x DC-in ca le
1 x I/O racket

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Table of Contents
1.
1.1.
1. Product Overview
Product OverviewProduct Overview
Product Overview................................
................................................................
................................................................
................................................................
................................................................
................................................................
................................ 1
11
1
1.1. Key Features and Benefits........................................................................... 2
1.1.1. VIA Nano
™
X2 / Eden
™
X2 Processor/VIA QuadCore ................... 2
1.1.2. VIA VX9 MSP Chipset........................................................................ 3
1.1.3. Modular Expansion Options................................................................. 3
1.2. Product Specifications................................................................................. 4
1.3. Layout Diagram ............................................................................................. 7
1.4. Product Dimensions..................................................................................... 9
1.5. Height Distribution..................................................................................... 11
2.
2.2.
2. I/O Interface
I/O InterfaceI/O Interface
I/O Interface................................
................................................................
................................................................
................................................................
................................................................
................................................................
........................................
................
........ 13
1313
13
2.1. External I/O Ports ....................................................................................... 13
2.1.1. PS/2 Port.................................................................................................. 14
2.1.2. VGA Port................................................................................................. 15
2.1.3. COM Port................................................................................................ 16
2.1.4. RJ45 LAN port: Gigabit Ethernet ....................................................... 17
2.1.5. Audio Ports............................................................................................. 18
2.1.6. HDMI Port ............................................................................................... 19
2.1.7. USB 2. Port ........................................................................................... 2
2.2. Onboard Connectors ................................................................................ 21
2.2.1. ATX Power Connector......................................................................... 21
2.2.2. LVDS panel connectors ....................................................................... 22
2.2.3. LVDS Inverter Connector .................................................................... 24
2.2.4. Digital I/O pin headers ........................................................................ 25
2.2.5. DC-in Power Connector ...................................................................... 26
2.2.6. SATA Power Connector ...................................................................... 27
2.2.7. CMOS Battery Slot................................................................................ 28
2.2.8. Front Panel Pin Header ........................................................................ 29
2.2.9. SMBus Pin Header................................................................................. 3
2.2.1 . CPU and System Fan Connectors ...................................................... 31

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2.2.11. SATA Connectors ................................................................................. 32
2.2.12. USB 2. Pin Headers............................................................................. 33
2.2.13. COM Pin Header for COM3~COM8 ................................................ 34
2.2.14. PS/2 Keyboard and Mouse Pin Header ............................................ 35
2.2.15. Front Audio Pin Header....................................................................... 36
2.2.16. SPDIF Connector ................................................................................... 37
2.2.17. SPI Pin Header ....................................................................................... 38
2.2.18. LPC Pin Header ...................................................................................... 39
3.
3.3.
3. Jumpers
JumpersJumpers
Jumpers ................................
................................................................
................................................................
................................................................
................................................................
................................................................
...............................................
..............................
............... 40
4040
40
3.1. Clear CMOS Jumper.................................................................................. 4
3.2. SATA DOM Power Select Jumper ......................................................... 42
3.3. COM1 and COM2 Voltage Select Jumper........................................... 43
3.4. COM3 and COM4 Voltage Select Jumper........................................... 44
3.5. COM5 and COM6 Voltage Select Jumper........................................... 45
3.6. COM7 and COM8 Voltage Select Jumper........................................... 46
3.7. LVDS Jumper Settings ............................................................................... 47
3.8. AT/ATX Mode Jumper (1-2: ATX/2-3:AT) ........................................... 48
3.9. JATX_on Mode Jumper ............................................................................ 49
4.
4.4.
4. Expansion S ots
Expansion S otsExpansion S ots
Expansion S ots ................................
................................................................
................................................................
................................................................
................................................................
................................................................
..................................
....
.. 51
5151
51
4.1. DDR3 Memory Slots .................................................................................. 51
4.1.1. Installing a Memory Module .............................................................. 52
4.1.2. Removing a Memory Module............................................................. 54
4.1.3. PCI Slot.................................................................................................... 55
4.1.4. PCI Express Slot .................................................................................... 56
5.
5.5.
5. Hardware Insta ation
Hardware Insta ationHardware Insta ation
Hardware Insta ation ................................
................................................................
................................................................
................................................................
........................................................
................................................
........................ 57
5757
57
5.1. Installing into a Chassis............................................................................. 57
5.1.1. Suggested minimum chassis dimensions ......................................... 57
5.1.2. Suggested minimum chassis height................................................... 58
5.1.3. Suggested keepout areas .................................................................... 59

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6.
6.6.
6. BIOS Setup Uti ity
BIOS Setup Uti ityBIOS Setup Uti ity
BIOS Setup Uti ity ................................
................................................................
................................................................
................................................................
..............................................................
............................................................
.............................. 61
6161
61
6.1. Entering the BIOS Setup Utility............................................................... 61
6.2. Control Keys................................................................................................ 61
6.3. Navigating the BIOS Menus ..................................................................... 62
6.4. Getting Help................................................................................................ 62
6.5. Main Menu ................................................................................................... 63
6.5.1. AMIBIOS.................................................................................................. 63
6.5.2. Processor................................................................................................. 63
6.5.3. System Memory ..................................................................................... 63
6.5.4. System Time ........................................................................................... 64
6.5.5. System Date............................................................................................ 64
6.6. Advanced Settings ..................................................................................... 65
6.6.1. CPU Configuration ................................................................................ 66
6.6.2. IDE Configuration .................................................................................. 67
6.6.3. SuperIO Configuration......................................................................... 68
6.6.4. Hardware Health Configuration ........................................................ 69
6.6.5. ACPI Settings.......................................................................................... 7
6.6.6. APM Settings .......................................................................................... 72
6.6.7. Spread Spectrum Configuration ........................................................ 76
6.6.8. USB Configuration................................................................................. 77
6.6.9. CRB Configuration................................................................................. 79
6.7. Boot Settings ............................................................................................... 8
6.7.1. Boot Settings Configuration................................................................ 81
6.8. Security Settings ......................................................................................... 83
6.8.1. Security Settings .................................................................................... 83
6.9. Advanced Chipset Settings ...................................................................... 85
6.9.1. North Bridge VIA VX9 Configuration........................................... 86
6.9.2. South Bridge VIA VX9 Configuration........................................... 9
6.1 . Exit Options................................................................................................. 91
6.1 .1. Save Changes and Exit ......................................................................... 91
6.1 .2. Discard Changes and Exit.................................................................... 91
6.1 .3. Discard Changes.................................................................................... 91
6.1 .4. Load Optimal Defaults ........................................................................ 92

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7.
7.7.
7. Driver Insta ation
Driver Insta ationDriver Insta ation
Driver Insta ation................................
................................................................
................................................................
................................................................
...............................................................
..............................................................
............................... 93
9393
93
7.1. Microsoft Driver Support.......................................................................... 93
7.2. Linux Driver Support.................................................................................. 93
Appendix A. Power Consumption Report
Appendix A. Power Consumption ReportAppendix A. Power Consumption Report
Appendix A. Power Consumption Report................................
................................................................
...............................................................
..............................................................
............................... 95
9595
95
A.1. EPIA-M91 -16 ..................................................................................................... 95
A.1.1. Playing DVD – Power DVD 5. ............................................................... 95
A.1.2. Playing MP3-Media Player ........................................................................ 96
A.1.3. Running Network Application ................................................................. 96
A.1.4. IDLE................................................................................................................ 97
A.1.5. RUN Burn-in Test ........................................................................................ 97
A.1.6. S3.................................................................................................................... 98
A.1.7. S3.................................................................................................................... 98
A.1.8. EuP/ErP Enable S3 ...................................................................................... 99
A.1.9. EuP/ErP Enable S5 ...................................................................................... 99
A.2. EPIA-M91 -16P .................................................................................................1
A.2.1. Playing DVD – Power DVD 5. .............................................................1
A.2.2. Playing MP3 – Media Player ...................................................................1
A.2.3. Running Network Application ...............................................................1 1
A.2.4. IDLE..............................................................................................................1 1
A.2.5. RUN Burn-in Test ......................................................................................1 1
A.2.6. S3..................................................................................................................1 2
A.2.7. S5..................................................................................................................1 2
A.2.8. EuP/ErP Enable S3 ....................................................................................1 2
A.2.9. EuP/ErP Enable S5 ....................................................................................1 3
A.3. EPIA-M91 -1 E .................................................................................................1 4
A.3.1. Playing DVD – Power DVD 5. .............................................................1 4
A.3.2. Playing MP3 – Media Player ...................................................................1 5
A.3.3. Running Network Application ...............................................................1 5
A.3.4. IDLE..............................................................................................................1 6
A.3.5. RUN Burn-in Test ......................................................................................1 6
A.3.6. S3..................................................................................................................1 7
A.3.7. S5..................................................................................................................1 7

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A.3.8. EuP/ErP Enable S3 ....................................................................................1 8
A.3.9. EuP/ErP Enable Power OFF.....................................................................1 8
A.4. EPIA-M91 -1 PE ...............................................................................................1 9
A.4.1. Playing DVD – Power DVD 5. .............................................................1 9
A.4.2. Playing MP3 – Media Player ...................................................................1 9
A.4.3. Running Network Application ...............................................................11
A.4.4. IDLE..............................................................................................................11
A.4.5. RUN Burn-in Test ......................................................................................11
A.4.6. S3..................................................................................................................111
A.4.7. S5..................................................................................................................111
A.4.8. EuP/ErP Enable S3 ....................................................................................111
A.4.9. EuP/ErP Enable S5 ....................................................................................112
A.5. EPIA-M91 -12PQ..............................................................................................113
A.5.1. Playing DVD – Power DVD 5. .............................................................113
A.5.2. Playing MP3 – Media Player ...................................................................113
A.5.3. Running Network Application ...............................................................114
A.5.4. IDLE..............................................................................................................114
A.5.5. RUN Burn-in Test ......................................................................................114
A.5.6. S3..................................................................................................................115
A.5.7. S5..................................................................................................................115
A.5.8. EuP/ErP Enable S3 ....................................................................................115
A.5.9. EuP/ErP Enable S5 ....................................................................................116
A.6. EPIA-M91 -12Q................................................................................................117
A.6.1. Playing DVD – Power DVD 5. .............................................................117
A.6.2. Playing MP3 – Media Player ...................................................................118
A.6.3. Running Network Application ...............................................................118
A.6.4. IDLE..............................................................................................................119
A.6.5. RUN Burn-in Test ......................................................................................119
A.6.6. S3..................................................................................................................12
A.6.7. S5..................................................................................................................12
A.6.8. EuP/ErP Enable S3 ....................................................................................121
A.6.9. EuP/ErP Enable S5 ....................................................................................121

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Lists of igures
Figure 1: Layout diagram of the EPIA-M91 mainboard (top view) ...................... 7
Figure 2: Mounting holes and dimensions of the EPIA-M91 mainboard............ 9
Figure 3: External I/O port dimensions of the EPIA-M91 mainboard ............... 1
Figure 4: Height distribution of the EPIA-M91 mainboard (for EPIA-M91 -16,
EPIA-M91 -16P, EPIA-M91 -12Q & EPIA-M91 -12PQ)......................................... 11
Figure 5: Height distribution of the EPIA-M91 mainboard (for EPIA-M91 -1 E
& EPIA-M91 -1 PE) ........................................................................................................ 12
Figure 6: External I/O ports........................................................................................... 13
Figure 7: PS/2 port pinout diagram ............................................................................. 14
Figure 8: VGA port pinout diagram............................................................................. 15
Figure 9: COM port pinout diagram............................................................................ 16
Figure 1 : Gigabit Ethernet port pinout diagram ..................................................... 17
Figure 11: Audio jack receptacle stack....................................................................... 18
Figure 12: HDMI port pinout diagram ........................................................................ 19
Figure 13: USB port pinout diagram............................................................................ 2
Figure 14: ATX power connector ................................................................................ 21
Figure 15: LVDS panel connector................................................................................ 22
Figure 16: LVDS Inverter connector ............................................................................ 24
Figure 17: Digital I/O pin headers ............................................................................... 25
Figure 18: DC-in power connector ............................................................................. 26
Figure 19: SATA power connector.............................................................................. 27
Figure 2 : CMOS battery slot ....................................................................................... 28
Figure 21: Front panel pin header ............................................................................... 29
Figure 22: SMBus pin header ........................................................................................ 3
Figure 23: CPU and System Fan connectors .............................................................. 31
Figure 24: SATA connectors ......................................................................................... 32
Figure 25: USB pin headers ........................................................................................... 33
Figure 26: COM pin headers......................................................................................... 34
Figure 27: PS/2 keyboard and mouse pin header .................................................... 35
Figure 28: Front audio pin header ............................................................................... 36
Figure 29: SPDIF connector ........................................................................................... 37

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Figure 3 : SPI pin header ............................................................................................... 38
Figure 31: LPC pin header.............................................................................................. 39
Figure 32: CLEAR CMOS jumper ................................................................................. 4
Figure 33: SATA DOM voltage select jumper.......................................................... 42
Figure 34: COM1 and COM2 voltage select jumper .............................................. 43
Figure 35: COM3 and COM4 voltage select jumper .............................................. 44
Figure 36: COM5 and COM6 voltage select jumper .............................................. 45
Figure 37: COM7 and COM8 voltage select jumper .............................................. 46
Figure 38: LVDS jumper settings .................................................................................. 47
Figure 39: AT/ATX mode jumper ................................................................................ 48
Figure 4 : JATX_on mode jumper............................................................................... 49
Figure 41: DDR3 memory slots .................................................................................... 51
Figure 42: Unlocking the memory DIMM slot........................................................... 52
Figure 43: Inserting the memory module................................................................... 52
Figure 44: Locking the memory module .................................................................... 53
Figure 45: Removing the memory module ................................................................ 54
Figure 46: PCI slot ........................................................................................................... 55
Figure 47: PCI Express slot ............................................................................................ 56
Figure 48: Suggested minimum chassis dimensions ................................................ 57
Figure 49: Suggested minimum internal chassis ceiling height............................. 58
Figure 5 : Suggested keepout areas ........................................................................... 59
Figure 51: Illustration of the Main menu screen....................................................... 63
Figure 52: Illustration of the Advanced Settings screen......................................... 65
Figure 53: Illustration of the CPU Configuration screen......................................... 66
Figure 54: Illustration of SATA Configuration screen ............................................. 67
Figure 55: Illustration of SuperIO Configuration screen......................................... 68
Figure 56: Illustration of Hardware Health Configuration screen ........................ 69
Figure 57: Illustration of ACPI Configuration screen............................................... 7
Figure 58: Illustration of APM Configuration screen ............................................... 72
Figure 59: Illustration of Spread Spectrum Configuration screen ........................ 76
Figure 6 : Illustration of USB Configuration screen ................................................ 77
Figure 61: Illustration of CRB Configuration screen................................................. 79
Figure 62: Illustration of Boot Settings screen.......................................................... 8

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Figure 63: Illustration of Boot Settings Configuration............................................. 81
Figure 64: Illustration of Security Settings screen.................................................... 83
Figure 65: Illustration of Advanced Chipset Settings screen................................. 85
Figure 66: Illustration of North Bridge VIA VX9 Configuration screen .......... 86
Figure 67: Illustration of DRAM Frequency/Timing Configuration screen .......... 87
Figure 68: Illustration of OnChip VGA Configuration screen ............................... 88
Figure 69: Illustration of South Bridge VIA VX9 Configuration screen .......... 9
Figure 7 : Illustration of Exit Options screen ........................................................... 91

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Lists of Tables
Table 1: PS/2 port pinout .............................................................................................. 14
Table 2: VGA port pinout ............................................................................................. 15
Table 3: COM port pinout ............................................................................................ 16
Table 4: Gigabit Ethernet port pinout ........................................................................ 17
Table 5: Gigabit Ethernet LED color definition........................................................ 17
Table 6: Audio jack receptacle pinout....................................................................... 18
Table 7: HDMI port pinout ........................................................................................... 19
Table 8: USB port pinout............................................................................................... 2
Table 9: ATX power connector pinout...................................................................... 21
Table 1 : LVDS1 panel pinout..................................................................................... 23
Table 11: LVDS2 panel pinout..................................................................................... 23
Table 12: LVDS Inverter connector pinout................................................................ 24
Table 13: Digital I/O pin headers pinout................................................................... 25
Table 14: DC-in power connector pinout................................................................. 26
Table 15: SATA power connector pinout................................................................. 27
Table 16: CMOS battery slot pinout .......................................................................... 28
Table 17: Front panel pin header pinout................................................................... 29
Table 18: SMBus pin header pinout............................................................................ 3
Table 19: CPU and System Fan connector pinouts ................................................. 31
Table 2 : SATA connector pinouts............................................................................. 32
Table 21: USB pin header pinouts............................................................................... 33
Table 22: COM pin header pinout.............................................................................. 34
Table 23: PS/2 keyboard and mouse pin header pinout........................................ 35
Table 24: Front audio pin header pinout................................................................... 36
Table 25: SPDIF connector pinout .............................................................................. 37
Table 26: SPI pin header pinout .................................................................................. 38
Table 27: LPC pin header pinout................................................................................. 39
Table 28: CLEAR CMOS jumper settings................................................................... 4
Table 29: SATA DOM voltage select jumper settings ........................................... 42
Table 3 : COM1 and COM2 voltage select jumper settings ............................... 43
Table 31: COM3 and COM4 voltage select jumper settings ............................... 44

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Table 32: COM5 and COM6 voltage select jumper settings ............................... 45
Table 33: COM7 and COM8 voltage select jumper settings ............................... 46
Table 34: LVDS jumper settings................................................................................... 47
Table 35: AT/ATX mode jumper ................................................................................. 48
Table 36: JATX_on mode jumper ............................................................................... 49
Table 37: Serial port addresses and IRQs ................................................................. 68

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1.
1.1.
1. Product Overview
Product OverviewProduct Overview
Product Overview
The VIA EPIA-M91 Mini-ITX mainboard is a high performance native x86
mainboard designed mainly for embedded, POS, Kiosk, ATM and digital media
application. It can also be used for various domain applications such as
desktop PC, industrial PC, etc. The mainboard is based on the VIA VX9 MSP
(Media System Processor) chipset that features the VIA Chrome9
™
HD DX9
with 2D/3D graphics and video accelerators for rich digital media performance.
The VIA EPIA-M91 includes a powerful, secure, and efficient VIA Nano
™
X2 /
Eden
™
X2 / VIA QuadCore processor. The VIA Nano
™
X2 / Eden
™
X2
processor includes the VIA Padlock Security Engine, VIA CoolStream
™
Architecture, VIA StepAhead
™
Technology Suite, and VIA TwinTurbo
™
technology.
The VIA EPIA-M91 has two 1 66 MHz DDR3 DIMM slots that support up to 8
GB memory size. The VIA EPIA-M91 provides support for high fidelity audio
with its included VIA VT2 21 High Definition Audio Codec. In addition it
supports two SATA 3Gb/s storage devices.
The VIA EPIA-M91 is compatible with a full range of Mini-ITX chassis as well
as FlexATX and MicroATX enclosures and power supplies. The VIA EPIA-
M91 is fully compatible with Microsoft
®
and Linux operating systems.

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1.1. Key Features and Benefits
1.1.1. VIA Nano
™
X2 / Eden
™
X2 Processor/VIA
QuadCore
The VIA Nano
TM
X2 / Eden
TM
X2 is a dual-core processor and 64-bit
superscalar x86 processor based on a 4 nanometer process technology.
Packed into an ultra compact NanoBGA2 package (measuring 21mm x 21mm),
it delivers an energy-efficient yet powerful performance with cool and quiet
operation.
VIA Nano
TM
X2 processors are line-up aimed at superb multimedia
performance and the VIA Eden
TM
X2 processors are designed for fanless
implementation. Both are providing an excellent performance on multitasking
applications that makes it perfect for embedded system applications such as
industrial PCs, test machines, measuring equipment, digital signage, medical
PCs, monitoring systems, gaming machines, in-vehicle entertainment, etc.
VIA QuadCore processors combine four 64-bit 'Isaiah' cores on two dies,
offering enhanced multi-tasking and superb multimedia performance on a low
power budget.
Featuring super scalar, out-of-order architecture, VIA QuadCore is
manufactured using advanced 4 nano-meter CMOS technology. The
distributed performance of the VIA QuadCore provides a highly compatible,
high-performance, and low-power consumption solution for any computing
market.

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1.1.2. VIA VX900 MSP Ch pset
The VIA VX9 media system processor is designed to enable high quality
digital video streaming and DVD playback. The VIA VX9 features VIA
Chrome9
™
HD DX9 with 2D/3D graphics and video accelerators, DDR3 1 66
MHz support, motion compensation and dual display support to ensure a rich
overall entertainment experience.
Note:
Note:Note:
Note:
For Windows 7 users only:
I encounter the issue such as the operating system recognize the VIA Dual-Core CPU as two
processors instead o one processor with two cores. Download and install the hot ix released by
Microso t to address this issue. The downloadable hot ix is available at
http://support.microso t.com/kb/2502664.
1.1.3. Modular Expans on Opt ons
The VIA EPIA-M91 ensures long-term usability with its support for industry
standard expansion options. Its support for legacy PCI expansion cards helps
to smooth and reduce the costs of transitioning to newer expansion
technologies. The VIA EPIA-M91 enable companies to slowly roll out
upgrades as necessary instead of having to replace everything all at once. This
ensures that companies using the EPIA-M91 obtain the maximum benefits
from its past investments in PCI expansion cards.
The VIA EPIA-M91 also includes a 1-Lane PCI Express 2. expansion slot that
provides protection against obsolescence.
The VIA EPIA-M91 further proves its versatility with its included Mini PCI
Express slot. Companies can feel free to design low-profile systems based on
the versatile EPIA-M91 .

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1.2. Product Specifications
 Processor
ProcessorProcessor
Processor
 VIA Nano™ X2 1.6GHz with heatsink and fan
 VIA Eden™ X2 1.0GHz with heatsink
 VIA QuadCore 1.2GHz with heatsink and fan
 Chipset
ChipsetChipset
Chipset
 VIA VX900 Media System Processor
 System Memory
System MemorySystem Memory
System Memory
 2 x DDR3 1066 DIMM
 Supports up to 8 GB memory size
Note:
Note:Note:
Note:
The real memory size may show less than 8GB due to some capacity are used or BIOS or other
unctions.
 VGA
VGAVGA
VGA
 Integrated VIA UniChrome9™ HD DX9 3D/2D graphics with MPEG2, WMV9/VC1
 H.264 decoding acceleration
 Onboard
Onboard Onboard
Onboard Peripherals
PeripheralsPeripherals
Peripherals
 Serial ATA
Serial ATASerial ATA
Serial ATA
 2 SATA connectors
 2 x SATA 3.5” HDD Auxiliary Power (for DC-in S U only)
 Onboard LAN
Onboard LANOnboard LAN
Onboard LAN
 2 x VIA VT6130 PCIe Gigabit Ethernet Controllers
 Onboard Audio
Onboard AudioOnboard Audio
Onboard Audio
 VIA VT2021 High Definition Audio Codec
 Onboard Super I
Onboard Super IOnboard Super I
Onboard Super I/
//
/O
OO
O
 Fintek 81865F-I + F81801
 Onboard I/O Connectors
Onboard I/O ConnectorsOnboard I/O Connectors
Onboard I/O Connectors
 2 x USB 2.0 pin headers for 4 ports
 2 x SATA connectors
 2 x SATA Power connectors (DC-in S U)
 2 x SATA DOM Power selectors
 1 x Dual channel 18/24-bit LVDS (VT1636)
 1 x Single channel 18/24-bit LVDS (VX900)

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 1 x Front audio pin header
 1 x PS/2 keyboard/mouse pin header
 6 x RS232 pin headers (powered with selectable 5V/12V)
 1 x LPC pin header
 1 x SMBus pin header
 1 x S/PDIF Out connector
 2 x Digital I/O pin headers (GPI x 8, GPO x 8)
 1 x Front panel pin header
 2 x Smart Fan pin headers for CPU and System
 1 x ATX or DC-in power connector
 1 x PCI slot + 1 PCIe x 1 slot
 ack Panel I/O
ack Panel I/Oack Panel I/O
ack Panel I/O
 2 x Serial COM ports (powered with selectable 5V/12V)
 1 x VGA port
 1 x HDMI port
 2 x GigaLAN ports
 4 x USB2.0 ports
 3 x Audio jacks: Line-in, Line-out and MIC-in
 2 x PS/2 B/MS ports
 I/O racket
I/O racketI/O racket
I/O racket
 Standard
 IOS
IOSIOS
IOS
 AMI BIOS
 8 Mbit SPI flash memory
 Operating System
Operating SystemOperating System
Operating System
 Windows 7
 Windows Embedded Standard 7
 Windows Embedded POSReady 7
 Windows XP
 Windows Embedded Standard/Compact
 Linux
 VxWorks
 Power
PowerPower
Power
 ATX Power or 12V DC-in

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 System Monitoring & Management
System Monitoring & ManagementSystem Monitoring & Management
System Monitoring & Management
 Wake-on-LAN
 eyboard Power-on
 Timer Power-on
 System power management
 AC power failure recovery
 Watch Dog Timer
 Operating Conditions
Operating ConditionsOperating Conditions
Operating Conditions
 Ope
OpeOpe
Operating Temperature
rating Temperaturerating Temperature
rating Temperature
 0°C up to 60°C
 Operating Humidity
Operating HumidityOperating Humidity
Operating Humidity
 0% ~ 95% (relative humidity; non-condensing)
 Form Factor
Form FactorForm Factor
Form Factor
 Mini-ITX
 17 cm x 17 cm
 Compliance
ComplianceCompliance
Compliance
 CE
 FCC
 BSMI
 RoHS