VIA Technologies EPIA-EN12000EG - VIA Motherboard - Mini ITX User manual

User’s Manual
EPIA-EN
Version 1.23
January 18, 2012

Copyright
Copyright © 2010-2012 VIA Technologies Incorporated. All rights reserved.
No part of this document may be reproduced, transmitted, transcribed, stored in a retrieval
system, or translated into any language, in any form or by any means, electronic, mechanical,
magnetic, optical, chemical, manual or otherwise without the prior written permission of VIA
Technologies, Incorporated.
Trademarks
All trademarks are the property of their respective holders. PS/2 is a registered trademark of
IBM Corporation. Award BIOS is a registered trademark of Phoenix Technologies Ltd.
FCC-B Radio Frequency Interference Statement
This equipment has been tested and found to comply with the limits for a class B digital device,
pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference
to radio communications. Operation of this equipment in a residential area is likely to cause
harmful interference, in which case the user will be required to correct the interference at his
personal expense.
Notice 1
The changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
Notice 2
Shielded interface cables and A.C. power cord, if any, must be used in order to comply with
the emission limits.
Tested To Comply
With FCC Standards
FOR HOME OR OFFICE USE

Safety Instructions
1. Always read the safety instructions carefully.
2. Keep this User's Manual for future reference.
3. Keep this equipment away from humidity.
4. Lay this equipment on a reliable flat surface before setting it up.
5. The openings on the enclosure are for air convection hence protects the equipment from
overheating. DO NOT COVER THE OPENINGS.
6. Make sure the voltage of the power source and adjust properly 110/220V before
connecting the equipment to the power inlet.
7. Place the power cord in such a way that people cannot step on it. Do not place anything
over the power cord.
8. Always unplug the power cord before inserting any add-on card or module.
9. All cautions and warnings on the equipment should be noted.
10. Never pour any liquid into the opening. Liquid can cause damage or electrical shock.
11. If any of the following situations arises, get the equipment checked by a 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 work well or you cannot get it work according to User's
Manual.
•The equipment has dropped and damaged
•If the equipment has obvious sign of breakage
12. DO NOT LEAVE THIS EQUIPMENT IN AN ENVIRONMENT UNCONDITIONED,
STORAGE TEMPERATURE ABOVE 60 C (140F), IT MAY DAMAGE THE
EQUIPMENT.
Caution:
Only use the appropriate battery specified for this product.
Do not reuse, 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.

i
B OX C ONTENTS
One VIA Mini-ITX mainboard
One Quic Installation Guide
One ATA-133/100 IDE ribbon cable
One driver and utilities CD
One IO brac et

ii
T ABLE OF C ONTENTS
Box Contents............................................................................ i
Table of Contents .................................................................... ii
Chapter 1 ............................................................................... 1
Specifications ....................................................................... 1
Mainboard Specifications ....................................................... 2
Mainboard Layout ................................................................. 5
Bac Panel Layout................................................................. 6
Bac Panel Ports ................................................................... 7
Slots.................................................................................... 7
Onboard Connectors.............................................................. 8
Onboard Jumpers.................................................................. 8
Chapter 2 ............................................................................... 9
Installation........................................................................... 9
CPU ................................................................................... 10
Memory Module Installation ................................................. 12
Connecting the Power Supply ............................................... 13
Bac Panel Ports ................................................................. 14
Connectors......................................................................... 17
Jumpers ............................................................................. 25
Slots.................................................................................. 27
Chapter 3 ............................................................................. 29
BIOS Setup ........................................................................ 29
Entering Setup ................................................................... 30
Control Keys....................................................................... 31
Navigating the BIOS Menus .................................................. 32
Getting Help ....................................................................... 33
Main Menu ......................................................................... 34
Standard CMOS Features ..................................................... 36
IDE Drives ......................................................................... 37
Advanced BIOS Features...................................................... 38
CPU Feature ....................................................................... 41
Hard Dis Boot Priority ........................................................ 44
Advanced Chipset Features .................................................. 45
AGP & P2P Bridge Control .................................................... 48

iii
CPU & PCI Bus Control ........................................................ 50
TV Output Connector........................................................... 51
Integrated Peripherals ......................................................... 52
Super IO Device ................................................................. 54
Power Management Setup.................................................... 55
Peripheral Activities ............................................................ 57
IRQs Activities .................................................................... 60
PNP/PCI Configurations ....................................................... 61
IRQ Resources .................................................................... 63
PC Health Status ................................................................. 64
Frequency / Voltage Control ................................................. 65
Load Fail-Safe Defaults........................................................ 69
Load Optimized Defaults ...................................................... 70
Set Supervisor / User Password ............................................ 71
Save & Exit Setup ............................................................... 73
Exit Without Saving............................................................. 74
Chapter 4 ............................................................................. 75
Driver Installation ............................................................... 75
Driver Utilities .................................................................... 76
CD Content ........................................................................ 78

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1
C
HAPTER
1
Specifications
The ultra-compact and highly integrated VIA EPIA-EN uses the
Mini-ITX mainboard form-factor developed by VIA Technologies,
Inc. as part of the company’s open industry-wide total
connectivity initiative. The mainboard enables the creation of an
exciting new generation of small, ergonomic, innovative and
affordable embedded systems. Through a high level of
integration, the Mini-ITX occupy 66% of the size of FlexATX
mainboard form factor. The mainboard comes with an embedded
VIA Processor, boasting of ultra-low power consumption, cool and
quite operation.

Chapter 1
2
M AINBOARD S PECIFICATIONS
CPU
•VIA C7 V4 Bus / Eden V4 Bus NanoBGA2 Processor
Chipset
•VIA CN700 North Bridge
•VIA VT8237R-series South Bridge
Graphics
•Integrated UniChrome™ Pro AGP with MPEG-2 Acceleration
Audio
•VIA VT1618 8-channel AC'97 Codec
Memor
•1 x DDR2 533/400 DIMM slot (up to 1 GB)
Expansion Slot
•1 x PCI slot
IDE
•2 x UltraDMA 133/100 connectors
LAN
•VIA VT1622 1000/100/10 Base-T Ethernet PHY
IEEE 1394
•VIA VT6307S IEEE 1394 Fire Wire
TV-Out
•VIA VT1625 HDTV Encoder

Specifications
3
Back Panel I/O Ports
•1 x PS/2 mouse port and 1 x PS/2 eyboard port
•1 x RJ-45 LAN port
•1 x Serial port
•1 x VGA port
•4 x USB 2.0 ports
•1 x RCA port (SPDIF or TV out)
•1 x S-Video port
•3 x Audio Jac s: line-out, line-in and mic-in (Horizontal, Smart
5.1 Support)
Onboard I/O Connectors
•1 x USB pin header for 2 additional USB 2.0 ports
•1 x IEEE 1394 pin header
•1 x SIR pin header (IRDA 1.0)
•1 x Serial port pin header for COM2
•1 x Front Panel audio pin header (Mic-in and Line-out)
•2 x S/PDIF connectors (S/PDIF-in and S/PDIF-out)
•1 x Component (YPbPr) video pin header
•2 x Serial ATA connectors
•1 x SM Bus pin header
•1 x KBMS pin header (KB/MS or CIR)
•1 x LPC pin header
•2 x Fan connectors (CPU Fan and System Fan)
•1 x LVDS/TTL/DVI (an add-on card is required)
•1 x Front-Panel pin header
•1 x WP pin header

Chapter 1
4
BIOS
•Award BIOS with 4/8Mbit flash memory capacity
•ACPI2.0, SMBIOS2.1 and DMI2.2
Form Factor
•Mini-ITX (6 layers)
•17 cm X 17 cm
Note:
Due to the hardware limitation, DDR2 SDRAM chips organized as
128Mb x 8 bank cannot be supported by EPIA products with CN700
and CX700M chipsets.

Specifications
5
M AINBOARD L AYOUT

Chapter 1
6
B ACK P ANEL L AYOUT
PS/2 Mouse
PS/2 Keyboard
RCA/SPDIF
Line-InLine-Out MicrophoneS-VideoUSBUSB
RJ45 LAN
VGA Out
COM1

Specifications
7
B ACK P ANEL P ORTS
Port Description Page
Audio Jac s 3 Audio ports (line-out, line-in and mic-in) 13-15
COM1 Serial port 1 13
PS/2 Mouse PS/2 mouse port 13
PS/2 Keyboard PS/2 eyboard port 13
RCA/SPDIF RCA port (SPDIF or TV out) 13-14
RJ45 RJ45 port 13-14
USB USB 2.0 ports 13-14
VGA VGA port 13
S-Video S-Video port 13-14
S LOTS
Port Description Page
DDR DIMM Memory module slot 11
PCI Expansion card slot 26

Chapter 1
8
O NBOARD C ONNECTORS
Connector Description Page
1394 IEEE 1394 connector 19
ATXPWR Power cable connector 12
COM 2 COM port 2 connector 20
CPUFAN CPU fan connector 10
SIR Fast Infrared Radiation connector 19
F_AUDIO Front Audio connector 20
F_PANEL Front panel connector 17
IDE 1-2 IDE drive connectors 16
KBMS Keyboard and Mouse connector 22
LPC/SIR LPC/SIR connector 23
LVDS/TTL/DVI LVDS/TTL/DVI connector 21-22
SATA 1-2 Serial ATA 1 and 2 connectors 18
SPDIF 1-2 SPDIF In/Out connectors 18
SMBus SMBus connector 18
SYSFAN System fan connector 10
USB 5-6 Universal Serial Bus 2.0 connectors 3-4 19
TV TV output connector 22
O NBOARD J UMPERS
Jumper Description Page
CLEAR_CMOS Reset CMOS settings 24
PANEL IDE selector 25
SPDIF_SEL S/PDIF selector 24
WP BIOS write protection setting 25

9
C
HAPTER
2
Installation
This chapter provides you with information about hardware
installation procedures. It is recommended to use a grounded wrist
strap before handling computer components. Electrostatic discharge
(ESD) can damage some components.

Chapter 2
10
CPU
The VIA EPIA-EN Mini-ITX mainboard includes an embedded VIA C7 or Eden
V4 Bus Processor. The VIA Eden V4 Bus Processor provides ultra-low power
consumption and advanced thermal dissipation properties and features a
fanless design. The VIA C7 or Eden V4 Bus Processor requires only a
heatsin to provide sufficient cooling.

Installation
11
CPU Fan and System Fan: CPUFAN and SYSFAN
The CPUFAN (CPU fan) and SYSFAN (system fan) run on +12V and maintain
system cooling. When connecting the wire to the connectors, always be
aware that the red wire is the Positive and should be connected to the +12V.
The blac wire is Ground and should always be connected to GND.
FAN_MCM is a switch that is used by high-quality fans to monitor the system
temperature and will automatically adjust according to the environment.
CPUFAN
Pin Signal
1 FAN_MCM
2 +12V
3 GND
SYSFAN
Pin Signal
1 FAN_MCM
2 +12V
3 GND
1
SYSFAN
1
CPUFAN

Chapter 2
12
M EMORY M ODULE I NSTALLATION
The VIA EPIA-EN Mini-ITX mainboard provides one 240-pin DIMM slot for
DDR2 533/400 SDRAM memory modules and supports the memory size up to
1GB.
DDR SDRAM Module Installation Procedures
•Locate the DIMM slot in the motherboard.
•Unloc a DIMM slot by pressing the retaining clips outward.
•Align a DIMM on the soc et such that the notch on the DIMM
matches the brea on the slot.
•Firmly insert the DIMM into the slot until the retaining clips snap
bac in place and the DIMM is properly seated.
Available DDR SDRAM Configurations
Refer to the table below for available DDR SDRAM configurations on the
mainboard.
Slot Module Size Total
DIMM 64MB, 128MB, 256MB, 512MB, 1GB 64MB-1GB
Maximum supported system memory 64MB-1GB
DIMM