Asus AT3N7A-I - Motherboard - Mini ITX User manual

Motherboard
AT3N7A-I

ii
E4877
First Edition V1
August 2009
Copyright © 2009 ASUSTeK Computer Inc. All Rights Reserved.
No part of this manual, including the products and software described in it, may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any
means, except documentation kept by the purchaser for backup purposes, without the express written
permission of ASUSTeK Computer Inc. (“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired, modied or altered, unless
such repair, modication of alteration is authorized in writing by ASUS; or (2) the serial number of the
product is defaced or missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS
DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS,
LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE),
EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY
DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR
INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE,
AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO
RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS
MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
Products and corporate names appearing in this manual may or may not be registered trademarks or
copyrights of their respective companies, and are used only for identication or explanation and to the
owners’ benet, without intent to infringe.

iii
Contents
Notices.......................................................................................................... v
Safety information ...................................................................................... vi
About this guide ........................................................................................ vii
AT3N7A-I specications summary.......................................................... viii
Chapter 1: Product introduction
1.1 Before you proceed ..................................................................... 1-1
1.2 Motherboard overview................................................................. 1-2
1.2.1 Motherboard layout ......................................................... 1-2
1.2.2 Layout contents............................................................... 1-2
1.3 Central Processing Unit (CPU) ................................................... 1-3
1.4 System memory ........................................................................... 1-3
1.4.1 Overview ......................................................................... 1-3
1.4.2 Memory congurations.................................................... 1-4
1.5 Expansion slot.............................................................................. 1-7
1.5.1 Installing an expansion card ........................................... 1-7
1.5.2 Conguring an expansion card ....................................... 1-7
1.5.3 PCI slot ........................................................................... 1-7
1.6 Jumpers ........................................................................................ 1-8
1.7 Connectors ................................................................................... 1-9
1.7.1 Rear panel connectors.................................................... 1-9
1.7.2 Internal connectors ........................................................1-11
1.8 Software support........................................................................ 1-16
1.8.1 Installing an operating system ...................................... 1-16
1.8.2 Support DVD information .............................................. 1-16
Chapter 2: BIOS information
2.1 Managing and updating your BIOS ............................................ 2-1
2.1.1 ASUS Update utility ........................................................ 2-1
2.1.2 ASUS EZ Flash 2............................................................ 2-2
2.1.3 ASUS CrashFree BIOS................................................... 2-3
2.2 BIOS setup program .................................................................... 2-4
2.3 Main menu .................................................................................... 2-4
2.3.1 System Time ................................................................... 2-5
2.3.2 System Date ................................................................... 2-5
2.3.3 SATA 1~3, ESATA ........................................................... 2-5

iv
Contents
2.3.4 Storage Conguration ..................................................... 2-6
2.3.5 System Information ......................................................... 2-6
2.4 Advanced menu ........................................................................... 2-6
2.4.1 CPU Conguration .......................................................... 2-7
2.4.2 JumperFree Conguration .............................................. 2-7
2.4.3 Chipset............................................................................ 2-8
2.4.4 Onboard Devices Conguration...................................... 2-9
2.4.5 USB Conguration .......................................................... 2-9
2.4.6 PCI PnP ........................................................................ 2-10
2.5 Power menu................................................................................ 2-10
2.5.1 Suspend Mode.............................................................. 2-10
2.5.2 ACPI 2.0 Support ...........................................................2-11
2.5.3 ACPI APIC Support........................................................2-11
2.5.4 APM Conguration.........................................................2-11
2.5.5 Hardware Monitor ..........................................................2-11
2.6 Boot menu .................................................................................. 2-12
2.6.1 Boot Device Priority ...................................................... 2-12
2.6.2 Boot Settings Conguration .......................................... 2-12
2.6.3 Security ......................................................................... 2-13
2.7 Tools menu ................................................................................. 2-14
2.7.1 ASUS EZ Flash 2.......................................................... 2-14
2.7.2 Express Gate ................................................................ 2-15
2.7.3 AI NET 2........................................................................ 2-15
2.8 Exit menu.................................................................................... 2-15

v
Notices
Federal Communications Commission Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
• This device may not cause harmful interference, and
• This device must accept any interference received including interference that may cause
undesired operation.
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 in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with manufacturer’s instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment to an outlet on a circuit different from that to which the receiver is
connected.
• Consult the dealer or an experienced radio/TV technician for help.
Canadian Department of Communications Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions from
digital apparatus set out in the Radio Interference Regulations of the Canadian Department
of Communications.
This class B digital apparatus complies with Canadian ICES-003.
REACH
Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of
Chemicals) regulatory framework, we published the chemical substances in our products at
ASUS REACH website at http://green.asus.com/english/REACH.htm.
The use of shielded cables for connection of the monitor to the graphics card is required
to assure compliance with FCC regulations. Changes or modications to this unit not
expressly approved by the party responsible for compliance could void the user’s authority
to operate this equipment.
DO NOT throw the motherboard in municipal waste. This product has been designed to
enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin
indicates that the product (electrical and electronic equipment) should not be placed in
municipal waste. Check local regulations for disposal of electronic products.
DO NOT throw the mercury-containing button cell battery in municipal waste. This symbol
of the crossed out wheeled bin indicates that the battery should not be placed in municipal
waste.

vi
Safety information
Electrical safety
• To prevent electric shock hazard, disconnect the power cable from the electric outlet
before relocating the system.
• When adding or removing devices to or from the system, ensure that the power cables
for the devices are unplugged before the signal cables are connected. If possible,
disconnect all power cables from the existing system before you add a device.
• Before connecting or removing signal cables from the motherboard, ensure that all
power cables are unplugged.
• Seek professional assistance before using an adapter or extension cord. These devices
could interrupt the grounding circuit.
• Ensure that your power supply is set to the correct voltage in your area. If you are not
sure about the voltage of the electrical outlet you are using, contact your local power
company.
• If the power supply is broken, do not try to x it by yourself. Contact a qualied service
technician or your retailer.
• The optical S/PDIF is an optional component (may or may not be included in your
motherboard) and is dened as a CLASS 1 LASER PRODUCT.
Operation safety
• Before installing the motherboard and adding devices on it, carefully read all the manuals
that came with the package.
• Before using the product, ensure that all cables are correctly connected and the power
cables are not damaged. If you detect any damage, contact your dealer immediately.
• To avoid short circuits, keep paper clips, screws, and staples away from connectors,
slots, sockets and circuitry.
• Avoid dust, humidity, and temperature extremes. Do not place the product in any area
where it may become wet.
This motherboard should only be used in environments with ambient temperatures between
5°C (41°F) and 40°C (104°F).
• Place the product on a stable surface.
• If you encounter technical problems with the product, contact a qualied service
technician or your retailer.
INVISIBLE LASER RADIATION, AVOID EXPOSURE TO BEAM.
• Never dispose of the battery in re. It could explode and release harmful substances into
the environment.
• Never dispose of the battery with your regular household waste. Take it to a hazardous
material collection point.
• Never replace the battery with an incorrect battery type.
• RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE.
• DISPOSE OF USED BATTERIES ACCORDING TO THE ABOVE BATTERY-RELATED
INSTRUCTIONS.

vii
Conventions used in this guide
To ensure that you perform certain tasks properly, take note of the following symbols used
throughout this manual.
DANGER/WARNING: Information to prevent injury to yourself when trying to
complete a task.
CAUTION: Information to prevent damage to the components when trying to
complete a task.
NOTE: Tips and additional information to help you complete a task.
IMPORTANT: Instructions that you MUST follow to complete a task.
Where to nd more information
Refer to the following sources for additional information and for product and software
updates.
1. ASUS websites
The ASUS website provides updated information on ASUS hardware and software
products. Refer to the ASUS contact information.
2. Optional documentation
Your product package may include optional documentation, such as warranty yers,
that may have been added by your dealer. These documents are not part of the
standard package.
Typography
Bold text Indicates a menu or an item to select.
Italics Used to emphasize a word or a phrase.
<Key> Keys enclosed in the less-than and greater-than sign means
that you must press the enclosed key.
Example: <Enter> means that you must press the Enter or
Return key.
<Key1>+<Key2>+<Key3> If you must press two or more keys simultaneously, the key
names are linked with a plus sign (+).
Example: <Ctrl>+<Alt>+<D>
About this guide
This user guide contains the information you need when installing and conguring the
motherboard.
How this guide is organized
This guide contains the following parts:
• Chapter 1: Product introduction
This chapter describes the features of the motherboard and the new technology it
supports.
• Chapter 2: BIOS information
This chapter tells how to change system settings through the BIOS Setup menus.
Detailed descriptions of the BIOS parameters are also provided.

viii
AT3N7A-I specications summary
(continued on the next page)
CPU Integrated Dual-Core Intel®Atom™ 330 processor
Chipset NVIDIA®ION™
Front Side Bus 533 MHz
Memory Dual channel memory architecture
- 2 x 240-pin DIMM sockets support maximum 4GB
unbuffered non-ECC 800/667 MHz DDR2 memory
modules
* Refer to www.asus.com or this user manual for the
Memory QVL (Qualied Vendors Lists).
** When you install a total memory of 4GB capacity
or more, Windows®32-bit operating system may only
recognize less than 3GB. We recommend a maximum
of 3GB system memory if you are using a Windows®
32-bit operating system.
Graphics Integrated NVIDIA®GeForce Series DirectX10 graphics
processor
Supports CUDA technology
Supports PhysX technology
Supports RGB with max. resolution up to 1920 x 1440 x
32 Bpp @75Hz
Supports HDMI with max. resolution up to 1920 x 1200 x
32 Bpp @60Hz
Dual VGA output supports:
RGB&HDMI
* The minimum system requirements of playing HD-DVD
and Blu-ray disc: Graphics shared memory of 256MB /
1GB dual-channel DDR2 667 or single-channel DDR2
800.
Expansion slot 1 x PCI slot
Storage 3 x Serial ATA 3Gb/s ports
Audio VIA® VT1708S High Denition Audio 8-channel CODEC
LAN Realtek®RTL8112L PCIe Gigabit LAN controller
USB Supports up to 10 USB 2.0/1.1 ports (2 ports at mid-board,
8 ports at back panel)
Fan Rated Speed: 6000 ± 15% RPM
ASUS special features ASUS CrashFree BIOS 3
ASUS EZ Flash 2
ASUS MyLogo 2™
ASUS AI NET 2
ASUS Express Gate

ix
AT3N7A-I specications summary
*Specications are subject to change without notice.
Rear panel ports 1 x PS/2 Keyboard port
1 x Bluetooth adapter
1 x eSATA port
2 x S/PDIF out ports (Optical & Coaxial)
1 x VGA port
1 x HDMI port
1 x LAN (RJ-45) port
8 x USB 2.0/1.1 ports
8-channel audio I/O ports
Internal connectors 1 x USB 2.0/1.1 connector supports additional 2 USB 2.0/1.1
ports
1 x CPU fan connector
1 x Chassis fan connector
1 x Power fan connector
1 x Chassis intrusion connector
3 x Serial ATA connectors
1 x System panel connector
1 x High denition front panel audio connector
1 x 24-pin EATX power connector
1 x 4-pin ATX 12V power connector
BIOS features 8 Mb Flash ROM, AMI BIOS, PnP, DMI2.0, WfM2.0,
SMBIOS 2.5, ACPI v2.0a
Accessories 2 x Serial ATA cables
1 x I/O shield
1 x User Manual
Support DVD contents Drivers
ASUS PC Probe II
ASUS Update
Anti-virus software (OEM version)
Form Factor Mini ITX form factor: 6.75 in x 6.75 in (17.1cm x 17.1cm)

ASUS AT3N7A-I 1-1
Chapter 1
Product introduction
If any of the items is damaged or missing, contact your retailer.
Thank you for buying an ASUS®AT3N7A-I motherboard!
Before you start installing the motherboard, and hardware devices on it, check the items in
your motherboard package. Refer to page ix for the list of accessories.
1.1 Before you proceed
Take note of the following precautions before you install motherboard components or change
any motherboard settings.
• Unplug the power cord from the wall socket before touching any component.
• Before handling components, use a grounded wrist strap or touch a safely grounded
object or a metal object, such as the power supply case, to avoid damaging them due to
static electricity.
• Hold components by the edges to avoid touching the ICs on them.
• Whenever you uninstall any component, place it on a grounded antistatic pad or in the
bag that came with the component.
• Before you install or remove any component, ensure that the ATX power supply is
switched off or the power cord is detached from the power supply. Failure to do so may
cause severe damage to the motherboard, peripherals, or components.
Onboard LED
The motherboard comes with a standby power LED that lights up to indicate that the system
is ON, in sleep mode, or in soft-off mode. This is a reminder that you must shut down
the system and unplug the power cable before removing or plugging in any motherboard
component. The illustration below shows the location of the onboard LED.

1-2 Chapter 1: Product introduction
1.2.2 Layout contents
1.2 Motherboard overview
1.2.1 Motherboard layout
Place four screws into the holes indicated by circles to secure the motherboard to the
chassis. DO NOT overtighten the screws! Doing so can damage the motherboard.
Ensure that you install the motherboard into the chassis in the correct orientation. The edge
with external ports goes to the rear part of the chassis.
Place this side towards
the rear of the chassis.
Connectors/Jumpers/Slots/LED Page Connectors/Jumpers/Slots/LED Page
1. ATX power connectors (24-pin EATXPWR, 4-pin
ATX12V) 1-11 7. Chassis intrusion connector (4-1 pin CHASSIS) 1-13
2. CPU, power, and chassis fan connectors (3-pin
CPU_FAN, 3-pin PWR_FAN, 3-pin CHA_FAN) 1-14 8. Onboard LED (SB_PWR) 1-1
3. USB connector (10-1 pin USB910) 1-13 9. Clear RTC RAM (3-pin CLRTC) 1-8
4. Atom 330 processor 1-3 10. Serial ATA connectors (7-pin SATA1,
SATA2, SATA3) 1-12
5. DDR2 DIMM slots 1-3 11. PCI slot 1-7
6. System panel connector (10-1 pin F_PANEL) 1-15 12. Front panel audio connector (10-1 pin
AAFP) 1-14

ASUS AT3N7A-I 1-3
1.3 Central Processing Unit (CPU)
The motherboard comes with an onboard Dual-Core Intel®Atom™ 330 processor and a
specially designed CPU heatsink and fan.
Ensure that the CPU fan cable is connected to the onboard CPU_Fan connector.
1.4 System memory
1.4.1 Overview
The motherboard comes with two Double Data Rate 2 (DDR2) Dual Inline Memory Modules
(DIMM) sockets. The gure illustrates the location of the DDR2 DIMM sockets:
Channel Sockets
Channel A DIMM_A1
Channel B DIMM_B1

1-4 Chapter 1: Product introduction
1.4.2 Memory congurations
You may install 512MB, 1GB, and 2GB unbuffered non-ECC DDR2 DIMMs into the DIMM
sockets.
• You may install varying memory sizes in Channel A and Channel B. The system maps
the total size of the lower-sized channel for the dual-channel conguration. Any excess
memory from the higher-sized channel is then mapped for the single-channel operation.
• Always install DIMMs with the same CAS latency. For optimum compatibility, it is
recommended that you obtain memory modules from the same vendor.
• Due to the memory address limitation on 32-bit Windows®OS, when you install 4GB
or more memory on the motherboard, the actual usable memory for the OS can be
about 3GB or less. For effective use of memory, we recommend that you do any of the
following:
- Use a maximum of 3GB system memory if you are using a 32-bit Windows®OS.
- Install a 64-bit Windows®OS when you want to install 4GB or more memory on
the motherboard.
• This motherboard does not support DIMMs made up of 256 megabits (Mb) chips or less.
This motherboard supports up to 4GB on Windows®XP Professional x64 and Windows®
Vista x64 editions. You may install a maximum of 2GB DIMMs on each slot.
AT3N7A-I Motherboard Qualied Vendors Lists (QVL)
DDR2-667 MHz capability
Size Vendor Part No. SS/
DS
Chip
Brand Chip NO. CL
DIMM
support
A* B*
2048MB A-Data M2OAD5H3J4170I1C53 DS ADATA AD20908A8A-3EG 30724 N/A • •
512MB Apacer 78.91G92.9K5 SS Apacer AM4B5708JQJS7E0751C 5 • •
512MB Apacer AU 512E667C5KBGC SS Apacer AM4B5708GQJS7E06332F 5 • •
512MB Apacer AU 512E667C5KBGC SS Apacer AM4B5708MIJS7E0627B 5 •
1024MB Apacer 78.01G9O.9K5 SS Apacer AM4B5808CQJS7E0751C 5 • •
1024MB Apacer AU01GE667C5KBGC DS Apacer AM4B5708GQJS7E0636B N/A • •
1024MB Apacer AU01GE667C5KBGC DS Apacer AM4B5708MIJS7E0627B 5 • •
2048MB Apacer 78.A1G9O.9K4 DS Apacer AM4B5808CQJS7E0749B 5 • •
512MB Corsair VS 512MB667D2 DS Corsair MIII0052532M8CEC N/A • •
1024MB Corsair VS1GB667D2 DS Corsair MID095D62864M8CEC N/A • •
2048MB(Kit of 2)G.SKILL F2-5400PHU2-2GBNT DS G.SKILL D2 64M8CCF 0815 C7173S 5-5-5-15 • •

ASUS AT3N7A-I 1-5
Size Vendor Part No. SS/DS Chip
Brand Chip NO. CL
DIMM
support
A* B*
2048MB(Kit of 2) A-Data AD2800E001G0U SS N/A Heat-Sink Package 4-4-4-12 • •
1024MB A-Data M2GVD6G314170Q1E58 DS VDATA VD29608A8A-25EG80813 N/A • •
2048MB A-Data AD2800002GMU DS Hynix Heat-Sink Package N/A • •
4096MB(Kit of 2) A-Data AD2800E002GOU DS N/A Heat-Sink Package 4-4-4-12 • •
512MB Apacer 78.91G9I.9K5 SS Apacer AM4B5708JQJS8E0751C 5 • •
1024MB Apacer 78.01GA0.9L5 SS Apacer AM4B5808FEWS8E0909C5 • •
2048MB Apacer 78.A1GA0.9L4 DS Apacer AM4B5808FEWS8E0909C5 • •
1024MB Corsair CM2X1024-6400 DS Corsair Heat-Sink Package N/A • •
1024MB Corsair XMS2-6400 DS Corsair Heat-Sink Package 4 • •
1024MB Corsair XMS2-6400 DS Corsair Heat-Sink Package 5 • •
4096MB(Kit of 2) Corsair CM2X2048-6400C5DHX DS N/A Heat-Sink Package 5 • •
4096MB(Kit of 2) Corsair CM2X2048-6400C5 DS N/A Heat-Sink Package 5 • •
2048MB(kit of 2) Crucial BL12864AL80A.8FE5(EPP) SS N/A Heat-Sink Package 4-4-4-12 • •
2048MB Crucial CT25664AA800.16FG DS Micron 8ZG27 D9JWB 6-6-6-12 • •
4096MB(kit of 2) Crucial BL25664AL80A.16FE5(EPP) DS N/A Heat-Sink Package 4-4-4-12 • •
4096MB(kit of 2) Crucial BL25664AR80A.16FE5(EPP) DS N/A Heat-Sink Package 4-4-4-12 • •
512MB G.SKILL F2-6400CL5D-1GBNQ SS G.SKILL Heat-Sink Package
SN:8151030036642 5-5-5-15 • •
1024MB G.SkiLL F2-6400PHU2-2GBNR SS N/A Heat-Sink Package 5-5-5-15 • •
1024MB G.SKILL F2-6400CL4D-2GBPK DS G.SKILL Heat-Sink Package 4 • •
1024MB G.SKILL F2-6400CL5D-2GBNQ DS G.SKILL Heat-Sink Package 5 • •
2048MB G.SKILL F2-6400CL4D-4GBPK DS G.SKILL Heat-Sink Package 4 • •
2048MB G.SKILL F2-6400CL5D-4GBPQ DS G.SKILL Heat-Sink Package 5 • •
4096MB(Kit of 2 )G.SkiLL F2-6400CL6D-4GBMQ DS N/A Heat-Sink Package 6-6-6-18 • •
4096MB G.SKILL F2-6400CL6Q-16GMQ DS N/A Heat-Sink Package 5 • •
1024MB GEIL GB22GB6400C4DC DS GEIL GL2L64M088BA30EB 5 • •
1024MB GEIL GB22GB6400C5DC DS GEIL GL2L64M088BA30EB 5 • •
1024MB GEIL GB24GB6400C4QC DS GEIL GL2L64M088BA30EB 4 • •
1024MB GEIL GB24GB6400C5QC DS GEIL GL2L64M088BA30EB 5 • •
1024MB GEIL GE22GB800C4DC DS GEIL Heat-Sink Package 4 • •
1024MB GEIL GE22GB800C5DC DS GEIL Heat-Sink Package 5 • •
1024MB GEIL GE24GB800C4QC DS GEIL Heat-Sink Package 4 • •
1024MB GEIL GE24GB800C5QC DS GEIL Heat-Sink Package 5 • •
1024MB GEIL GX22GB6400DC DS GEIL Heat-Sink Package 5 • •
1024MB GEIL GX22GB6400UDC DS GEIL Heat-Sink Package 4 • •
2048MB GEIL GB24GB6400C4DC DS GEIL Heat-Sink Package 5 • •
2048MB GEIL GB24GB6400C5DC DS GEIL GL2L128M88BA25AB 5 • •
2048MB GEIL GB28GB6400C4QC DS GEIL GL2L128M88BA25AB 4 • •
2048MB GEIL GB28GB6400C5QC DS GEIL GL2L128M88BA25AB 5 • •
2048MB GEIL GE24GB800C4DC DS GEIL Heat-Sink Package 4 • •
2048MB GEIL GE24GB800C5DC DS GEIL Heat-Sink Package 5 • •
2048MB GEIL GE28GB800C4QC DS GEIL Heat-Sink Package 4 • •
2048MB GEIL GE28GB800C5QC DS GEIL Heat-Sink Package 5 • •
2048MB GEIL GX22GB6400C4USC DS GEIL Heat-Sink Package 4 • •
2048MB GEIL GX22GB6400LX DS GEIL Heat-Sink Package 5 • •
2048MB GEIL GX24GB6400DC DS GEIL Heat-Sink Package 5 • •
1024MB Kingmax KLDD48F-B8KU5 NGES SS Kingmax KKB8FNUBF-DNX-25A N/A • •
2048MB kingmax KLDE88F-B8KU5 NHES DS kingmax KKB8FNUBF-DNX-25A N/A • •
512MB Kingston KVR800D2N5/ 512(low
prole) SS ELPIDA E5108AJBG-8E-E N/A • •
512MB Kingston KVR800D2N6/ 512 SS Elpida E5108AJBG-8E-E 6 • •
1024MB(Kit of 2) Kingston KHX6400D2LLK2/1GN SS Kingston Heat-Sink Package 4-4-4-12 • •
1024MB Kingston KVR800D2N5/1G(low prole)SS Elpida E1108AEBG-8E-F 5 • •
1024MB Kingston KVR800D2N6/1G(low prole)SS Samsung K4T1G084QE 6 • •
2048MB(Kit of 2) Kingston KHX6400D2K2/2G DS N/A Heat-Sink Package 5-5-5-15 • •
2048MB Kingston KVR800D2N5/2G(low prole)DS Kingston D1288TEFCGL25U 5 • •
2048MB Kingston KVR800D2N6/2G(low prole)DS Samsung K4T1G084QE 6 • •
4096MB Kingston KVR800D2N6/4G DS Elpida E2108ABSE-8G-E 6 • •
2048MB Micron MT16HTF25664AY-800G1 DS Micron 8ZG27 D9JWB 6-6-6-12 • •
1024MB OCZ OCZ2P800R22GK DS OCZ Heat-Sink Package 4-4-4-15 • •
1024MB OCZ OCZ2RPR8002GK DS OCZ Heat-Sink Package 4-4-4-15 • •
DDR2-800 MHz capability
(continued on the next page)

1-6 Chapter 1: Product introduction
Size Vendor Part No. SS/DS Chip
Brand Chip NO. CL
DIMM
support
A* B*
1024MB OCZ OCZ2VU8004GK DS OCZ Heat-Sink Package 5-6-6-18 • •
2048MB(Kit of 2) OCZ OCZ2SE8002GK DS N/A Heat-Sink Package 5-5-5-15 • •
2048MB OCZ OCZ2F8004GK(EPP) DS N/A Heat-Sink Package 5-4-4-18 • •
4096MB(Kit of 2) OCZ OCZ2P8004GK DS N/A Heat-Sink Package 5-4-4-15 • •
4096MB(Kit of 2) OCZ OCZ2VU8004GK DS N/A Heat-Sink Package 5-6-6-18 • •
1024MB PSC AL7E8G73F-8E1 SS PSC P3R1GE3FGF850MAC19 N/A • •
2048MB PSC AL8E8F73C-8E1 DS PSC A3R1GE3CFF734MAA0E 5 • •
2048MB PSC AL8E8G73F-8E1 DS PSC P3R1GE3FGF850MAC19 N/A • •
2048MB PSC PL8E8F73C-8E1 DS PSC SHG772-AA3G 5 • •
2048MB PSC PL8E8G73E-8E1 DS PSC XCP271A3G-A 5 • •
512MB SAMSUNG M378T6553GZS-CF7 SS Qimonda K4T51083QG-HCF7 6 • •
1024MB SAMSUNG M378T2863EHS-CF7 SS Samsung K4T1G084QE N/A • •
1024MB SAMSUNG M378T2863QZS-CF7 SS Qimonda K4T1G084QQ-HCF7 6 • •
1024MB SAMSUNG M378T2953GZ3-CF7 DS Samsung K4T51083QG N/A • •
1024MB SAMSUNG M378T2953GZ3-CF7 DS Samsung K4T51083QG-HCF7 6 • •
2048MB SAMSUNG M37875663QZ3-CF7 DS Samsung K4T1G084QQ-HCF7 6 •
4096MB SAMSUNG M378T5263AZ3-CF7 DS Samsung K4T2G084QA-HCF7 N/A • •
1024MB Super Talent T800UB1GC4 DS Super
Talent Heat-Sink Package 4 • •
512MB Transcend TS64MLQ64V8J SS Micron 7HD22 D9GMH 5 •
1024MB Transcend JM800QLU-1G SS Transced TQ1243PCF8 5 • •
1024MB Transcend TS128MLQ64V8U SS ELPIDA E1108ACBG-8E-E 5 • •
1024MB Transcend JM800QLJ-1G DS Transced TQ123PJF8F0801 5 • •
1024MB Transcend JM800QLJ-1G DS Transcend TQ123YBF8 T0747 5 • •
1024MB Transcend TS128MLQ64V8J DS Mircon 7HD22D9GMH 5 • •
2048MB Transcend JM800QLU-2G DS Transced TQ243PCF8 5 •
2048MB Transcend TS256MLQ64V8U DS Elpida E1108ACBG-8E-E 5 • •
1024MB ASINT SLY2128M8-JGE SS ASINT DDRII1208-GE 8115 N/A • •
2048MB ASINT SLZ2128M8-JGE DS ASINT DDRII1208-GE 8115 N/A • •
1024MB Century 28V0H8 DS Hynix HY5PS12821CFP-S5 5 • •
1024MB Elixir M2Y1G64TU88D5B-AC
0828.GS SS Elixir N2TU16800E-AC N/A • •
2048MB Elixir M2Y2G64TU8HD5B-AC
0826.SG DS Elixir N2TUG80DE-AC N/A • •
1024MB Kingtiger M9CA0Y6109 DS Hynix HY5PS12821C FP-S5 N/A • •
2048MB Kingtiger KTG2G800PG2 DS N/A Heat-Sink Package N/A • •
2048MB Kingtiger M9CA0X8793 DS Hynix HY5PS1G831C FP-S6 N/A • •
1024MB MDT MDT 1024MB DS MDT 18D 51280D-2.50726E 5 • •
4096MB(Kit of 2) PATRIOT PDC24G6400ELK DS N/A Heat-Sink Package 5-5-5-12 • •
512MB TAKEMS TMS51B264C081-805EP SS takeMS MS18T 51280-2.5P0710 5 • •
1024MB TAKEMS TMS1GB264D082-805EE SS TAKEMS WS18T1G80-205 E0905 5 • •
1024MB TAKEMS TMS1GB264C081-804EE DS TAKEMS Heat-Sink Package 4-4-4-12 • •
1024MB TAKEMS TMS1GB264C081-805EP DS takeMS MS18T 51280-2.5P0716 5 • •
2048MB TAKEMS TMS2GB264D081-805KE DS TAKEMS MS18T1G80-205 E0907 5 •
1024MB UMAX D48001GP3-63BJU DS UMAX U2S12D30TP-8E N/A • •
2048MB UMAX D48002GP0-73BCU DS UMAX U2S24D30TP-8E 5 • •
512MB V-Data M2GVD6G3H3160Q1E52 SS VDATA VD29608A8A-25EG20813 N/A • •
1024MB V-Data M2XSSKG3147C1L1C5Z DS Samsung K4T51083QE N/A • •
Visit the ASUS website at www.asus.com for the latest QVL.
SS: Single-sided / DS: Double-sided
DIMM support:
• A*: Supports one module inserted into either slot as the single-channel memory
conguration.
• B*: Supports one pair of modules inserted into both the yellow slots as one pair of
dual-channel memory conguration.
DDR2-800 MHz capability

ASUS AT3N7A-I 1-7
1.5 Expansion slot
In the future, you may need to install expansion cards. The following sub-sections describe
the slot and the expansion cards that it supports.
Unplug the power cord before adding or removing expansion cards. Failure to do so may
cause you physical injury and damage motherboard components.
1.5.1 Installing an expansion card
To install an expansion card:
1. Before installing the expansion card, read the documentation that came with it and
make the necessary hardware settings for the card.
2. Remove the system unit cover (if your motherboard is already installed in a chassis).
3. Remove the bracket opposite the slot that you intend to use. Keep the screw for later
use.
4. Align the card connector with the slot and press rmly until the card is completely
seated on the slot.
5. Secure the card to the chassis with the screw you removed earlier.
6. Replace the system cover.
1.5.2 Conguring an expansion card
After installing the expansion card, congure it by adjusting the software settings.
1. Turn on the system and change the necessary BIOS settings, if any. See Chapter 2 for
information on BIOS setup.
2. Assign an IRQ to the card.
3. Install the software drivers for the expansion card.
1.5.3 PCI slot
The PCI slot supports cards such as a LAN card, SCSI card, USB card, and other cards that
comply with PCI specications.

1-8 Chapter 1: Product introduction
1.6 Jumpers
1. Clear RTC RAM (3-pin CLRTC)
This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can
clear the CMOS memory of date, time, and system setup parameters by erasing
the CMOS RTC RAM data. The onboard button cell battery powers the RAM data in
CMOS, which include system setup information such as system passwords.
Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default
position. Removing the cap will cause system boot failure!
If the steps above do not help, remove the onboard battery and move the jumper again to
clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the battery.
To erase the RTC RAM:
1. Turn OFF the computer and unplug the power cord.
2. Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep the cap on pins 2-3
for about 5-10 seconds, then move the cap back to pins 1-2.
3. Plug the power cord and turn ON the computer.
4. Hold down the <Del> key during the boot process and enter BIOS setup to re-enter
data.

ASUS AT3N7A-I 1-9
1.7 Connectors
1.7.1 Rear panel connectors
1. PS/2 Keyboard port (purple). This port is for a PS/2 keyboard.
2. Video Graphics Adapter (VGA) port. This 15-pin port is for a VGA monitor or other
VGA-compatible devices.
3. USB 2.0 ports 5 and 6. These two 4-pin Universal Serial Bus (USB) ports are
available for connecting USB 2.0 devices.
4. Onboard Bluetooth module. This onboard Bluetooth module allows wireless
connection and data transfer between your system and other Bluetooth devices.
ACT/LINK LED SPEED LED
Status Description Status Description
OFF No link OFF 10 Mbps connection
ORANGE Linked ORANGE 100 Mbps connection
BLINKING Data activity GREEN 1 Gbps connection LAN port
SPEED
LED
ACT/LINK
LED
6. Center/Subwoofer port (orange). This port connects to the center/subwoofer
speakers.
7. Rear Speaker Out port (black). This port connects to the rear speakers in the
4, 6, and 8-channel audio congurations.
8. Line In port (light blue). This port connects to the tape, CD, DVD player, or other
audio sources.
• Due to the limitations of the Bluetooth driver and the Windows®7 OS beta version,
some Bluetooth functions may not be supported in Windows®7 OS beta version, and
Windows® 7 beta version may not recognize the onboard Bluetooth module.
• When Windows® 7 OS is ofcially released, we will release an updated Bluetooth driver,
which will provide the complete Bluetooth functions. Download the latest Bluetooth
driver from the ASUS support wedsite at http://support.asus.com.
5. LAN (RJ-45) port. This port allows Gigabit connection to a Local Area Network (LAN)
through a network hub. Refer to the table below for the LAN port LED indications.
LAN port LED indications

1-10 Chapter 1: Product introduction
12. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are for
USB 2.0 devices.
13. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports are for
USB 2.0 devices.
14. eSATA port. This port connects to an external Serial ATA hard disk drive.
To use hot-plug, set the SATA Mode Select item in the BIOS to [AHCI Mode]. See section
2.3.4 Storage Conguration for details.
Audio 2, 4, 6, or 8-channel conguration
Ensure the audio device of sound playback is VIA High Denition Audio (the name may
be different based on the OS). Go to Start > Control Panel > Sounds and Audio Devices
> Sound Playback to congure the settings.
Port Headset
2-channel 4-channel 6-channel 8-channel
Light Blue Line In Line In Line In Line In
Lime Line Out Front Speaker Out Front Speaker Out Front Speaker Out
Pink Mic In Mic In Mic In Mic In
Orange – – Center/Subwoofer Center/Subwoofer
Black – Rear Speaker Out Rear Speaker Out Rear Speaker Out
Gray – – – Side Speaker Out
15. Optical S/PDIF Out port. This port connects to an external audio output device via an
optical S/PDIF cable.
16. Coaxial S/PDIF Out port. This port connects to an external audio output device via a
coaxial S/PDIF cable.
17. HDMI port. This port is for a High-Denition Multimedia Interface (HDMI) connector,
and is HDCP compliant allowing playback of HD DVD, Blu-Ray, and other protected
content.
18. USB 2.0 ports 7 and 8. These two 4-pin Universal Serial Bus (USB) ports are for
USB 2.0 devices.
Refer to the audio conguration table below for the function of the audio ports in the 2, 4, 6,
or 8-channel conguration.
9. Line Out port (lime). This port connects to a headphone or a speaker. In the 4, 6 and
8-channel congurations, the function of this port becomes Front Speaker Out.
10. Microphone port (pink). This port connects to a microphone.
11. Side Speaker Out port (gray). This port connects to the side speakers in the
8-channel audio conguration.

ASUS AT3N7A-I 1-11
1. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
These connectors are for ATX power supply plugs. The power supply plugs are
designed to t these connectors in only one orientation. Find the proper orientation and
push down rmly until the connectors completely t.
• We recommend that you use an ATX 12V Specication 2.0-compliant power supply unit
(PSU) with a minimum of 400W power rating. This PSU type has 24-pin and 4-pin power
plugs.
• If you intend to use a PSU with 20-pin and 4-pin power plugs, ensure that the 20-pin
power plug can provide at least 15 A on +12 V and that the PSU has a minimum power
rating of 400W. The system may become unstable or may not boot up if the power is
inadequate.
• DO NOT forget to connect the 4-pin ATX +12V power plug. Otherwise, the system will
not boot up.
• We recommend that you use a PSU with higher power output when conguring a
system with more power-consuming devices or when you intend to install additional
devices. The system may become unstable or may not boot up if the power is
inadequate.
• If you are uncertain about the minimum power supply requirement for your system,
refer to the Recommended Power Supply Wattage Calculator at http://support.asus.
com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for details.
1.7.2 Internal connectors