ASUS AT3N7A-I User Manual

AT3N7A-I

Motherboard

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.

ii

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 Motherboard layout .........................................................

1.2.2 Layout contents ...............................................................

1.3 Central Processing Unit (CPU) ...................................................

1.4 System memory ...........................................................................

1.4.1 Overview .........................................................................

1.4.2 Memory congurations ....................................................

1.5 Expansion slot ..............................................................................

1.5.1 Installing an expansion card ...........................................

1.5.2 Conguring an expansion card .......................................

1.5.3 PCI slot ...........................................................................

1.6 Jumpers ........................................................................................

1.7 Connectors ...................................................................................

1.7.1 Rear panel connectors ....................................................

1.7.2 Internal connectors ........................................................

1.8 Software support ........................................................................

1.8.1 Installing an operating system ......................................

1.8.2 Support DVD information ..............................................

1-2

1-2

1-2

1-3

1-3

1-3

1-4

1-7

1-7

1-7

1-7

1-8

1-9

1-9

1-11

1-16

1-16

1-16

Chapter 2: BIOS information

2.1 Managing and updating your BIOS ............................................ 2-1

2.1.1 ASUS Update utility ........................................................

2.1.2 ASUS EZ Flash 2 ............................................................

2.1.3 ASUS CrashFree BIOS ...................................................

2.2 BIOS setup program ....................................................................

2.3 Main menu ....................................................................................

2.3.1 System Time ...................................................................

2.3.2 System Date ...................................................................

2.3.3 SATA 1~3, ESATA ...........................................................

2-1

2-2

2-3

2-4

2-4

2-5

2-5

2-5

iii

Contents

2.3.4 Storage Conguration ..................................................... 2-6

2.3.5 System Information .........................................................

2.4 Advanced menu ...........................................................................

2.4.1 CPU Conguration ..........................................................

2.4.2 JumperFree Conguration ..............................................

2.4.3 Chipset ............................................................................

2.4.4 Onboard Devices Conguration ......................................

2.4.5 USB Conguration ..........................................................

2.4.6 PCI PnP ........................................................................

2.5 Power menu ................................................................................

2.5.1 Suspend Mode ..............................................................

2.5.2 ACPI 2.0 Support ...........................................................

2.5.3 ACPI APIC Support ........................................................

2.5.4 APM Conguration .........................................................

2.5.5 Hardware Monitor ..........................................................

2.6 Boot menu ..................................................................................

2.6.1 Boot Device Priority ......................................................

2.6.2 Boot Settings Conguration ..........................................

2.6.3 Security .........................................................................

2.7 Tools menu .................................................................................

2.7.1 ASUS EZ Flash 2 ..........................................................

2.7.2 Express Gate ................................................................

2.7.3 AI NET 2

2.8 Exit menu ....................................................................................

........................................................................ 2-15

2-6

2-6

2-7

2-7

2-8

2-9

2-9

2-10

2-10

2-10

2-11

2-11

2-11

2-11

2-12

2-12

2-12

2-13

2-14

2-14

2-15

2-15

iv

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.

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.

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.

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.

v

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.

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.

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.

•

Place the product on a stable surface.

•

If you encounter technical problems with the product, contact a qualied service

technician or your retailer.

vi

• RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE.

• DISPOSE OF USED BATTERIES ACCORDING TO THE ABOVE BATTERY-RELATED
INSTRUCTIONS.

This motherboard should only be used in environments with ambient temperatures between
5°C (41°F) and 40°C (104°F).

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.

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.

IMPORTANT: Instructions that you MUST follow to complete a task.

NOTE: Tips and additional information to help you 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>

vii

AT3N7A-I specications summary

CPU Integrated Dual-Core Intel® Atom™ 330 processor
Chipset NVIDIA® ION™
Front Side Bus 533 MHz
Memory Dual channel memory architecture

Graphics Integrated NVIDIA® GeForce Series DirectX10 graphics

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,

Fan Rated Speed: 6000 ± 15% RPM
ASUS special features ASUS CrashFree BIOS 3

- 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.

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.

8 ports at back panel)

ASUS EZ Flash 2
ASUS MyLogo 2™
ASUS AI NET 2
ASUS Express Gate

viii

(continued on the next page)

AT3N7A-I specications summary

Rear panel ports 1 x PS/2 Keyboard port

Internal connectors 1 x USB 2.0/1.1 connector supports additional 2 USB 2.0/1.1

BIOS features 8 Mb Flash ROM, AMI BIOS, PnP, DMI2.0, WfM2.0,

Accessories 2 x Serial ATA cables

Support DVD contents Drivers

Form Factor Mini ITX form factor: 6.75 in x 6.75 in (17.1cm x 17.1cm)

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

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

SMBIOS 2.5, ACPI v2.0a

1 x I/O shield
1 x User Manual

ASUS PC Probe II
ASUS Update
Anti-virus software (OEM version)

*Specications are subject to change without notice.

ix

Chapter 1

Product introduction

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.

If any of the items is damaged or missing, contact your retailer.

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.

ASUS AT3N7A-I 1-1

1.2 Motherboard overview

1.2.1 Motherboard layout

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.

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.

1.2.2 Layout contents

Connectors/Jumpers/Slots/LED Page Connectors/Jumpers/Slots/LED Page

ATX power connectors (24-pin EATXPWR, 4-pin

1.
ATX12V)

CPU, power, and chassis fan connectors (3-pin

2.
CPU_FAN, 3-pin PWR_FAN, 3-pin CHA_FAN)

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.

5. DDR2 DIMM slots 1-3 11. PCI slot 1-7

6. System panel connector (10-1 pin F_PANEL) 1-15 12.

1-11 7.

1-14 8. Onboard LED (SB_PWR) 1-1

1-2 Chapter 1: Product introduction

Chassis intrusion connector (4-1 pin
CHASSIS)

Serial ATA connectors (7-pin SATA1,
SATA2, SATA3)

Front panel audio connector (10-1 pin
AAFP)

1-13

1-12

1-14

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

ASUS AT3N7A-I 1-3

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
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

- 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

®

OS, when you install 4GB

®

OS.

Size Vendor Part No.

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 • •

SS/DSChip

Brand

Chip NO. CL

DIMM
support
A* B*

1-4 Chapter 1: Product introduction

DDR2-800 MHz capability

Size Vendor Part No. SS/DS

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 AM4B5808FEWS8E0909C 5 • •
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

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

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 • •

KVR800D2N5/ 512(low

prole)

Chip

Chip NO. CL

Brand

Heat-Sink Package
SN:8151030036642

SS ELPIDA E5108AJBG-8E-E N/A • •

DIMM
support
A* B*

5-5-5-15 • •

(continued on the next page)

ASUS AT3N7A-I 1-5

DDR2-800 MHz capability

Size Vendor Part No. SS/DS

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

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

2048MB Elixir

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 • •

M2Y1G64TU88D5B-AC

0828.GS
M2Y2G64TU8HD5B-AC

0826.SG

Chip

Chip NO. CL

Brand

Super

Heat-Sink Package 4 • •

Talent

SS Elixir N2TU16800E-AC N/A • •

DS Elixir N2TUG80DE-AC N/A • •

DIMM
support
A* B*

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.

Visit the ASUS website at www.asus.com for the latest QVL.

1-6 Chapter 1: Product introduction

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.

ASUS AT3N7A-I 1-7

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.

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
data.

Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default
position. Removing the cap will cause system boot failure!

<Del> key during the boot process and enter BIOS setup to re-enter

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.

1-8 Chapter 1: Product introduction

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.

connection and data transfer between your system and other Bluetooth devices.

• 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
which will provide the complete Bluetooth functions. Download the latest Bluetooth
driver from the ASUS support wedsite at http://support.asus.com.

This onboard Bluetooth module allows wireless

®

7 OS is ofcially released, we will release an updated Bluetooth driver,

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

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

ACT/LINK

LED

LAN port

SPEED

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.

ASUS AT3N7A-I 1-9

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).

11. Side Speaker Out port (gray).

This port connects to a microphone.

This port connects to the side speakers in the

8-channel audio conguration.

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.

Audio 2, 4, 6, or 8-channel conguration

Port

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

Headset

2-channel

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.

4-channel 6-channel 8-channel

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.

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.

1-10 Chapter 1: Product introduction

1.7.2 Internal connectors

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.

ASUS AT3N7A-I 1-11

2. Serial ATA connectors (7-pin SATA1, SATA2, SATA3)

These connectors are for the Serial ATA signal cables for Serial ATA 3Gb/s hard disk
drives and optical disk drives. The Serial ATA 3Gb/s is backward compatible with the

Serial ATA 1.5Gb/s specication. The data transfer rate of the Serial ATA 3Gb/s is faster

than the standard parallel ATA (133 MB/s).

• Install the Windows® XP Service Pack 1 or later versions before using Serial ATA.

• If you intend to create a Serial ATA RAID set using these connectors, set the

Mode Select item in the BIOS to [RAID Mode]. See 2.3.4 Storage Conguration for
details.

• The motherboard does not provide a oppy disk drive connector. You could use a USB
oppy disk drive when installing Windows® XP operating system on a hard disk drive

that includes a RAID/AHCI set.

• Due to Windows
drive.

• The motherboard does not support installing Windows
RAID/AHCI mode.

• You need to copy RAID driver to other media such as a USB ash disk and load RAID

driver during installing Windows® Vista OS with SATA ODD.

• For more details on RAID/AHCI, refer to the RAID/AHCI Supplementary Guide included
in the folder named Manual in the support DVD.

®

XP limitation, Windows® XP may not recognize the USB oppy disk

®

XP OS with SATA ODD under

SATA

1-12 Chapter 1: Product introduction

3. USB connector (10-1 pin USB910)

This connector is for a USB 2.0 port. Connect the USB module cable to this connector,
then install the module to a slot opening at the back of the system chassis. This USB

connector complys with USB 2.0 specication that supports up to 480 Mbps connection

speed.

Never connect a 1394 cable to the USB connector. Doing so will damage the motherboard!

The USB module cable is purchased separately.

4. Chassis intrusion connector (4-1 pin CHASSIS)

This connector is for a chassis-mounted intrusion detection sensor or switch. Connect
one end of the chassis intrusion sensor or switch cable to this connector. The chassis
intrusion sensor or switch sends a high-level signal to this connector when a chassis
component is removed or replaced. The signal is then generated as a chassis intrusion
event.

By default, the pin labeled “Chassis Signal” and “Ground” are shorted with a jumper
cap. Remove the jumper caps only when you intend to use the chassis intrusion
detection feature.

ASUS AT3N7A-I 1-13

5. CPU, power, and chassis fan connectors (3-pin CPU_FAN, 3-pin PWR_FAN, 3-pin
CHA_FAN)

The fan connectors support cooling fans of 350 mA~2000 mA (24 W max.) or a total of
1 A~3.48 A (41.76 W max.) at +12V. Connect the fan cables to the fan connectors on
the motherboard, ensuring that the black wire of each cable matches the ground pin of
the connector.

Do not forget to connect the fan cables to the fan connectors. Insufcient air ow inside the

system may damage the motherboard components. These are not jumpers! Do not place
jumper caps on the fan connectors!

6. Front panel audio connector (10-1 pin AAFP)

This connector is for a chassis-mounted front panel audio I/O module that supports
either HD Audio or legacy AC`97 audio standard. Connect one end of the front panel
audio I/O module cable to this connector.

• We recommend that you connect a high-denition front panel audio module to this
connector to avail of the motherboard’s high-denition audio capability.

•

If you want to connect a high-denition front panel audio module to this connector, set

the Front Panel Select item in the BIOS setup to [HD Audio]. If you want to connect an
AC'97 front panel audio module to this connector, set the item to [AC97]. By default, this
connector is set to [HD Audio]. See section 2.4.4 Onboard Devices Conguration for
details.

1-14 Chapter 1: Product introduction

7. System panel connector (10-1 pin F_PANEL)

This connector supports several chassis-mounted functions.

• System power LED (2-pin PLED)

This 2-pin connector is for the system power LED. Connect the chassis power LED
cable to this connector. The system power LED lights up when you turn on the system
power, and blinks when the system is in sleep mode.

•

Hard disk drive activity LED (2-pin HD_LED)

This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable

to this connector. The HD LED lights up or ashes when data is read from or written to

the HDD.

•

ATX power button/soft-off button (2-pin PWRBTN)

This connector is for the system power button. Pressing the power button turns
the system on or puts the system in sleep or soft-off mode depending on the BIOS
settings. Pressing the power switch for more than four seconds while the system is ON
turns the system OFF.

•

Reset button (2-pin RESET)

This 2-pin connector is for the chassis-mounted reset button for system reboot without
turning off the system power.

ASUS AT3N7A-I 1-15

1.8 Software support

1.8.1 Installing an operating system

This motherboard supports Windows® XP/Vista Operating Systems (OS). Always install the

latest OS version and corresponding updates to maximize the features of your hardware.

• Motherboard settings and hardware options vary. Refer to your OS documentation for
detailed information.

• Ensure that you install Windows
Service Pack 1 or later versions before installing the drivers for better compatibility and
system stability.

1.8.2 Support DVD information

The Support DVD that comes with the motherboard package contains the drivers, software
applications, and utilities that you can install to avail all motherboard features.

The contents of the Support DVD are subject to change at any time without notice. Visit the
ASUS website at www.asus.com for updates.

To run the Support DVD

Place the Support DVD to the optical drive. The DVD automatically displays the Drivers menu
if Autorun is enabled in your computer.

The following screen is for reference only.

®

XP Service Pack 3 or later versions / Windows® Vista

Click an icon to
display Support DVD/
motherboard information

Click an item to install

If Autorun is NOT enabled in your computer, browse the contents of the Support DVD to

locate the le ASSETUP.EXE from the BIN folder. Double-click the ASSETUP.EXE to run

the DVD.

1-16 Chapter 1: Product introduction

Chapter 2

BIOS information

2.1 Managing and updating your BIOS

Save a copy of the original motherboard BIOS le to a USB ash disk in case you need to

restore the BIOS in the future. Copy the original motherboard BIOS using the ASUS Update
utility.

2.1.1 ASUS Update utility

The ASUS Update is a utility that allows you to manage, save, and update the motherboard
BIOS in Windows® environment.

• ASUS Update requires an Internet connection either through a network or an Internet
Service Provider (ISP).

• This utility is available in the support DVD that comes with the motherboard package.

Installing ASUS Update

To install ASUS Update:

1. Place the support DVD in the optical drive. The

2. Click the

3. Follow the onscreen instructions to complete the installation.

Utilities tab, then click ASUS Update.

Drivers menu appears.

Quit all Windows® applications before you update the BIOS using this utility.

Updating the BIOS

To update the BIOS:

1. From the Windows

ASUSUpdate to launch the ASUS Update utility.

2. From the dropdown list, select any of the updating process:

Updating from the Internet

a. Select Update BIOS from the Internet, then click Next.

b. Select the ASUS FTP site nearest you to avoid network trafc, or click Auto

Select

c. From the FTP site, select the BIOS version that you wish to download then click

Next.

ASUS AT3N7A-I 2-1

®

desktop, click Start > Programs > ASUS > ASUSUpdate >

then click Next.

The ASUS Update utility is capable of updating itself through the Internet. Always update
the utility to avail all its features.

Updating from a BIOS file

a. Select Update BIOS from a le, then click Next.

b. Locate the BIOS le from the

Open window, then click Open.

3. Follow the onscreen instructions to complete the updating process.

2.1.2 ASUS EZ Flash 2

The ASUS EZ Flash 2 feature allows you to update the BIOS without using an OS-based
utility.

Before you start using this utility, download the latest BIOS le from the ASUS website at

www.asus.com.

To update the BIOS using EZ Flash 2:

1. Insert the USB ash disk that contains the latest BIOS le to the USB port, then launch

EZ Flash 2 in any of these two ways:

• Press

• Enter the BIOS setup program. Go to the

press <Enter> to enable it.

Press

<Alt> + <F2> during POST.

Tools menu to select EZ Flash 2 and

<Tab> to switch between drives until the correct BIOS le is found.

ASUSTek EZ Flash 2 BIOS ROM Utility V3.38

FLASH TYPE: MXIC 25L8005

Current ROM

BOARD: AT3N7A-I
VER: 0210 (H:00 B:05)
DATE: 07/16/2009

PATH: A:\

A:

Update ROM

BOARD: Unknown
VER: Unknown
DATE: Unknown

Note

[Enter] Select or Load [Tab] Switch [V] Drive Info

[Up/Down/Home/End] Move [B] Backup [ESC] Exit

2. When the correct BIOS le is found, EZ Flash 2 performs the BIOS update process

and automatically reboots the system when done.

2-2 Chapter 2: BIOS information

• This function supports USB ash disks with FAT 32/16 format and single partition only.

• DO NOT shut down or reset the system while updating the BIOS to prevent system boot
failure!

2.1.3 ASUS CrashFree BIOS

The ASUS CrashFree BIOS is an auto recovery tool that allows you to restore the BIOS le

when it fails or gets corrupted during the updating process. You can restore a corrupted BIOS

le using the motherboard support DVD or a removable device that contains the updated
BIOS le.

• The BIOS le in the support DVD may not be the latest version. Download the latest
BIOS le from the ASUS website at www.asus.com.

• The removable devices that ASUS CrashFree BIOS support vary with motherboard

models. For motherboards without the oppy connector, prepare a USB ash disk before

using this utility.

Recovering the BIOS

To recover the BIOS:

1. Turn on the system.

2. Insert the support DVD to the optical drive or the removable device that contains the

BIOS le to the USB port or to the oppy disk drive, if supported.

3. The utility automatically checks the devices for the BIOS le. When found, the utility
reads the BIOS le and starts ashing the corrupted BIOS le.

4. Turn off the system after the utility completes the updating process and turn on again.

DO NOT shut down or reset the system while updating the BIOS! Doing so can cause
system boot failure!

Ensure to load the BIOS default settings to ensure system compatibility and stability. Select
the Load Setup Defaults item under the Exit menu. Refer to section 2.8 Exit menu for
details.

ASUS AT3N7A-I 2-3

2.2 BIOS setup program

Use the BIOS Setup program to update the BIOS or congure its parameters. The BIOS

screens include navigation keys and brief online help to guide you in using the BIOS Setup
program.

Entering BIOS Setup at startup

To enter BIOS Setup at startup:

• Press <Delete> during the Power-On Self Test (POST). If you do not press <Delete>,
POST continues with its routines.

Entering BIOS Setup after POST

To enter BIOS Setup after POST:

• Press

• Press the reset button on the system chassis.

• Press the power button to turn the system off then back on. Do this option only if you

<Ctrl>+<Alt>+<Del> simultaneously.

failed to enter BIOS Setup using the rst two options.

Using the power button, reset button, or the <Ctrl>+<Alt>+<Del> keys to force reset from
a running operating system can cause damage to your data or system. We recommend to
always shut down the system properly from the operating system.

• The default BIOS settings for this motherboard apply for most conditions to ensure
optimum performance. If the system becomes unstable after changing any BIOS
settings, load the default settings to ensure system compatibility and stability. Select the
Load Setups Default item under the Exit Menu. See section 2.8 Exit Menu.

• The BIOS setup screens shown in this section are for reference purposes only, and may
not exactly match what you see on your screen.

• Visit the ASUS website at www.asus.com to download the latest BIOS le for this

motherboard.

2.3 Main menu

When you enter the BIOS Setup program, the Main menu screen appears, giving you an
overview of the basic system information.

Main Advanced Power Boot Tools Exit

System Time [00:31:48]

System Date [Sat 01/12/2002]

SATA 1 [Not Detected]
SATA 2 [Not Detected]
SATA 3 [Not Detected]
ESATA [Not Detected]

Storage Conguration

System Information

v02.58 (C)Copyright 1985-2009, American Megatrends, Inc.

2-4 Chapter 2: BIOS information

BIOS SETUP UTILITY

Use [ENTER], [TAB] or
[SHIFT-TAB] to select

a eld.

Use [+] or [-] to

congure system time.

Select Screen

Select Item
+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

2.3.1 System Time [xx:xx:xx]

Allows you to set the system time.

2.3.2 System Date [Day xx/xx/xxxx]

Allows you to set the system date.

2.3.3 SATA 1~3, ESATA

While entering Setup, the BIOS automatically detects the presence of SATA devices. There
is a separate sub-menu for each SATA device. Select a device item then press <Enter> to
display the SATA device information.

The BIOS automatically detects the values opposite the dimmed items (Device, Vendor, Size,

LBA Mode, Block Mode, PIO Mode, Async DMA, Ultra DMA, and SMART Monitoring). These

values are not user-congurable. These items show Not Detected if no Serial ATA device is

installed in the system.

Type [Auto]

Selects the type of SATA drive. Setting to Auto allows automatic selection of the appropriate

SATA device type. Select CDROM if you are specically conguring a CD-ROM drive. Select

ARMD (ATAPI Removable Media Device) if your device is either a ZIP, LS-120, or MO drive.

Conguration options: [Not Installed] [Auto] [CDROM] [ARMD]

LBA/Large Mode [Auto]

Enables or disables the LBA mode. Setting to [Auto] enables the LBA mode if the device
supports this mode, and if the device was not previously formatted with LBA mode disabled.

Conguration options: [Disabled] [Auto]

Block (Multi-sector Transfer) M [Auto]

Enables or disables data multi-sectors transfers. When set to [Auto], the data transfer from
and to the device occurs multiple sectors at a time if the device supports multi-sector transfer
feature. When set to [Disabled], the data transfer from and to the device occurs one sector

at a time. Conguration options: [Disabled] [Auto]

PIO Mode [Auto]

Selects the PIO mode. Conguration options: [Auto] [0] [1] [2] [3] [4]

DMA Mode [Auto]

Selects the DMA mode. Conguration options: [Auto]

SMART Monitoring [Auto]

Sets the Smart Monitoring, Analysis, and Reporting Technology.

Conguration options: [Auto] [Disabled] [Enabled]

32Bit Data Transfer [Enabled]

Enables or disables 32-bit data transfer. Conguration options: [Disabled] [Enabled]

ASUS AT3N7A-I 2-5

2.3.4 Storage Conguration

The items in this menu allow you to set or change the congurations for the SATA devices

installed in the system. Select an item then press <Enter> if you want to congure the item.

OnChip S-ATA Controller [Enabled]

Enables or disables the OnChip SATA controller. Conguration options: [Disabled] [Enabled]

SATA Mode Select [SATA Mode]

This item appears only when you set the OnChip SATA Controller item to [Enabled]. Allows
you to set the OnChip SATA mode. Conguration options: [SATA Mode] [RAID Mode] [AHCI
Mode]

Hard Disk Write Protect [Disabled]

Disables or enables device write protection. This will be effective only if device is accessed

throuh BIOS. Conguration option: [Disabled] [Enabled]

IDE Detect Time Out (Sec) [5]

Selects the time out value for detecting ATA/ATAPI devices.

Conguration options: [0] [5] [10] [15] [20] [25] [30] [35]

2.3.5 System Information

This menu gives you an overview of the general system specications. The BIOS

automatically detects the items in this menu.

BIOS Information

Displays the auto-detected BIOS information.

Processor

Displays the auto-detected CPU specication.

System Memory

Displays the auto-detected system memory.

2.4 Advanced menu

The Advanced menu items allow you to change the settings for the CPU and other system
devices.

Take caution when changing the settings of the Advanced menu items. Incorrect eld

values can cause the system to malfunction.

Main Advanced Power Boot Tools Exit

CPU Conguration

JumperFree Conguration

Chipset

Onboard Devices Conguration
USB Conguration

PCIPnP

2-6 Chapter 2: BIOS information

BIOS SETUP UTILITY

Congure CPU.

2.4.1 CPU Conguration

The items in this menu show the CPU-related information that the BIOS automatically
detects.

Max CPUID Value Limit [Disabled]

Allows you to determine whether to limit CPUID maximum value. Set this item to [Disabled]
for Windows XP operating system; set this item to [Enabled] for legacy operating system
such as Windows NT4.0. Conguration options: [Disabled] [Enabled]

CPU TM function [Enabled]

Enables or disables Intel® CPU Thermal Monitor (TM) function, a CPU overheating protection
function. When enabled, the CPU core frequency and voltage are reduced when the CPU

overheats. Conguration options: [Disabled] [Enabled]

Execute-Disable Bit Capability [Enabled]

Allows you to enable or disable the No-Execution Page Protection Technology. Setting this
item to [Disabled] forces the XD feature ag to always return to zero (0). Conguration

options: [Disabled] [Enabled]

Hyper Threading Technology [Enabled]

Allows you to enable or disable the Intel® Hyper Threading technology. Conguration options:

[Disabled] [Enabled]

2.4.2 JumperFree Conguration

The items in this menu allows you to adjust the system frequency/voltage.

System Clock Mode [Auto]

Allows you to select the system clock mode. Conguration options: [Auto] [Linked] [Unlinked]
[Proled]

iGPU OverClock Mode [Auto]

Allows selection of GPU overclocking options to achieve desired GPU frequency.

Conguration options: [Auto] [Manual]

The following two items appear only when you set the iGPU OverClock Mode item to
[Manual].

iGPU OverClock [450]

Allows you to enter an integer value from 450MHz to 999MHz to overclock for GPU.
Conguration options: [Min.=450] [Max.=999]

Shader OverClock [1200]

Allows you to enter an integer value from 1200MHz to 2000MHz to overclock for
shader. Conguration options: [Min.=1200] [Max.=2000]

DRAM Over Voltage [Auto]

Manually set memory voltage or set to Auto for safe mode.

Conguration options: [Auto] [1.92V] [2.00V]

Chipset Voltage [Auto]

Sets the chipset voltage. Conguration options: [Auto] [1.0V] [1.05V]

ASUS AT3N7A-I 2-7

CPU Vcore Over Voltage Control [Auto]

Sets the CPU Vcore over voltage. Conguration options: [Auto] [+100mV]

Memory Timings [Auto]

Sets the memory timings. Conguration options: [Auto] [Manual]

The following items appear only when you set the Memory Timings item to [Manual].

tCL (CAS Latency) [Auto]

Conguration options: [Auto] [5] [6] [7]

tRCD [Auto]

Conguration options: [Auto] [1] [2] [3] [4] [5] [6] [7]

tRP [Auto]

Conguration options: [Auto] [1] [2] [3] [4] [5] [6] [7]

tRAS [Auto]

Conguration options: [Auto] [1] [2] [3] [4] [5] [6] [7] [8]

Command Per Clock (CMD) [Auto]

Conguration options: [Auto] [1T] [2T]

tRRD [Auto]

Conguration options: [Auto] [1] [2] [3] [4] [5] [6] [7] [8]

tRC [Auto]

Conguration options: [Auto] [1] [2] [3] [4] [5] [6] [7] [8]

tWR [Auto]

Conguration options: [Auto] [2] [3] [4] [5] [6]

tWTR [Auto]

Conguration options: [Auto] [1] [2] [3] [4] [5] [6] [7] [8]

Burst Length [Auto]

Conguration options: [Auto] [4]

2.4.3 Chipset

The Chipset menu allows you to change the advanced chipset settings. Select an item then
press <Enter> to display the sub-menu.

ION Conguration

Primary Graphics Adapter [Internal VGA First]

Allows you to set the primary graphics adapter. Conguration options: [PCI VGA Card First]
[Internal VGA First]

iGPU Frame Buffer Detect [Auto]

Allows you to disable the iGPU frame buffer detect or set it to Auto for safe mode.

Conguration options: [Auto] [Disabled]

iGPU Frame Buffer Size [Auto]

This item becomes user-congurable only when you set the iGPU Frame Buffer Detect item
to [Disabled]. Allows you to select the iGPU frame buffer size. Conguration options: [32MB]
[64MB] [128MB] [256MB] [512MB] [Disabled]

2-8 Chapter 2: BIOS information

2.4.4 Onboard Devices Conguration

AZALIA AUDIO [Auto]

Allows you to set the Azalia audio.
Conguration options: [Auto] [Disabled]

Front Panel Select [HD Audio]

Allows you to select the front panel type. If High Denition Audio Front Panel used, please set
HD Audio mode. Conguration options: [AC97] [HD Audio]

Onboard Gigabit LAN [Enabled]

Allows you to enable or disable the onboard LAN controller.

Conguration options: [Enabled] [Disabled]

LAN Option ROM [Disabled]

Allows you to enable or disable the boot ROM in the onboard LAN controller. This item

appears only when the Onboard LAN item is set to Enabled. Conguration options:
[Disabled] [Enabled]

Onboard Bluetooth [Enabled]

Allows you to enable or disable the onboard Bluetooth controller.

Conguration options: [Enabled] [Disabled]

2.4.5 USB Conguration

The items in this menu allows you to change the USB-related features. Select an item then
press <Enter> to display the conguration options.

The Module Version and USB Devices Enabled items show the auto-detected values. If no
USB device is detected, the item shows None.

USB Functions [Enabled]

Allows you to disable or enable the USB functions.

Conguration options: [Disabled] [Enabled]

USB 2.0 Controller [Enabled]

Allows you to enable or disable USB 2.0 controller.

Conguration options: [Enabled] [Disabled]

Legacy USB Support [Auto]

Allows you to enable or disable support for Legacy USB storage devices, including USB ash

drives and USB hard drives. Setting to [Auto] allows the system to detect the presence of
USB devices at startup. If detected, the USB controller legacy mode is enabled. If no USB
device is detected, the legacy USB support is disabled.

Conguration options: [Disabled] [Enabled] [Auto]

USB 2.0 Controller Mode [HiSpeed]

Allows you to congure the USB 2.0 controller in HiSpeed (480Mbps) or Full Speed
(12Mbps). Conguration options: [FullSpeed] [HiSpeed]

ASUS AT3N7A-I 2-9

The following items may only appear when a USB storage device is plugged.

USB Mass Storage Device Conguration

USB Mass Storage Reset Delay [20 Sec]

Allows you to set the maximum time that the BIOS waits for the USB storage device to

initialize. Conguration options: [10 Sec] [20 Sec] [30 Sec] [40 Sec]

Emulation Type [Auto]

Allows you to select the emulation type. Conguration options: [Auto] [Floppy] [Forced
FDD] [Hard Disk] [CDROM]

2.4.6 PCI PnP

The PCI PnP menu items allow you to change the advanced settings for PCI/PnP devices.
The menu includes setting IRQ and DMA channel resources for either PCI/PnP or legacy ISA

devices, and setting the memory size block for legacy ISA devices.

Take caution when changing the settings of the PCI PnP menu items. Incorrect eld values

can cause the system to malfunction.

Plug and Play O/S [No]

When set to [No], BIOS congures all the devices in the system. When set to [Yes] and if you
install a Plug and Play operating system, the operating system congures the Plug and Play
devices not required for boot. Conguration options: [No] [Yes]

2.5 Power menu

The Power menu items allow you to change the settings for the Advanced Power
Management (APM). Select an item then press <Enter> to display the conguration options.

Main Advanced Power Boot Tools Exit

Suspend Mode [Auto]

ACPI 2.0 Support [Disabled]
ACPI APIC Support [Enabled]

APM Conguration

Hardware Monitor

BIOS SETUP UTILITY

Select the ACPI state
used for System
Suspend.

2.5.1 Suspend Mode [Auto]

Allows you to select the Advanced Conguration and Power Interface (ACPI) state to be used
for system suspend. Conguration options: [S1 (POS) Only] [S3 Only] [Auto]

[S1(POS) Only] - Enables the system to enter the ACPI S1 (Power on Suspend) sleep

state. In S1 sleep state, the system appears suspended and stays in a low power
mode. The system can be resumed at any time.

[S3 Only] - Enables the system to enter the ACPI S3 (Suspend to RAM) sleep state

(default). In S3 sleep state, the system appears to be off and consumes less power
than in the S1 state. When signaled by a wake-up device or event, the system resumes
to its working state exactly where it was left off.

[Auto] - Detected by OS.

2-10 Chapter 2: BIOS information

2.5.2 ACPI 2.0 Support [Disabled]

Allows you to add more tables for Advanced Conguration and Power Interface (ACPI) 2.0
specications. Conguration options: [Disabled] [Enabled]

2.5.3 ACPI APIC Support [Enabled]

Allows you to enable or disable the Advanced Conguration and Power Interface (ACPI)
support in the Application-Specic Integrated Circuit (ASIC). When set to Enabled, the ACPI

APIC table pointer is included in the RSDT pointer list.

Conguration options: [Disabled] [Enabled]

2.5.4 APM Conguration

Restore on AC Power Loss [Power Off]

When set to [Power Off], the system goes into off state after an AC power loss. When set
to [Power On], the system goes on after an AC power loss. When set to [Last State], the
system goes into either off or on state, whatever the system state was before the AC power

loss. Conguration options: [Power Off] [Power On] [Last State]

Power On By PCI(E) Device [Disabled]

Allows you to enable or disable PME to generate a wake event. This feature requires an ATX

power supply that provides at least 1A on the +5VSB lead. Conguration options: [Disabled]
[Enabled]

Power On By PS/2 [Disabled]

When set to [Enabled], this parameter allows you to use the PS/2 keyboard/mouse to turn

on the system. This feature requires an ATX power supply that provides at least 1A on the

+5VSB lead. Conguration options: [Disabled] [Enabled]

Power On By RTC Alarm [Disabled]

Allows you to enable or disable RTC to generate a wake event. When this item is set to
Enabled, the items RTC Alarm Date, RTC Alarm Hour, RTC Alarm Minute, and RTC Alarm

Second appear with set values. Conguration options: [Disabled] [Enabled]

2.5.5 Hardware Monitor

CPU Temperature [xxxºC/xxxºF] or [Ignored]

The onboard hardware monitor automatically detects and displays the CPU temperature.
Select Ignored if you do not wish to display the detected temperatures.

CPU/Chassis/Power Fan Speed [xxxxRPM] or [Ignored]

The onboard hardware monitor automatically detects and displays the CPU/chassis/power
fan speeds in rotations per minute (RPM). If the fan is not connected to the motherboard, the

eld shows N/A. Select Ignored if you do not wish to display the detected speed.

VCORE Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage [xxxV] or [Ignored]

The onboard hardware monitor automatically detects the voltage output through the onboard
voltage regulators.

ASUS AT3N7A-I 2-11

2.6 Boot menu

The Boot menu items allow you to change the system boot options. Select an item then
press <Enter> to display the sub-menu.

Main Advanced Power Boot Tools Exit

Boot Settings

Boot Device Priority

Boot Settings Conguration

Security

2.6.1 Boot Device Priority

1st ~ xxth Boot Device

These items specify the boot device priority sequence from the available devices. The
number of device items that appears on the screen depends on the number of devices

installed in the system. Conguration options: [Removable Dev.] [Hard Drive]
[ATAPI CD-ROM] [Disabled]

• To select the boot device during system startup, press <F8> when ASUS Logo appears.

• To access Windows

• Press <F5> when ASUS Logo appears.

• Press <F8> after POST.

2.6.2 Boot Settings Conguration

Quick Boot [Enabled]

Enabling this item allows the BIOS to skip some power on self tests (POST) while booting to
decrease the time needed to boot the system. When set to [Disabled], BIOS performs all the

POST items. Conguration options: [Disabled] [Enabled]

Full Screen Logo [Enabled]

This allows you to enable or disable the full screen logo display feature. Conguration
options: [Disabled] [Enabled]

BIOS SETUP UTILITY

Species the Boot

Device Priority
sequence.

A virtual oppy disk

drive (Floppy Drive B:)
may appear when you set
the CD-ROM drive as the

rst boot device.

®

OS in Safe Mode, do any of the following:

Set this item to [Enabled] to use the ASUS MyLogo2™ feature.

AddOn ROM Display Mode [Force BIOS]

Sets the display mode for option ROM. Conguration options: [Force BIOS] [Keep Current]

Bootup Num-Lock [On]

Allows you to select the power-on state for the NumLock. Conguration options: [Off] [On]

2-12 Chapter 2: BIOS information

Wait For ‘F1’ If Error [Enabled]

When set to Enabled, the system waits for the F1 key to be pressed when error occurs.

Conguration options: [Disabled] [Enabled]

Hit ‘DEL’ Message Display [Enabled]

When set to [Enabled], the system displays the message Press DEL to run Setup during

POST. Conguration options: [Disabled] [Enabled]

2.6.3 Security

The Security menu items allow you to change the system security settings. Select an item
then press <Enter> to display the conguration options.

Change Supervisor Password

Select this item to set or change the supervisor password. The Supervisor Password item
on top of the screen shows the default Not Installed. After you set a password, this item
shows Installed.

To set a Supervisor Password:

1. Select the

2. In the password box, key in a password containing up to six letters or numbers, or

both, then press <Enter>.

3. Conrm the password when prompted.

The message Password Installed appears after you successfully set your password.

To change the supervisor password, follow the same steps in setting a supervisor password.

To clear the supervisor password, select the Change Supervisor Password then press

<Enter> twice. The message Password uninstalled appears.

Change Supervisor Password item and press <Enter>.

If you forget your BIOS password, you can clear it by erasing the CMOS Real Time Clock
(RTC) RAM. See section 1.6 Jumpers for information on how to erase the RTC RAM.

After you have set a supervisor password, the other items appear to allow you to change
other security settings.

User Access Level [Full Access]

This item allows you to select the access restriction to the Setup items.

Conguration options: [No Access] [View Only] [Limited] [Full Access]

[No Access] - prevents user access to the Setup utility.
[View Only] - allows access but does not allow change to any eld.
[Limited] - allows changes only to selected elds, such as Date and Time.
[Full Access] - allows viewing and changing all the elds in the Setup utility.

ASUS AT3N7A-I 2-13

Change User Password

Select this item to set or change the user password. The User Password item on top of the
screen shows the default Not Installed. After you set a password, this item shows Installed.

To set a User Password:

1. Select the

Change User Password item and press <Enter>.

2. In the password box, key in a password containing up to six letters or numbers, or

both, then press <Enter>.

3. Conrm the password when prompted.

The message Password Installed appears after you set your password successfully.
To change the user password, follow the same steps in setting a user password.

Clear User Password

Select this item to clear the user password.

Password Check [Setup]

When set to [Setup], BIOS checks for user password when accessing the Setup utility. When
set to [Always], BIOS checks for user password both when accessing Setup and booting the

system. Conguration options: [Setup] [Always]

2.7 Tools menu

The Tools menu items allow you to congure options for special functions. Select an item

then press <Enter> to display the sub-menu.

Main Advanced Power Boot Tools Exit

ASUS EZ Flash 2

Express Gate [Auto]
Enter OS Timer [10 Seconds]
Reset User Data [No]

AI NET2

BIOS SETUP UTILITY

Press ENTER to run the
utility to select and
update BIOS.
This utility supports

1.FAT 12/16/32(r/w)

2.NTFS(read only)

3.CD-DISC(read only)

2.7.1 ASUS EZ Flash 2

Allows you to run ASUS EZ Flash 2. When you press <Enter>, a conrmation message
appears. Use the left/right arrow key to select between [Yes] or [No], then press <Enter> to
conrm your choice. See section 2.1.2 ASUS EZ Flash 2 for details.

2-14 Chapter 2: BIOS information

Exit system setup
after saving the
changes.

F10 key can be used
for this operation.

2.7.2 Express Gate [Auto]

Allows you to enable or disable the ASUS Express Gate feature. ASUS Express Gate is
a unique instant-on environment that provides quick access to the Internet and Skype.

Conguration options: [Enabled] [Disabled] [Auto]

Enter OS Timer [10 Seconds]

Sets countdown duration that the system waits at the Express Gate’s rst screen

before starting Windows or other installed OS. Choose [Prompt User] to stay at the

rst screen of Express Gate for user action. Conguration options: [Prompt User]
[1 second] [3 seconds] [5 seconds] [10 seconds] [15 seconds] [20 seconds]
[30 seconds]

Reset User Data [No]

Allows you to clear Express Gate’s user data. Conguration options: [No] [Reset]

When setting this item to [Reset], ensure to save the setting to the BIOS so that the
user data will be cleared the next time you enter the Express Gate. User data includes
the Express Gate’s settings as well as any personal information stored by the web
browser (bookmarks, cookies, browsing history, etc.). This is useful in the rare case
where corrupt settings prevent the Express Gate environment from launching properly.

The rst time wizard will run again when you enter the Express Gate environment after

clearing its settings.

2.7.3 AI NET 2

Check Realtek LAN cable [Disabled]

Enables or disables checking of the Realtek LAN cable during the Power-On Self-Test

(POST). Conguration options: [Disabled] [Enabled]

2.8 Exit menu

The Exit menu items allow you to load the optimal or failsafe default values for the BIOS
items, and save or discard your changes to the BIOS items.

Main Advanced Power Boot Tools Exit

Exit Options

Exit & Save Changes

Exit & Discard Changes
Discard Changes

Load Setup Defaults

BIOS SETUP UTILITY

Exit system setup
after saving the
changes.

F10 key can be used
for this operation.

Pressing <Esc> does not immediately exit this menu. Select one of the options from this
menu or <F10> from the legend bar to exit.

ASUS AT3N7A-I 2-15