Asus A7V266-E, A7V266-AA User Manual

®

A7V266-E

JumperFree™ DDR DRAM

266MHz FSB AGP Pro/4X

Socket A Motherboard

USER’S MANUAL

USER'S NOTICE

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”).

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 DIRECT ORS, 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.

Product warranty or service will not be extended if: (1) the product is repaired, modified or altered,
unless such repair, modification of alteration is authorized in writing by ASUS; or (2) the serial
number of the product is defaced or missing.

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 identification or explanation and to
the owners’ benefit, without intent to infringe.

• Intel and Pentium are registered trademarks of Intel Corporation.

• VIA is a registered trademark of VIA Technologies, Inc.

• 3Com is a registered trademark of 3Com Corporation.

• C-Media is a registered trademark of C-Media Electronics Inc.

• Windows and MS-DOS are registered trademarks of Microsoft Corporation.

• Adobe and Acrobat are registered trademarks of Adobe Systems Incorporated.

• Trend and ChipAwayVirus are trademarks of Trend Micro, Inc.

• Symbios is a registered trademark of Symbios Logic Corporation.
The product name and revision number are both printed on the product itself. Manual revisions are

released for each product design represented by the digit before and after the period of the manual
revision number. Manual updates are represented by the third digit in the manual revision number.

For previous or updated manuals, BIOS, drivers, or product release information, contact ASUS at
http://www.asus.com.tw or through any of the means indicated on the following page.

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 MA Y APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND
SOFTWARE DESCRIBED IN IT.

Copyright © 2001 ASUSTeK COMPUTER INC. All Rights Reserved.

Product Name: ASUS A7V266-E
Manual Revision: 1.00 E883
Release Date: October 2001

2

ASUS A7V266-E User’s Manual

ASUS CONTACT INFORMATION

ASUSTeK COMPUTER INC. (Asia-Pacific)

Marketing

Address: 150 Li-Te Road, Peitou, Taipei, Taiwan 112
Telephone: [phone]
Fax: [phone]
Email: [e-mail]

Technical Support

MB/Others (Tel): [phone] (English)
Notebook (Tel): [phone] (English)
Desktop/Server (Tel): [phone] (English)
Fax: [phone]
Email: [e-mail]
WWW: www.asus.com.tw
FTP: ftp.asus.com.tw/pub/ASUS

ASUS COMPUTER INTERNATIONAL (America)

Marketing

Address: 6737 Mowry Avenue, Mowry Business Center, Building 2

Newark, CA 94560, USA
Fax: [phone]
Email: [e-mail]

Technical Support

Fax: [phone]
Email: [e-mail]
WWW: www.asus.com
FTP: ftp.asus.com/Pub/ASUS

ASUS COMPUTER GmbH (Europe)

Marketing

Address: Harkortstr. 25, 40880 Ratingen, BRD, Germany
Fax: [phone]
Email: [e-mail] (for marketing requests only)

Technical Support

Hotline: MB/Others: [phone] Notebook: [phone]
Fax: [phone]
Support (Email): www.asuscom.de/de/support (for online support)
WWW: www.asuscom.de
FTP: ftp.asuscom.de/pub/ASUSCOM

ASUS A7V266-E User’s Manual 3

CONTENTS

1. INTRODUCTION ............................................................................. 7

1.1 How This Manual Is Organized ................................................... 7

1.2 Item Checklist .............................................................................. 7

2. FEATURES ........................................................................................ 8

2.1 ASUS A7V266-E Motherboard ................................................... 8

2.1.1 Specifications ..................................................................... 8

2.1.2 Performance...................................................................... 10

2.1.3 Intelligence ....................................................................... 11

2.2 Motherboard Components.......................................................... 12

2.2.1 Component Locations....................................................... 13

3. HARDWARE SETUP ...................................................................... 14

3.1 Motherboard Layout .................................................................. 14

3.2 Layout Contents ......................................................................... 15

3.3 Hardware Setup Procedure......................................................... 17

3.4 Motherboard Settings ................................................................. 17

3.5 System Memory ......................................................................... 25

3.5.1 DDR DIMM Support........................................................ 25

3.5.1 General DIMM Notes....................................................... 26

3.5.2 Memory Installation ......................................................... 26

3.6 Central Processing Unit (CPU) .................................................. 27

3.7 Expansion Cards ........................................................................ 28

3.7.1 Installing an Expansion Card ........................................... 28

3.7.2 Assigning IRQs for Expansion Cards .............................. 29

3.7.3 Accelerated Graphics Port (AGP) Pro Slot ...................... 30

3.7.4 Advanced Communication Riser (ACR) Slot .................. 30

3.8 Connectors ................................................................................ 31

3.8.1 External Connectors ......................................................... 31

3.9 Starting Up the First Time.......................................................... 44

4. BIOS SETUP..................................................................................... 45

4.1 Managing and Updating Your BIOS .......................................... 45

4.1.1 Upon First Use of the Computer System.......................... 45

4.1.2 Updating BIOS Procedures .............................................. 47

4.2 BIOS Setup Program.................................................................. 49

4.2.1 BIOS Menu Bar................................................................ 50

4.2.2 Legend Bar ....................................................................... 50

4

ASUS A7V266-E User’s Manual

CONTENTS

4.3 Main Menu ................................................................................. 52

4.3.1 Primary & Secondary Master/Slave ................................. 53

4.3.2 Keyboard Features............................................................ 56

4.4 Advanced Menu ......................................................................... 58

4.4.1 Chip Configuration........................................................... 62

4.4.2 I/O Device Configuration ................................................. 65

4.4.3 PCI Configuration ............................................................ 67

4.5 Power Menu ............................................................................... 69

4.5.1 Power Up Control............................................................. 71

4.5.2 Hardware Monitor ............................................................ 73

4.6 Boot Menu ................................................................................. 74

4.7 Exit Menu................................................................................... 76

5. SOFTWARE SETUP....................................................................... 79

5.1 Install Operating System............................................................ 79

5.2 Start Windows............................................................................ 79

5.3 A7V266-E Motherboard Support CD ........................................ 80

5.3.1 Installation Menu.............................................................. 80

5.4 Using the Promise Chip for RAID 0 or 1................................... 82

6. SOFTWARE REFFERENCE......................................................... 91

6.1 Winbond Smart Manager ........................................................... 91

6.2 ASUS PC Probe ......................................................................... 95

6.3 Multi-Channel Audio Feature Setup......................................... 100

6.4 ASUS Live Update................................................................... 102

6.5 3Deep Color Tuner................................................................... 103

6.6 CyberLink PowerPlayer SE ..................................................... 105

6.7 CyberLink V ideoLive Mail ...................................................... 106

7. APPENDIX..................................................................................... 109

7.1 Modem Riser............................................................................ 109

7.1.1 56K Software Modem .................................................... 109

7.1.2 Primary/Seconday MR ................................................... 109

7.1.3 Hardware Installation Procedure .................................... 109

7.1.4 Software Setup in Windows 98 ...................................... 110

7.2 Glossary ................................................................................... 111

INDEX ................................................................................................. 115

ASUS A7V266-E User’s Manual 5

FCC & DOC COMPLIANCE

Federal Communications Commission Statement

This device complies with FCC Rules Part 15. 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:

• Re-orient 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.

W ARNING! Any changes or modifications to this product not expressly approved

by the manufacturer could void any assurances of safety or performance and
could result in violation of Part 15 of the FCC Rules.

Reprinted from the Code of Federal Regulations #47, part 15.193, 1993. Washington DC: Office of the
Federal Register, National Archives and Records Administration, U.S. Government Printing Office.

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.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

6

ASUS A7V266-E User’s Manual

1. INTRODUCTION

1.1 How This Manual Is Organized

This manual is divided into the following sections:

1. INTRODUCTION Manual information and checklist

2. FEATURES Production information and specifications

3. HARDWARE SETUP Instructions on setting up the motherboard.

4. BIOS SETUP Instructions on setting up the BIOS

5. SOFTWARE SETUP Instructions on setting up the included software

6. SOFTWARE REFERENCE Reference material for the included software

7. APPENDIX Optional items and general reference

1.2 Item Checklist

Check that your package is complete. If you discover damaged or missing items,
contact your retailer.

Manual / Checklist

1. INTRODUCTION

Package Contents

(1) ASUS Motherboard
(1) 40-pin 80-conductor ribbon

cable for internal
UltraDMA100/66//33 IDE
drives

(1) Ribbon cable for two 3.5”

floppy disk drives

(1) ASUS Support CD with drivers

and utilities
(1) Bag of spare jumper caps
(1) ASUS 2-port USB Connector

Set
(1) User’s Manual

Optional Items

ASUS IrDA-compliant infrared
module

ASUS A7V266-E User’s Manual 7

2.1 ASUS A7V266-E Motherboard

The ASUS A7V266-E motherboard is the perfect answer for home PCs, workstations
and servers. The A7V266-E is powered by the AMD
and is bundled with advanced features to provide superlative performance.

2.1.1 Specifications

• AMD® Athlon™/ Athlon XP™ and Duron™ Processor Support

2. FEATURES

Specifications

• North Bridge System Chipset: Features the VIA

• South Bridge System Chipset: VIA

• PC2100 / PC1600 DDR Support: Equipped with three Double Data Rate Dual

2. FEATURES

®

Athlon™/Duron™ processor

®

KT266A North Bridge that

supports AGP 4X/2X mode, 133/100MHz Front Side Bus (FSB), and
266/200MHz memory bus.

®

VT8233 integrated peripheral controller

supports UltraDMA/100/66/33 for burst mode data transfer rates of up to 100MB/
sec, and USB controller with three root hubs for six USB ports.

Inline Memory Module (DDR DIMM) sockets to support up to 3GB of DDR
DRAM. DDR DRAM is the newest memory standard with the highest bandwidth
and lowest latency currently available and dramatically improves the memory
system’s ability to service, among others, high multimedia requirements. (Caution:
Do not attempt to use SDRAM modules.)

• JumperFree™ Mode: Allows processor settings and easy overclocking of

frequency and Vcore voltage through BIOS. Easy-to-use DIP switches come
with the motherboard board to allow manual adjustment of the processor external/
internal frequency.

• UltraDMA/100 Support: Comes with an onboard PCI Bus Master IDE controller

with two connectors that support four IDE devices on two channels. Supports
UltraDMA/100, UltraDMA/66, UltraDMA/33, PIO Modes 3 & 4, Bus Master
IDE DMA Mode 2, and Enhanced IDE devices, such as DVD-ROM, CD-ROM,
CD-R/RW, LS-120, and Tape Backup drives.

• Super Multi-I/O: The multi-I/O chipset offers complete support for a variety of

I/O functions. Provides two high-speed UART compatible serial ports and one
parallel port with EPP and ECP capabilities. UART2 can also be directed from
COM2 to the Infrared Module for wireless connections. The Super I/O controller
also supports a floppy disk drive, PS/2 keyboard, and PS/2 mouse.

®

• Promise

and Ultra DMA/100 data transfer speeds. The chip also delivers reliable
redundancy and stable performance for RAID levels 0 or 1. Data “striping,” or
RAID 0, improves speed performance as I/O tasks are spread between two hard
disk drives. Data “mirroring,” or RAID 1, improves system fault tolerance as
the protocol optimizes two identical hard disks to write data to each other.

chip: The Promise IDE controller chip supports the AT A-100 protocol

8

ASUS A7V266-E User’s Manual

2. FEATURES

• Smart BIOS: 2Mb firmware enables Vcore and CPU/DDR SDRAM frequency

adjustments, boot block write protection, and HD/SCSI/MO/ZIP/CD/Floppy boot
selection.

2.1.2 Connections

• CPU socket: Socket A (462) for AMD® processors.

• PCI Expansion Slots: Provides five 32-bit Legacy Free PCI slots, (PCI 2.2

compliant) with no ISA, eliminating bottlenecks and system memory
management issues. All PCI slots can support Bus Master PCI cards, such as
SCSI or LAN cards. (PCI supports up to 133MB/s maximum throughput.) Th e
MB supports Concurrent PCI, which allows multiple PCI transfers from PCI
master bus to the memory and processor.

• IDE connectors: Dual-channel bus master IDE connectors support up to four

Ultra DMA/100/66, PIO Modes 3 & 4 IDE devices like two HDDs, one DVD
and an R/W CD.

• AGP Pro Slot: Comes with an Accelerated Graphics Port Pro slot that

supports AGP cards for high performance, component level interconnect
targeted at 3D graphical applications using a 4X mode bus. The slot is keyed to
support only the latest 1.5 volt AGP cards.

Specifications

2. FEATURES

• Floppy disk connector: Supports the floppy disk drive.

• Wake-On-LAN: Supports Wake-On-LAN activity through an optional ASUS

PCI-L101 10 /100 Fast Ethernet PCI card.

• Wake-On-Ring: Supports Wake-On-Ring activity through a PCI modem card.

• Smartcard Reader Connector: Supports a PS/SC compatible Smart Card

• USB ports: Four Universal Serial Bus (USB) ports are available for connecting

USB devices such as a mouse and PDA.

• Serial ports: Two 9-pin COM1/COM2 ports are for all serial devices.

• IrDA: Supports an optional infrared port module for a wireless interface.

• Microphone: Pink jack connects a microphone (or 6 channel speaker).

• Line In: Light blue jack connects a tape player (or 6 channel speaker).

• Line Out: Lime jack connects a headphone, a speaker (or 6 channel speaker).

• Game/MIDI connector. This connector supports a joystick or a game pad for

playing games, and MIDI devices for playing or editing audio files.

• Parallel port: 25-pin port connects a parallel printer or other devices.

• PS/2 mouse port: Green 6-pin connector is for a PS/2 mouse.

• PS/2 keyboard port: Purple 6-pin connector is for a PS/2 keyboard.

• Onboard LED: Signals AC power is okay.

• ATX power connector. Supplies the MB with ATX 12V power. The power

supply must have at least 1A on the +5V standby lead (+5VSB).

ASUS A7V266-E User’s Manual 9

2. FEATURES

Performance

2. FEATURES

2.1.2 Performance

• DDR DRAM Optimized Performance: This motherboard supports a new

generation memory , Double Data Rate (DDR) Dynamic Random Access Memory
(DDR DRAM). This new memory technology increases performance by
executing two actions per clock cycle, resulting in data transfer rates of up to 2.1
GB/s for 133MHz DDR SDRAM and 1.6GB/s for 100MHz DDR SDRAM.

• Onboard Audio: Audio models come with the six-channel C-Media CMI8738

PCI audio controller that supplies HRTF 3D positional audio functions. The
chip supports software access to PC DVD 5.1/6.1 and AC-3/DTS via SPDIF.
Other integrative featues include: full DVD playback, PCtel 56K modem, and
even Karaoke echo effects. The chip offers 24-bit SPDIF digital recording and
playback with additional support for legacy audio SBPRO™ and FM emulator/
DLS wavetable music synthesis. A software package helps setup the multi­channel PC sound system.

• ACPI Ready: Advanced Configuration Power Interface (ACPI) provides more

Energy Saving Features for operating systems that support OS Direct Power
Management (OSPM) functionality. With these features employed in the OS,
PCs can be ready around the clock but comply with energy saving standards. To
fully utilize the ACPI benefits, use an ACPI-supported OS such as Windows 98.

• Smartcard Reader Connector: This connector that provides the convenience

of PS/SC compatible Smart Card security plus support for a multitude of new
financial, telephonic, and mobile access services.

• PC’99 Compliant: Both the BIOS and hardware levels of ASUS smart series

motherboards are PC’99 compliant. The new PC’99 requirements for systems
and components are based on the following high-level goals: Support for Plug­n-Play compatibility and power management for configuring and managing all
system components, and 32-bit device drivers and installation procedures for
Windows95/98/NT . Color-coded connectors and descriptive icons make
identification easy as required by PC’99.

• High-Speed Data Transfer Interface: Support for UltraDMA/100 through the

onboard IDE bus master controller triples the UltraDMA/33 burst transfer rate.
UltraDMA/100 is backward compatible with DMA/66, DMA/33, and other
existing DMA devices to save the need to upgrade current EIDE/IDE drives.
(UltraDMA/66 requires a 40-pin 80-conductor cable).

• Concurrent PCI: Concurrent PCI allows multiple PCI transfers from PCI master

busses to the memory and processor.

10

ASUS A7V266-E User’s Manual

2. FEATURES

2.1.3 Intelligence

• Auto Fan Off: The system fans powers off automatically even in sleep mode.

This function reduces both energy consumption and system noise, and is an
important feature in implementing silent PC systems.

• Dual Function Power Button: Pushing the power button for less than 4 seconds

when the system is in the working state places the system into one of two states:
sleep mode or soft-off mode, depending on the BIOS or OS setting (See PWR
Button < 4 Secs in 4.5 Power Menu). When the power button is pressed for
more than 4 seconds, the system enters the soft-off mode regardless of the BIOS
setting.

• Fan Status Monitoring and Alarm: To prevent system overheat and system

damage, the CPU and system fans can be monitored for RPM and failure. All
fans are set for its normal RPM range and alarm thresholds.

• Power LED (requir es ACPI OS support): The power LED indicates the system

status.

• Remote Ring-On (requires modem): This allows a computer to be turned on

remotely through an internal or external modem. With this benefit on-hand, users
can access vital information from their computers anywhere.

Intelligence

2. FEATURES

• Temperature Monitoring and Alert: CPU temperature is monitored by the

ASUS ASIC through the CPU’s internal thermal diode (on Pentium III and
Celeron) to prevent system overheat and system damage.

• Voltage Monitoring and Alert: System voltage levels are monitored to ensure

stable voltage to critical motherboard components. Voltage specifications are
more critical for future processors, so monitoring is necessary to ensure proper
system configuration and management.

• Chassis Intrusion Detection: Supports chassis-intrusion monitoring through

the ASUS ASIC. A chassis intrusion event is kept in memory on battery power
for more protection.

ASUS A7V266-E User’s Manual 11

2. FEATURES

2.2 Motherboard Components

See opposite page for locations.

®

Processor Support Socket A for AMD

Feature Setting DIP Switches ................................................... 3

Athlon™ and Duron™ Processors.............. 2

Location

M/B Components

2. FEATURES

Expansion Slots 5 PCI Slots .............................................................................. 17

Chipsets VIA

Main Memory Maximum 3GB support

System I/O 1 Floppy Disk Drive Connector ............................................. 12

®

KT266A North Bridge .................................................... 1

®

VIA

VT8233 South Bridge ................................................... 11

Promise IDE / RAID controller ................................................ 8

ASUS System Monitor controller ............................................ 9

Multi-I/O controller ................................................................ 20

2Mbit Programmable Flash EEPROM ................................... 19

3 DDR DIMM Sockets ............................................................. 4

1 Accelerated Graphics Port (AGP) Pro/4X Slot ................... 22

1 Advanced Communication Riser......................................... 14

2 IDE Connectors (UltraDMA/100 / RAID Support) .............. 6

2 IDE Connectors (UltraDMA/100 Support) ........................... 7

1 ASUS iPanel Connector ...................................................... 10

1 Smart Card Connector ......................................................... 18

1 Parallel Port ............................................................... (Top) 25

2 Serial Ports (COM1/COM2) ......................... (Bottom) 24, 26

USB Connectors (Port 0 & Port 1) ........................ (Bottom) 27

USB Connectors (Ports 2/3/4/5) ............................................. 13

1 PS/2 Mouse Connector .............................................. (Top) 28

1 PS/2 Keyboard Connector ................................... (Bottom) 28

Hardware Monitoring System Voltage Monitoring (integrated in ASUS ASIC) ......... 9

Special Feature Onboard LED ......................................................................... 21

Audio Features (on audio models only)

CMI8738 6-Channel Audio Controller Chipset ..................... 15

1 ASUS iPanel Audio Connector............................................ 16

1 Game/MIDI Port........................................................ (Top) 23

1 Line Out Connector ..................................... (Bottom, left) 23

1 Line In Connector................................... (Bottom, center) 23

1 Microphone Connector ............................. (Bottom, right) 23

Internal Audio Connectors

Power ATX Power Supply Connector ................................................. 5

Form Factor ATX

12

ASUS A7V266-E User’s Manual

2. FEATURES

2.2.1 Component Locations

28
27

26

25

24

23

15

27

3

4

6

2. FEATURES

Motherboard Parts

22
21

20
19

18
17

16

15
14

9

1213

1011

8

ASUS A7V266-E User’s Manual 13

3. HARDWARE SETUP

3.1 Motherboard Layout

24.5cm (9.64in)

VID4

PS/2

T: Mouse
B: Keyboard

USB1
USB2

COM1

KBWK

USB01_PWR

DSW

CPU_RATIO

Socket 462

VID3
VID2
VID1

01

01

PALO_FREQ

01

THEMCPU

Motherboard Layout

3. H/W SETUP

COM2

Line
Out

Line

In

Mic

In

GAME_AUDIO

LED

AUX

BCS

SPDIF OUT

PARALLEL PORT

JP1
JP2

Super

I/O

2Mb

BIOS

HPHOME

AAPANEL

MODEM

CDSPDIF IN

CPU_FAN
PWR_FAN

MIC2

C-Media

CMI8738 6CH

Audio Controller

VIA

KT266A

Chipset

Accelerated Graphics Port (AGP Pro)

PCI 1

PCI 2

SMARTCARD

PCI 3

CD

PCI 4

PCI 5

ACR

A7V266-E

DDR DIMM1 (64/72 bit, 184-pin module)

0 1

DSW

SYSCLK

CR2032 3V
Lithium Cell

CMOS Power

ACRUSB

SMB_CON

USB2_3

PR0MISE IDE2

DDR DIMM2 (64/72 bit, 184-pin module)

DDR DIMM3 (64/72 bit, 184-pin module)

2 3

4 5

ATX Power Connector

Primary IDE

PROMISE

IDE

Controller

VIA

VT8233

Chipset

CLR_RTC

FLOPPY

CHASSIS

CHA
USB45_PWR
USB23_PWR

USB4_5

CHA_FAN

IR_CON

AFPANEL

ASUS

ASIC

with Hardware

Monitor

IDELED

PANEL

PR0MISE IDE1

Secondary IDE

RAID / IDE

30.5cm (12.0in)

JTPWR

JEN

14

ASUS A7V266-E User’s Manual

3. HARDWARE SETUP

3. HARDWARE SETUP

3.2 Layout Contents

Motherboard Settings

1) JEN p. 18 JumperFree Mode Setting (Disable / Enable)

2) DIP_SW p. 19 CPU External Frequency Selection (Switches 1–4)

3) DSW p. 20 Manual CPU Ratio Settings (Switches 1-5)

4) PALO_FREQ p. 20 FID setting (FID0-3)

5) JP1, JP2 p. 20 I/O Voltage Settings (2.5V/2.65V/2.75V/2.8V)

6) VID1, 2, 3, 4 p. 21 Voltage Regulator Output Volt. Setting (1.675V-1.85 V)

7) CENTER/BASS, p. 21 Bass Center Setting (Type 1 or Type 2)
BASS/CENTER

8) KBWK p. 22 Keyboard Power Up (Enable / Disable)

9) ACRUSB1, ACRUSB2 p. 22 ACR/USB Selection (USB to Conn. / USB on ACR)

10) USB01, 23, 45_PWR p. 23 Three USB Device Wake-ups (+5V / +5VSB)

11) JP2601 p. 23 IDE Channel Setting (ATA100 or RAID 1/0)

12) CLR_RTC p. 24 Clear RTC RAM (2 pin contact)

13) THEMCPU p. 24 Thermal Sensor CPU Setting (Athlon-Duron / Reserved)

Expansion Slots/Sockets

1) DIMM 1/2/3 p. 25 System Memory Support

2) Socket 462 p. 27 CPU Support

3) PCI 1/2/3/4/5 p. 28 32-bit PCI Bus Expansion Slots

4) AGP Pro p. 30 Accelerated Graphics Port Slot

5) ACR Slot p. 30 Advanced Communication Riser Slot

Connectors

1) PS2KBMS p. 31 PS/2 Mouse Port (6 pin female)

2) PS2KBMS p. 31 PS/2 Keyboard Port (6 pin female)

3) USB p. 32 Universal Serial Bus Ports 1 & 2 ( T w o 4 pin female)

4) PRINTER p. 32 Parallel Port (25 pin female)

5) COM1/COM2 p. 32 Serial Ports (9 pin /10-1 pin male)

6) GAME_AUDIO p. 33 Game/MIDI Port (15-pin female) (optional)

7) AUDIO p. 33 Audio Connectors (Three 1/8” AUDIO) (optional)

8) IDELED p. 34 IDE Activity LED (2 pin)

3. H/W SETUP

Layout Contents

9) FLOPPY p. 34 Floppy Disk Drive Connector (34 pin)

10) PRIMARY / SEC. IDE p. 35 IDE Connectors (Two 40-1 pin)

11) CPU/PWR/CHA_FAN p. 36 CPU, Power, and Chassis Fan Connectors (Three 3 pin)

12) USB2_3 / USB4_5 p. 36 USB Headers (10-1 pin)

13) IR_CON p. 37 Standard Infrared Module Connector (10-1 pin)

14) AFPANEL p. 37 ASUS iPanel Connector (12-1 pin)

15) ATXPWR p. 38 ATX Power Supply Connector (20 pin)

ASUS A7V266-E User’s Manual 15

3. HARDWARE SETUP

16) SMB p. 38 SMBus Connector (5-1 pin)

17) CD/AUX/MODEM p. 39 Internal Audio Connectors (Three 4-1 pin) (optional)

18) MIC2 p. 39 Internal Microphone Connector (3 pin) (optional)

19) HPHONE p. 40 Headphone Line Out connector (3 pin) (optional)

20) JTPWR p. 40 Power Supply Thermal Sensor (2 pin)

21)

22) CHASSIS p. 41 Chassis Intrusion Lead (2 pin)

23) AAPANEL p. 42 ASUS iPanel Audio Connector (10-1 pin)

24) SMARTCON p. 42 ASUS SmartCard Connector (14-1 pin)

25)

26) KEYLOCK

27) SPEAKER (PANEL) p. 43 System Warning Speaker Lead (4 pin)

28) MSG.LED (PANEL) p. 43 System Message LED Lead (2 pin)

29) SMI (PANEL) p. 43 System Management Interrupt Lead (2 pin)

Layout Contents

3. H/W SETUP

30) PWR.SW (PANEL) p. 43 ATX / Soft-Off Switch Lead (2 pin)

31) RESET (PANEL) p. 43 Reset Switch Lead (2 pin)

SPDIFOUT / CDSPDIFIN

PWR.LED (

PANEL

(

PANEL)p. 43 System Keyboard Lock Switch Lead (2 pin)

p. 41 Digital audio Interfaces (2 pin) (optional)

)

p. 43 System Power LED Lead (3 pin)

16

ASUS A7V266-E User’s Manual

3. HARDWARE SETUP

3.3 Hardware Setup Procedure

Complete the following steps before using your computer:

1. Check motherboard settings

2. Install memory modules

3. Install the Central Processing Unit (CPU)

4. Install Expansion Cards

5. Connect ribbon cables, panel wires, and power supply cables

6. Configure the BIOS parameter settings

3.4 Motherboard Settings

This section tells you how to change motherboard function settings through the
switches and/or jumpers.

W ARNING! Computer motherboards and expansion cards contain very delicate

Integrated Circuit (IC) chips. To avoid damaging them due to static electricity,
follow these precautions whenever you work on your computer.

1. Unplug the computer when working on the internal components.

2. Use a grounded wrist strap or touch a safely grounded object or to a metal
object, such as the power supply case, before handling computer components.

3. Hold components by the edges and try not to touch the IC chips on them.

4. Whenever you uninstall any component, place the components on a grounded
antistatic pad or in the bag that came with the components.

5. Before you install or remove any component, ensur e that the A TX 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, and/or components.
(TIP: When lit, the onboard LED indicates that the system is in suspend or
soft-off mode, not powered OFF. See illustration below.)

010101

LED

3. H/W SETUP

Motherboard Settings

A7V266-E

A7V266-E Onboard LED

ASUS A7V266-E User’s Manual 17

ON

Standby

Power

OFF

Powered

Off

3. HARDWARE SETUP

Motherboard Frequency Settings (DIP Switches)

The motherboard frequency is adjusted through the DIP switches. The white block
represents the switch’s position. The illustration below shows all the switches in the

OFF position.

A7V266-E DIP Switch

Motherboard Settings

3. H/W SETUP

1) JumperFree™ Mode (JEN)

This jumper allows you to enable or disable the JumperFree™ mode. The
JumperFree™ mode allows processor settings to be made through the BIOS
setup (see 4.4 Advanced Menu).

Setting JEN

Enable (JumperFree) [2-3] (default)
Disable (Jumper Mode) [1-2]

A7V266-E

010101

CPU_RATIO

ON

12345

SYSCLK

ON

1234

ON
OFF

ON
OFF

010101

A7V266-E

A7V266-E Jumper Mode Setting

12

Jumper Mode

JEN

CPU_RATIO

SYSCLK

ON

12345

ON

1234

2

3

Jumper Free

(Default)

ON
OFF

ON
OFF

NOTE: In JumperFree™ mode, set all DIP switches (DIP_SW) to OFF.

18

ASUS A7V266-E User’s Manual

3. HARDWARE SETUP

2) CPU External Frequency Selection (DIP_SW Switches 1–4)

This option tells the clock generator what frequency to send to the CPU, DRAM,
and the PCI bus. This allows the selection of the CPU’s External frequency (or
BUS Clock). The BUS Clock multiplied by the Frequency Multiple equals the
CPU’s Internal frequency (the advertised CPU speed).

010101

SYSCLK

ON

1234

ON

1234

ON

1234

ON

1234

A7V266-E

CPU
AGP
PCI

100MHz

60.67MHz

33.33MHz

133.33MHz

66.67MHz

33.33MHz

140MHz

70MHz
35MHz

(JumperFree Mode)

A7V266-E CPU External
Frequency Selection

W ARNING! Set the CPU frequency only to the recommended settings. Frequencies

other than the recommended CPU bus frequencies are not guaranteed to be stable.
Overclocking the processor is not recommended. It may result in a slower speed.

3) Manual CPU Ratio Settings (DSW Switches 5-10)

Set DSW switches (5-10) to use the clock multiplier to coordinate the ratio of
bus speeds with CPU settings. Set the DSW switches according to the internal
speed of your processor and the bus frequency (133/100MHz).

IMPORTANT:

1. To use this feature, JEN must be set to Jumper Mode, [1-2].

(See 1, JumperFree™ Mode (JEN) in 3, HARDWARE SETUP.)

2. When JumperFree mode is enabled, use BIOS setup in place of these switches.

(Set Operating Frequency Setting to User Define under 4.4 Advanced Menu
in BIOS Setup so you can set the CPU Frequency.)

CPU_RATIO

3. H/W SETUP

Motherboard Settings

010101

A7V266-E

A7V266-E CPU External
Clock (BUS) Frequency
Selection

ASUS A7V266-E User’s Manual 19

ON

12345

CPU_RATIO 8X

ON

12345

CPU_RATIO 10X 10.5X

ON

12345

8.5X 9X 9.5X

ON

12345

ON

12345

ON

12345

(JumperFree Mode)

ON

12345

3. HARDWARE SETUP

4) CPU Type Frequency Setting (PALO_FREQ)

This jumper setting accomodates the difference between the internal frequency
between standard and new AMD CPUs. If changing from one type of CPU to
another, the jumper caps must be adjusted. The factory default setting, [2-3], is
for standard Athlon/Duron CPUs. The Palomino processor will only function
on this motherboard after the jumpers are adjusted to [1-2].

Motherboard Settings

3. H/W SETUP

A7V266-E PALO_FREQ Setting

5) I/O Voltage Settings (JP1, JP2)

These jumpers allow you to select the voltage supplied to the DRAM, chipset,
AGP, and PCI. The default setting for the jumpers is: JP1 [2-3] and JP2 [1-2],

2.65 volts. Use the default setting for better system reliability.

A7V266-E

010101

PALO_FREQ

FID0
FID1
FID2
FID3

PALOMINO

321

FID0
FID1
FID2
FID3

ATHLON/DURON

(Default)

321

20

010101

A7V266-E

A7V266-E Voltage Setting

ASUS A7V266-E User’s Manual

JP1
JP2

JP1/JP2

323

2

1

2.5V 2.65V

23

1

(Default)

1

2.75V 2.8V

1

23

3. HARDWARE SETUP

6) Voltage Regulator Output Setting (VID1, VID2, VID3, VID4)

This jumpers allow you to manually adjust the CPU core voltage. It is
recommended to use CPU Default as the CPU core voltage. CPU Default, all
jumpers [2-3], means the Vcore is generated according to the CPU VID
configuration. For each jumper setting, there are two voltage options,
depending on the CPU used.

321

1.8/1.775Volts
321

1.7/1.675Volts

A7V266-E

010101

VID4
VID3
VID2
VID1

CPU Default

VID4
VID3

321

VID2
VID1

VID4
VID3
VID2
VID1

321

1.85/1.825Volts
321

1.75/1.725Volts

A7V266-E CPU Core Voltage
Selection

7) Bass Center Setting (CENTER/BASS, BASS/CENTER)

Use these jumpers in conjunction with the C-Media PCI Audio Driver and to
adjust output for 4 or 6 speaker audio. No audio standard exists for the three
pick-up surfaces on male audio jacks, therefore it may be necessary to switch
jumpers from the default position, type 1, to type 2, in order to help reroute
signals among the internal leads in the Line-In, Line-Out, Mic female sockets.
Make sure a test is made using the C-Media Audio Driver software setup available
on the Support CD.

3. H/W SETUP

Motherboard Settings

010101

A7V266-E

A7V266-E Bass Center
Setting

ASUS A7V266-E User’s Manual 21

BCS

12

type 1 Bass

(CENTER/BASS) (BASS/CENTER)

(Default)

23

type 2 Bass

3. HARDWARE SETUP

8) Keyboard Wake Up (KBWK)

This allows you to disable or enable the keyboard power up function. Set this
jumper to Enable if you wish to use your keyboard (by pressing <Spacebar>) to
power up your computer. This feature requires an ATX power supply that can
supply at least 300mA on the +5VSB lead. The default is set to Enable. (The
computer will not power ON if you set this to Enable but do not have the correct
ATX power supply. NOTE: This jumper must be set in conjunction with W ake

On PS2 KB/PS2 Mouse/CIR in 4.5.1 Power Up Control.
Setting KBWK

Enable [1-2] (default)
Disable [2-3]

Motherboard Settings

3. H/W SETUP

A7V266-E Keyboard Wake Up

9) ACR/USB Selection (ACRUSB1, ACRUSB2) (audio models only)

When set to pins 1-2, these jumpers allow you to activate USB port 3. Setting
the jumpers to pins 2-3 activates the Advanced Communication Riser (ACR)
slot. The default setting for both jumpers is 1-2. (NOTE: The USB port 2 is
always active regardless of the setting of these jumpers.)

IMPORTANT! Always set both jumpers accordingly when selecting a device.

A7V266-E

010101

2

1

Enable

(Default)

KBWK

23

Disable

22

010101

A7V266-E

A7V266-E USB/ACR Selection

ASUS A7V266-E User’s Manual

ACRUSB

12

USB to Conn.

23

USB on ACR

3. HARDWARE SETUP

10) USB Device Wake-up (USB01_PWR/USB23_PWR/USB45_PWR)

Set these jumpers to +5V to allow wake up from the S1 sleep state (CPU stopped;
RAM refreshed; system running in low power mode) using the connected USB
devices. Set to +5VSB to allow wake up from S3 sleep state (no power to CPU;
RAM in slow refresh; power supply in reduced power mode). The default setting
for the three jumpers is 1-2 to select +5V (because not all computers have the
appropriate power supply).

NOTES:

1. This feature requires an ATX power supply that can supply at least 2A on
the +5VSB lead when these jumpers are set to +5VSB. Otherwise, the
system does not power up.

2. The total current consumed must NOT exceed the power supply capability
(+5VSB) whether under normal working conditions or in sleep mode.

010101

A7V266-E

A7V266-E USB Device Wake Up

12 23

USB01_PWR

+5V +5VSB

1

+5V

2

USB23_PWR
USB45_PWR

2

3

+5VSB

11) IDE Channel Setting for ATA100 or RAID 0/1 (JP2601)

These jumpers enable the ATA100 IDE Controller, or the IDE RAID
controller function. The default setting enables ATA100.

Setting JP2601

Enable AT A100 [1-2] (default)
Enable RAID 0/1 [2-3]

3. H/W SETUP

Motherboard Settings

010101

2
1

A7V266-E

(Default)

A7V266-E A TA100/RAIDO Selection

ASUS A7V266-E User’s Manual 23

JP2601

3
2

RAID0/1ATA100

12) Clear RTC RAM (2-pin CLR_RTC)

This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS.
Y ou can clear the CMOS memory of date, time, and system setup parameters by
erasing the CMOS R TC RAM data. The RAM data in CMOS, that include system
setup information such as system passwords, is powered by the onboard button
cell battery.
To erase the RTC RAM:

1. Turn OFF the computer and unplug the power cord.

2. Remove the battery.

3. Short the jumper by removing and replacing the jumper cap.

4. Re-install the battery.

5. Plug the power cord and turn ON the computer.

6. Hold down the <Del> key during the boot process and enter BIOS setup
to re-enter data.

Motherboard Settings

3. H/W SETUP

3. HARDWARE SETUP

010101

CR2032 3V

Lithium Cell

CMOS Power

A7V266-E

A7V266-E Clear RTC RAM

CLRTC

Remove and then
replace the jumper cap.

13) Thermal Sensor CPU Setting (2-pin THEMCPU)

This jumper selects the type of CPU and coordinates its thermal sensory capability .
The default setting, [1-2], is for Athlon/Duron and, [2-3], is for Reserve type
processors.

010101

A7V266-E

THEMCPU

3221

RESERVEDATHLON/DURON

(Default)

24

A7V266-E THEMCPU Setting

ASUS A7V266-E User’s Manual

3. HARDWARE SETUP

3.5 System Memory

This motherboard features three Double Data Rate (DDR) Dual Inline Memory
Module sockets.

3.5.1 DDR DIMM Support

The three DDR DIMM sockets support 2.5Volt (power level) unbuffered/registered
Double Data Rate Synchronous Dynamic Random Access Memory (DDR SDRAM)
of 64MB, 128MB, 256MB, 512MB, and 1GB to form a memory size between 64MB
to 3GB. One side (with memory chips) of the DIMM takes up one row on the
motherboard. DDR DIMMs support non-ECC memory (used on desktops/laptops).

Install memory in any combination as follows:

DIMM Location 184-pin DDR DIMM Total Memory

Socket 1 (Rows 0&1) 64MB, 128MB, 256MB, 512MB, 1GB x1
Socket 2 (Rows 2&3) 64MB, 128MB, 256MB, 512MB, 1GB x1
Socket 3 (Rows 4&5) 64MB, 128MB, 256MB, 512MB, 1GB x1

Total System Memory (Max 3GB) =

3. H/W SETUP

System Memory

ASUS A7V266-E User’s Manual 25

3. HARDWARE SETUP

3.5.2 General DIMM Notes

• DIMMs that have more than 18 chips are not supported on this motherboard.

• ASUS motherboards support SPD (Serial Presence Detect) DIMMs. This is the

memory of choice for best performance vs. stability.

• BIOS shows SDRAM memory on bootup screen.

• Single-sided DDR DIMMs come in 64, 128, and 256MB; double-sided come in

128, 256, and 512MB.

WARNING! Be sure that the DIMMs you use can handle the specified DDR

RAM MHz or else bootup will not be possible.

System Memory

3. H/W SETUP

3.5.3 Memory Installation

WARNING! Make sure that you unplug your power supply when adding or

removing memory modules or other system components. Failure to do so may
cause severe damage to both your motherboard and expansion cards (see 3.3
Hardware Setup Procedure for more information).

Insert the module(s) as shown. Because the number of pins are different on either
side of the breaks, the module will only fit in the orientation shown. A 184-pin DDR
DRAM DIMM has a single notch slightly to the right of center.

A7V266-E

010101

104 Pins

80 Pins

A7V266-E 184-Pin DDR
DIMM Sockets

26 ASUS A7V266-E User’s Manual

3. HARDWARE SETUP

3.6 Central Processing Unit (CPU)

The motherboard provides a Socket 462 or Socket A for CPU installation. A fan and
heatsink should be attached to the CPU to prevent overheating. Purchase and install
a fan and heatsink before turning on the system.

010101

A7V266-E

A7V266-E Socket A

CPU NOTCH
TO INNER
CORNER

AMD™ CPU

1. Locate the Socket 462 and open it by pulling
the lever gently sideways away from the socket.
Then lift the lever upwards. The socket lever
must be fully opened (90 to 100 degrees).

2. Insert the CPU with the correct orientation. The
notched corner of the CPU must be oriented
toward the inner corner of the socket base
nearest to the lever hinge.

LOCK

LEVER

CPU NOTCH

3. H/W SETUP

System Memory

CAUTION! The CPU fits in one orientation

and should drop easily into place. Do not force
the CPU into the socket to avoid bending the

pins. If the CPU does not fit, check its
alignment and look for bent pins.

3. Once completely inserted, press the CPU firmly
and close the socket lever until it snaps into its locked position.

4. Place the CPU fan and heatsink on the CPU. The heatsink should entirely cover
the CPU. Carefully attach the heatsink locking brace to the plastic clips on the
socket base. With the added weight of the CPU fan and heatsink locking brace,
no extra force is required to keep the CPU in place.

CAUTION! Take care not to scrape the motherboard surface when mounting a

clamp-style processor fan, or else damage may occur . When mounting a heatsink
onto your CPU, make sure that exposed CPU capacitors do not touch the
heatsink, or else damage may occur! Refer to heatsink/CPU documentation.

NOTE! Do not forget to set the correct Bus Frequency and Multiple (available

only on unlocked processors) to avoid start-up problems.

ASUS A7V266-E User’s Manual 27

3.7 Expansion Cards

In the future, you may need to install expansion cards. The motherboard has five
PCI expansion slots to support these cards. Follow the steps in the next section
when installing expansion cards.

W ARNING! Unplug the system power cord when adding or removing expansion

cards or other system components. Failure to do so may cause severe damage to
both the motherboard and expansion cards.

3.7.1 Installing an Expansion Card

1. Read the documentation that comes with the expansion card and make any

CPU Installation

3. H/W SETUP

2. Remove the system unit cover and the bracket plate on the slot you intend to use.

3. Align the card connectors with the slot and press firmly until the card fits in

4. Secure the card to the slot with the screw you removed earlier.

5. Replace the system cover.

6. Change the necessary BIOS settings, if any.

7. Install the necessary software drivers for the expansion card.

3. HARDWARE SETUP

necessary hardware settings for the card before installing it.

Keep the screw for later use.

place.

(see section 4.4.3 PCI Configuration to change the settings.)

28 ASUS A7V266-E User’s Manual

3. HARDWARE SETUP

3.7.2 Assigning IRQs for Expansion Cards

Some expansion cards need an IRQ to operate. Generally , an IRQ must be exclusively
assigned to one use. In a standard design, there are 16 IRQs available but most of
them are already in use, leaving 6 IRQs free for expansion cards. If your motherboard
has PCI audio onboard, an additional IRQ will be used. If your motherboard also
has MIDI enabled, another IRQ will be used, leaving 4 IRQs free.

IMPORTANT: If using PCI cards on shared slots, make sure that the drivers support
“Share IRQ” or that the cards do not need IRQ assignments. Conflicts arise between
the two PCI groups that will make the system unstable or cards inoperable.

The following table lists the default IRQ assignments for standard PC devices. Use
this table when configuring your system and for resolving IRQ conflicts.

Standard Interrupt Assignments

IRQ Priority Standard Function

0 1 System Timer
1 2 Keyboard Controller
2 N/A Programmable Interrupt
3* 11 Communications Port (COM2)
4* 12 Communications Port (COM1)
5* 13 Sound Card (sometimes LPT2)
6 14 Floppy Disk Controller
7* 15 Printer Port (LPT1)
8 3 System CMOS/Real Time Clock
9* 4 ACPI Mode when used
10* 5 IRQ Holder for PCI Steering
11* 6 IRQ Holder for PCI Steering
12* 7 PS/2 Compatible Mouse Port
13 8 Numeric Data Processor
14* 9 Primary IDE Channel
15* 10 Secondary IDE Channel

3. H/W SETUP

Expansion Cards

*These IRQs are usually available for ISA or PCI devices.

Interrupt Request Table for this Motherboard

INT-A INT-B INT-C INT-D

PCI slot 1 ———shared
PCI slot 2 shared ———
PCI slot 3 — shared ——
PCI slot 4 ——used —
PCI slot 5 ———shared
AGPPro slot shared shared ——
ACR slot shared ———
Onboard audio controller — shared ——
Onboard USB controller ———shared
Onboard IDE controller ———shared

ASUS A7V266-E User’s Manual 29

3. HARDWARE SETUP

3.7.3 Accelerated Graphics Port (AGP) Pro Slot

This motherboard has an Accelerated Graphics Port (AGP) Pro slot to support the
new generation graphics cards with ultra-high memory bandwidth.

010101

AGP Card without Retention Notch

A7V266-E

TOP VIEW

28-pin bay

A7V266-E Accelerated
Graphics Port (AGP PRO)

20-pin bay

Rib (inside slot) Rib

Expansion Cards

3. H/W SETUP

CAUTION! The AGP Pro slot is shipped with a warning label over the 20-pin bay .

DO NOT remove this label and the safety tab underneath it if you are using an
AGP card without a retention notch. Removing may cause the
card to shift and may cause damage to the card, slot, and
motherboard. Remove the label and tab ONLY if you are using
an AGP Pro card. Use a rigid tip, such as a pen tip, to dislodge

3.7.4 Advanced Communication Riser (ACR) Slot

This motherboard has an Advanced Communication Riser (ACR) slot for
communications and audio subsystems. The slot supports modem, audio, LAN, and
Home Phoneline Networking Alliance (HPNA) or Home Networking cards. The
ACR slot is backward compatible with the Audio Modem Riser (AMR) cards.

IMPORTANT! The ACR slot on the motherboard shares the same expansion

slot with PCI Slot 5.

Removing the tab

010 10 1

A7V266-E

A7V266-E Advanced
Communication Riser (ACR)

30 ASUS A7V266-E User’s Manual