AOpen AX4BRU User Manual

AAXX44BBRR--UU OOnnlliinnee MMaannuuaall

AX4BR-U

DOC. NO.: AX4BRU-OL-E0209B

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WWhhaatt’’ss iinn tthhiiss mmaannuuaall

AX4BR-U .......................................................................................................................................... 1

What’s in this manual ......................................................................................................................................................2

You Must Notice .............................................................................................................................................................. 8

Before You Start.............................................................................................................................................................. 9

Overview .......................................................................................................................................................................10

Feature Highlight........................................................................................................................................................... 11

Quick Installation Procedure ......................................................................................................................................... 14

Motherboard Map .......................................................................................................................................................... 15

Block Diagram............................................................................................................................................................... 16

Hardware Installation.................................................................................................................. 17

About “User Upgrade Optional” and “Manufacture Upgrade Optional”… ....................................................................... 18

JP14 Clear CMOS Data ................................................................................................................................................19

CPU Installation ............................................................................................................................................................20

CPU Jumper-less Design ..............................................................................................................................................23

CPU and System Fan Connector (with H/W Monitoring) ...............................................................................................24

DIMM Sockets ............................................................................................................................................................... 25

Front Panel Connector .................................................................................................................................................. 27

AAXX44BBRR--UU OOnnlliinnee MMaannuuaall

ATX Power Connector................................................................................................................................................... 28

AC Power Auto Recovery .............................................................................................................................................. 29

STBY LED..................................................................................................................................................................... 30

IDE and Floppy Connector ............................................................................................................................................ 31

WOL (Wake on LAN)..................................................................................................................................................... 33

Support 10/100 Mbps LAN onboard .............................................................................................................................. 35

PC99 Color Coded Back Panel ..................................................................................................................................... 36

Support 2nd USB Port .................................................................................................................................................... 37

Connecting COM2 Connector........................................................................................................................................ 38

Over-current Protection ................................................................................................................................................. 39

3300µF Low ESR Capacitor .......................................................................................................................................... 40

Layout (Frequency Isolation Wall) ................................................................................................................................. 41

Enlarged Aluminum Heatsink ........................................................................................................................................ 42

Driver and Utility ......................................................................................................................... 43

Installing Intel® Chipset Software Installation Utility...................................................................................................... 44

Installing Intel IAA Driver............................................................................................................................................... 45

ACPI Suspend to Hard Drive......................................................................................................................................... 46

BIOS Setup Utility........................................................................................................................ 47

Enter Setup ................................................................................................................................................................... 48

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System Information ....................................................................................................................................................... 49

Product Information ....................................................................................................................................................... 53

Disk Drives.................................................................................................................................................................... 55

Onboard Peripherals ..................................................................................................................................................... 60

Power Management ......................................................................................................................................................67

Boot Options ................................................................................................................................................................. 71

Date and Time............................................................................................................................................................... 75

System Security ............................................................................................................................................................77

Health Monitor............................................................................................................................................................... 80

Load Default Settings.................................................................................................................................................... 86

Abort Settings Change .................................................................................................................................................. 87

Exit Setup ..................................................................................................................................................................... 88

Overclocking ................................................................................................................................ 89

VGA Card & Hard Disk.................................................................................................................................................. 90

Glossar y ....................................................................................................................................... 91

AC97............................................................................................................................................................................. 91

ACPI (Advanced Configuration & Power Interface) .......................................................................................................91

AGP (Accelerated Graphic Port) ................................................................................................................................... 91

AMR (Audio/Modem Riser)............................................................................................................................................ 92

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AOpen Bonus Pack CD ................................................................................................................................................. 92

APM (Advanced Power Management)...........................................................................................................................92

ATA (AT Attachment) ..................................................................................................................................................... 92

ATA/66 .......................................................................................................................................................................... 92

ATA/100 ........................................................................................................................................................................93

BIOS (Basic Input/Output System) ................................................................................................................................ 93

Bus Master IDE (DMA mode) ........................................................................................................................................ 93

CNR (Communication and Networking Riser)................................................................................................................ 94

CODEC (Coding and Decoding) .................................................................................................................................... 94

DDR (Double Data Rated) SDRAM ............................................................................................................................... 94

DIMM (Dual In Line Memory Module) ............................................................................................................................ 94

DMA (Direct Memory Access)........................................................................................................................................ 95

ECC (Error Checking and Correction) ........................................................................................................................... 95

EDO (Extended Data Output) Memory .......................................................................................................................... 95

EEPROM (Electronic Erasable Programmable ROM).................................................................................................... 95

EPROM (Erasable Programmable ROM) ......................................................................................................................96

EV6 Bus ........................................................................................................................................................................ 96

FCC DoC (Declaration of Conformity) ...........................................................................................................................96

FC-PGA (Flip Chip-Pin Grid Array)................................................................................................................................ 96

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Flash ROM .................................................................................................................................................................... 97

FSB (Front Side Bus) Clock ..........................................................................................................................................97

I2C Bus.......................................................................................................................................................................... 97

IEEE 1394..................................................................................................................................................................... 98

Parity Bit ....................................................................................................................................................................... 98

PBSRAM (Pipelined Burst SRAM)................................................................................................................................. 98

PC-100 DIMM ...............................................................................................................................................................99

PC-133 DIMM ...............................................................................................................................................................99

PC-1600 or PC-2100 DDR DRAM ................................................................................................................................. 99

PCI (Peripheral Component Interface) Bus ................................................................................................................... 99

PDF Format................................................................................................................................................................... 99

PnP (Plug and Play) .................................................................................................................................................... 100

POST (Power-On Self Test) ........................................................................................................................................100

RDRAM (Rambus DRAM) ........................................................................................................................................... 100

RIMM (Rambus Inline Memory Module) ...................................................................................................................... 100

SDRAM (Synchronous DRAM) .................................................................................................................................... 101

Shadow E2PROM ........................................................................................................................................................ 101

SIMM (Single In Line Memory Module) ....................................................................................................................... 101

SMBus (System Management Bus) ............................................................................................................................. 101

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SPD (Serial Presence Detect)..................................................................................................................................... 102

Ultra DMA ................................................................................................................................................................... 102

USB (Universal Serial Bus) ......................................................................................................................................... 102

VCM (Virtual Channel Memory)................................................................................................................................... 103

ZIP file......................................................................................................................................................................... 103

Troubleshooting......................................................................................................................... 104

Technical Support ..................................................................................................................... 108

Product Registration ................................................................................................................. 111

How to Contact Us .................................................................................................................... 112

AAXX44BBRR--UU OOnnlliinnee MMaannuuaall

YYoouu MMuusstt NNoottiiccee

Adobe, the Adobe logo, Acrobat is trademarks of Adobe Systems Incorporated.

AMD, the AMD logo, Athlon and Duron are trademarks of Advanced Micro Devices, Inc.

Intel, the Intel logo, Intel Celeron, Pentium II, Pentium III and Pentium 4 are trademarks of Intel Corporation.

Microsoft, Windows, and Windows logo are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.

All product and brand names used on this manual are used for identification purposes only and may be the registered trademarks of their respective owners.

All of the specifications and information contained in this manual are subject to change without notice. AOpen reserves the right to revise this publication and to make reasonable changes. AOpen assumes no responsibility for any errors or inaccuracies that may appear in this manual, including the products and software described in it.

This documentation is protected by copyright law. All rights are reserved. No part of this document may be used or reproduced in any form or by any means, or stored in a database or retrieval system without prior written permission from AOpen Corporation. Copyright

©

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BBeeffoorree YYoouu SSttaarrtt

This Online Manual will introduce to the user how this product is installed. All useful information will be described in later

chapters. Please keep this manual carefully for future upgrades or system configuration changes. This Online Manual is saved

in PDF format

free download from Adobe web site

Although this Online Manual is optimized for screen viewing, it is still capable for hardcopy printing, you can print it by A4 paper

size and set 2 pages per A4 sheet on your printer. To do so, choose File > Page Setup and follow the instruction of your printer

driver.

Thanks for the help of saving our earth.

, we recommend using Adobe Acrobat Reader 4.0 for online viewing, it is included in Bonus CD or you can get

.

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OOvveerrvviieeww

Thank you for choosing AOpen AX4BR-U motherboard. The AX4BR-U is Intel® Socket 478 motherboard (M/B) based on the ATX

form factor featuring the Intel

motherboard can support Intel

different customer’s requirements, the Intel 845E chipset memory interface supports DDR200/266 SDRAM devices with

densities of 128, 256, 512 and 1024Mb DDR SDRAM DIMM modules and the maximum memory size can be up to 2GB. The

onboard IDE controller supports Ultra DMA

8M ATI Rage XL VGA onboard and equips with Intel LAN controller providing 10/100M bps

Ethernet for office and home use. Now, let’s enjoy all features from AOpen

AX4BR-U motherboard.

®

845E (Brookdale) chipset. As high performance chipset built in the M/B, the AX4BR-U

®

Socket 478 Pentium® 4 (Brookdale) and 533MHz Front Side Bus (FSB) clock. According to

33/66/100 mode and the transfer rate up to 100MB/s. Besides, the AX4BR-U has a

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AAXX44BBRR--UU OOnnlliinnee MMaannuuaall

FFeeaattuurree HHiigghhlliigghhtt

CPU

Supports Intel® Socket 478 Pentium® 4 (Brookdale) 1.4GHz~2.8GHz+ with 533MHz Front Side Bus (FSB) designed for Socket

478 technology.

Chipset

With Intel® 845E (Brookdale) chipset is designed for use with the Intel Pentium 4 processor and Northwood processor in the

478-pin package. The Intel 845E chipset Memory Controller Hub (MCH) component provides the processor interface, DRAM

interface, AGP interface, and Hub Interface in an Intel 845E desktop platform. It is optimized for the Intel Pentium 4 processor

and Northwood processor, supporting a single channel of DDR 200/266. Besides, it also supports the second generation I/O

Controller Hub (Intel ICH4) to provide the features required by a desktop platform.

Expansion Slots

Including five 32-bit/33MHz PCI. The PCI local bus throughput can be up to 132MB/s. Of five PCI slots provided, all of them are

master PCI slots with arbitration and decoding for all integrated functions and LPC bus.

Memory

Provides two 184-pin DDR SDRAM DIMM sockets that support up to 2GB of PC-200/266 compliant DDR SDRAM (Synchronous

Dynamic Random Access Memory). You may install 128, 256, 512 and 1024Mb DDR SDRAM DIMM modules into each socket.

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Ultra DMA 33/66/100 Bus Master IDE

Comes with an on-board PCI Bus Master IDE controller with two connectors that supports four IDE devices in two channels,

supports Ultra DMA

33/66/100, PIO Modes 3 and 4 and Bus Master IDE DMA Mode 5, and supports Enhanced IDE devices.

®

82540EM GbE and Intel® 82551 LAN controllers

Intel

Another cost-effective feature for network solution is the integration of Intel 82540EM GbE and Intel 82551 10/100 Mbps Fast

Ethernet controllers. The Intel 82540EM GbE integrates Intel’s fourth-generation Gigabit MAC design with fully integrated,

physical-layer circuitry to provide a standard IEEE 802.3 Ethernet interface for 1000BASE-T and 100BASE-TX applications.

Moreover, on the strength of Intel 82551 LAN controller on board, which is a highly integrated Platform LAN Connect device, it

provides 10/100 Mbps Ethernet.

Four USB Connectors

Provides two ports on the back panel and one USB connector for USB interface devices, such as mouse, keyboard, modem,

scanner, etc.

Power Management/Plug and Play

Supports the power management function that confirms to the power-saving standards of the U.S. Environmental Protection

Agency (EPA) Energy Star program. It also offers Plug-and-Play

making the system much user-friendlier.

, which helps save users from configuration problems, thus

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Hardware Monitoring Management (RAS)

Supports CPU or system fans status, temperature and voltage monitoring and alert, through the on-board hardware monitor

module.

Enhanced ACPI

Fully implement the ACPI standard for Windows® 98/ME/2000 series compatibility, and supports Soft-Off, STR (Suspend to RAM,

S3), STD (Suspend to Disk, S4) features.

Super Multi-I/O

Provides two high-speed UART compatible serial ports and one parallel port with EPP and ECP capabilities. UART can also be

directed from COM1 to the Infrared Module for the wireless connections.

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AAXX44BBRR--UU OOnnlliinnee MMaannuuaall

QQuuiicckk IInnssttaallllaattiioonn PPrroocceedduurree

This page gives you a quick procedure on how to install your system. Follow each step accordingly.

1. Installing CPU and Fan

2. Installing System Memory (DIMM)

3. Connecting Front Panel Cable

4. Connecting IDE and Floppy Cable

5. Connecting ATX Power Cable

6. Connecting Back Panel Cable

7. Power-on and Load BIOS Setup Default

8. Setting CPU Frequency

9. Reboot

10. Installing Operating System (such as Windows 98)

11. Installing Driver and Utility

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Motherboard Map

COM2 Connecto

32-bit PCI Expansion Slot x5

JP14 CMOS Clear Jumpe

WOL Connecto

2ndUSB Connecto

4Mbit Flash ROM

RAID IDE1 Connecto

RAID IDE2 Connecto

PC99 Colored Back Panel

4-pin 12V. ATX Power Connecto

SYSFAN2 Connector

2200μF Low ESR Capacitors

478-pin CPU socket with Voltage and Frequency

uto-detection that supports

®

Intel

Pentium® 4

®

845E chipset

Intel CPUFAN Connector

184-pin DIMM Socket x2 supports PC-200/266 DDR SDRAM maximum up to 2 GB SYSFAN1 Connecto

TX Power Connector

Front Panel Connector

TA/33/66/100

IDE Connector x2

1

FDD Connecto

AAXX44BBRR--UU OOnnlliinnee MMaannuuaall

BBlloocckk DDiiaaggrraamm

Socket 478

Intel

Pentium 4

CPU

533MHz System

Bus

Floppy Disk Drive x2

PC-200/266 DDR

SDRAM Up to 2GB

DIMM S ocket x2

Intel 845E

PDC20276 IDE RAID

USB

Connector x4

PCI Bus

1stUSB Port

2ndUSB Port

32-bit PCI Slot x5

ATA

33/66/100

Primary

Channel

Secondary

Channel

Intel ICH4

Low Pin

Count Super

I/O

VGA

Rage XL

Firmware Hub

4Mbit Flash EEPROM

Paralle l Port

Serial Port x2

IDE Drive x4

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AAXX44BBRR--UU OOnnlliinnee MMaannuuaall

HHaarrddwwaarree IInnssttaallllaattiioonn

This chapter describes jumpers, connectors and hardware devices of this motherboard.

Note: Electrostatic discharge (ESD) can damage your processor, disk drives, expansion boards, and

other components. Always observe the following precautions before you install a system component.

1. Do not remove a component from its protective packaging until you are ready to install it.

2. Wear a wrist ground strap and attach it to a metal part of the system unit before handling a

component. If a wrist strap is not available, maintain contact with the system unit throughout any

procedure requiring ESD protection.

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AAXX44BBRR--UU OOnnlliinnee MMaannuuaall

AAbboouutt ““UUsseerr UUppggrraaddee OOppttiioonnaall”” aanndd ““MMaannuuffaaccttuurree UUppggrraaddee OOppttiioonnaall””……

When you read this online manual and start to assemble your computer system, you may notice that some of the functions are

marked as “User Upgrade Optional” or “Manufacture Upgrade Optional”. Although all of AOpen’s motherboards have included

many amazing and powerful features, sometimes not every user is familiar with these powerful features. As a result of this we

define features that can be upgraded by users as “User Upgrade Optional”. You can upgrade these functions by purchasing

additional devices. As for functions that cannot be upgraded by users, we define them as “Manufacture Upgrade Optional”. If

need be, you can contact our local distributors or resellers to purchase “Manufacture Upgrade Optional” components, and again

you are also welcome to visit our official website at english.aopen.com.tw

for detail information.

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JJPP1144 CClleeaarr CCMMOOSS DDaattaa

You can clear CMOS to restore system default setting. To clear the CMOS, follow the procedure below.

1. Turn off the system and unplug the AC power.

2. Remove ATX power cable from connector PWR2.

3. Locate JP14 and short pins 2-3 for a few seconds.

4. Return JP14 to its normal setting by shorting pin1 & pin2.

5. Connect ATX power cable back to connector PWR2.

Normal

default

Clear

CMOS

Pin 1

Tip: When should I Clear CMOS?

1. Boot fail because of overclocking…

2. Forget password…

3. Troubleshooting…

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AAXX44BBRR--UU OOnnlliinnee MMaannuuaall

CCPPUU IInnssttaallllaattiioonn

This motherboard supports Intel® Pentium 4 Socket 478 series CPU (Brookdale). Be careful of CPU orientation when you plug it

into CPU socket.

1. Pull up the CPU socket lever and

up to 90-degree angle.

2. Locate Pin 1 in the socket and look for a cut edge on the CPU upper interface. Match Pin 1 and cut edge, then insert the CPU into the socket.

Note: These pictures are for example only; it may not exactly be the same motherboard.

CPU socket

Lever

CPU pin 1 and

cut edge

CPU cut edge

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3. Press down the CPU socket lever and finish CPU installation.

Note: This picture is for example only; it may not exactly be the same motherboard.

CPU cut edge

Note: If you do not match the CPU

socket Pin 1 and CPU cut edge well, it

ma

damage the CPU.

Note: This socket supports

Micro-FC-PGA2 package CPU, which

is the latest CPU package developed

by Intel. Other forms of CPU package

are impossible to be fitted in.

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CCPPUU FFaann IInnssttaallllaattiioonn

This motherboard comes with a retention module attached on the CPU socket when shipped, we strongly recommend you to

install AOpen special designed CPU Fan as shown below on the retention module for better heat dissipation. Please install the

CPU Fan correctly as the following pictures shown.

1. Gently put the CPU Fan down on the

retention module with clips aligning correctly to the four corners.

2. Pressing down the four clips with force one by one on the retention module.

Clip

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CCPPUU JJuummppeerr--lleessss DDeessiiggnn

CPU VID signal and SMbus clock generator provide CPU voltage auto-detection and allows the user to set the CPU frequency

through the BIOS setup

designs are eliminated. There will be no worry of wrong CPU voltage detection.

, therefore no jumpers or switches are used. The disadvantages of the Pentium based jumper-less

Intel® Socket 478

Pentium 4 CPU

CPU VID signal

Power Regulator

(Automatically generates CPU voltage)

CPU Freq. Ratio

CPU voltage

Clock

Generator

BIOS

Controlled

Circuit

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AAXX44BBRR--UU OOnnlliinnee MMaannuuaall

CCPPUU aanndd SSyysstteemm FFaann CCoonnnneeccttoorr ((wwiitthh HH//WW MMoonniittoorriinngg))

Plug in the CPU fan cable to the 3-pin CPUFAN connector. If you have chassis fan, you can also plug it on SYSFAN1 or

SYSFAN2 connector.

GND +12V SENSOR

SYSFAN1 Connector

SYSFAN2 Connector

CPUFAN Connector

Note: Some CPU fans do not have

sensor pin, so that cannot support

hardware monitoring function.

SENSOR

GND

+12V

GND

+12V

SENSOR

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DDIIMMMM SSoocckkeettss

This motherboard has two 184-pin DDR DIMM sockets that allow you to install DDR200 or DDR266 memory up to 2GB. Both

ECC and Non-ECC DDR SDRAM are supported, but you can’t install them both on DIMM. Otherwise, it will cause serious

damage on memory sockets or SDRAM module.

DIMM1 DIMM2

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AAXX44BBRR--UU OOnnlliinnee MMaannuuaall

HHooww ttoo IInnssttaallll MMeemmoorryy MMoodduulleess

Please follow the procedure as shown below to finish memory installation.

1. Make sure the DIMM module’s pin face down and match the socket’s size as depicted below.

2. Insert the module straight down to the DIMM slot with both hands and press down firmly until the DIMM module is securely

in place.

3. Repeat step 2 to finish additional DIMM modules installation.

Ta b

40 pins 52 pins

Note: The tabs of the DIMM slot

will close-up to hold the DIMM in

place when the DIMM touches

the slot’s bottom.

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AAXX44BBRR--UU OOnnlliinnee MMaannuuaall

FFrroonntt PPaanneell CCoonnnneeccttoorr

SPEAKER

+5V

+5V GND GND

GND

RESET

GND

ATX_ ON

GND

Attach the power LED, Keylock, speaker, power and reset switch connectors t

the corresponding pins. If you enable “Suspend Mode” item in BIOS Setup, th

ACPI & Power LED will keep flashing while the system is in suspend mode.

Locate the power switch cable from your ATX housing. It is 2-pin female

connector from the housing front panel. Plug this connector to the soft-power

switch connector marked SPWR.

Suspend Type ACPI LED

Power on Suspend (S2) or Suspend to RAM (S3) Flashing for every second

Suspend to Disk (S4) The LED will be turned off

IDE LED IDE LED +5V GND INTRUDER

1

PWR BN GND

CPILED-

GND

CPILED

SPEAKER

RESET

IDE LED

CPI &

Power LED

Power Switch

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AATTXX PPoowweerr CCoonnnneeccttoorr

This motherboard comes with a 20-pin and 4-pin ATX power connector. Make sure you plug in the right direction. We strongly

recommend you to connect the 4-pin 12V ATX connector before connecting the 20-pin ATX power connector and use standard

power supply specially designed for Pentium 4 system.

4-Pin 12V ATX Power Connector

20-Pin Power Connector

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AAXX44BBRR--UU OOnnlliinnee MMaannuuaall

AACC PPoowweerr AAuuttoo RReeccoovveerryy

A traditional ATX system should remain at power off stage when AC power resumes from power failure. This design is

inconvenient for a network server or workstation, without an UPS, that needs to keep power-on. This motherboard implements

an AC Power Auto Recovery function to solve this problem.

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SSTTBBYY LLEEDD

STBY LED is AOpen’s considerate design that we aim at providing you friendly system information. The STBY LED will light up

when power is provided to the motherboard. This is a convenient indication for you to check the system power status in many

circumstances such as power on/off, stand-by mode and RAM power status during Suspend to RAM mode.

Warning: Do not install or remove the

DIMM module or others devices when

the STBY LED lights on.

System

Power LED

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IIDDEE aanndd FFllooppppyy CCoonnnneeccttoorr

Connect 34-pin floppy cable and 40-pin IDE cable to floppy connector FDC and IDE connector. Pin1 of cable is normally marked

with red color. Addition to IDE connectors, we also provide two RAID IDE connectors for you to connect RAID. Be careful of the

pin1 orientation. Wrong orientation may cause system damage.

RAID primary

channel

RAID secondary channel

FDD Connector

IDE Secondary (2nd)

IDE Primary (1st)

ATA 66/100 IDE

Connector

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66/100 is required

AAXX44BBRR--UU OOnnlliinnee MMaannuuaall

IDE1 is also known as the primary channel and IDE2 as the secondary channel. Each channel supports two IDE devices that

make a total of four devices. In order to work together, the two devices on each channel must be set differently to Master and

Slave mode. Either one can be the hard disk or the CDROM. The setting as master or slave mode depends on the jumper on

your IDE device, so please refer to your hard disk and CDROM manual accordingly.

This motherboard supports ATA3 3

modes. The IDE bus is 16-bit, which means every transfer is two bytes.

Mode Clock Period Clock

PIO mode 0 30ns 20 600ns (1/600ns) x 2byte = 3.3MB/s

PIO mode 1 30ns 13 383ns (1/383ns) x 2byte = 5.2MB/s

PIO mode 2 30ns 8 240ns (1/240ns) x 2byte = 8.3MB/s

PIO mode 3 30ns 6 180ns (1/180ns) x 2byte = 11.1MB/s

PIO mode 4 30ns 4 120ns (1/120ns) x 2byte = 16.6MB/s

DMA mode 0 30ns 16 480ns (1/480ns) x 2byte = 4.16MB/s

DMA mode 1 30ns 5 150ns (1/150ns) x 2byte = 13.3MB/s

DMA mode 2 30ns 4 120ns (1/120ns) x 2byte = 16.6MB/s

ATA 33 30ns 4 120ns (1/120ns) x 2byte x2 = 33MB/s

ATA 66 30ns 2 60ns (1/60ns) x 2byte x2 = 66MB/s

ATA100 20ns 2 40ns (1/40ns) x 2byte x2 = 100MB/s

Warning: The specification of the IDE cable is a maximum of 46cm (18 inches);

make sure your cable does not exceed this length.

, ATA 66 or ATA100 IDE devices. Following table lists the transfer rate of IDE PIO and DMA

Count

Cycle Time Data Transfer Rate

32

Tip:

1. For better signal quality,

it is recommended to set

the far end side device

to master mode and

follow the suggested

sequence to install your

new device. Please refer

to above diagram

2. To achieve the best

performance of Ultra

DMA 66/100 hard disks,

a special 80-wires IDE

cable for Ultra DMA

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AAXX44BBRR--UU OOnnlliinnee MMaannuuaall

WWOOLL ((WWaakkee oonn LLAANN))

This feature is very similar as Wake On Modem, but it goes through local area network. To use Wake On LAN function, you must

have a network card with chipset that supports this feature, and connect a cable from LAN card to motherboard WOL connector.

The system identification information (probably IP address) is stored on network card and because there is a lot of traffic on the

Ethernet, you need to install network management software, such as ADM, for the checking of how to wake up the system. Note

that, at least 600mA ATX standby current is required to support the LAN card for this function.

WWOOLL CCoonnnneeccttoorr

LID

GND

+5VSB

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WOL Connector

(Motherboard Side)

Note: This picture is for example only, it may not exactly be the same motherboard.

WOL Connector

(Ethernet Card Side)

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SSuuppppoorrtt 1100//110000 MMbbppss LLAANN oonnbbooaarrdd

The Intel 82551QM includes a fast Ethernet controller on chip. On the strength of this LAN controller on board, which is a

highly-integrated Platform LAN Connect device, it provides 10/100M bps Ethernet for office and home use, the Ethernet RJ45

connector is located on top of USB connectors. The green LED indicates the link mode, it lights when linking to network and

blinking when transferring data. The orange LED indicates the transfer mode, and it lights when data is transferring in 100Mbps

mode. To enable or disable this function, you may simply adjust it through BIOS.

Green/ACT

Orange/Speed

100/10Mb Ethernet

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AAXX44BBRR--UU OOnnlliinnee MMaannuuaall

PPCC9999 CCoolloorr CCooddeedd BBaacckk PPaanneell

The onboard I/O devices are PS/2 Keyboard, PS/2 Mouse, COM1, VGA port, Printer, USB, and LAN ports. The view angle of

drawing shown here is from the back panel of the housing.

PS/2 Mouse

Connector

SPP/EPP/ECP

Parallel Port

USB

Connectors

LAN Port

PS/2 Keyboard

PS/2 Keyboard: For standard keyboard, which is using a PS/2 plug. PS/2 Mouse: For PC-Mouse, which is using a PS/2 plug. USB Port: Available for connecting USB devices. Parallel Port: To connect with SPP/ECP/EPP printer. COM1/COM2 Port: To connect with pointing devices, modem or others serial devices. VGA Connector: To connect with PC monitor.

Connector

COM 2 Port

VGA Port

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d

nnd

SSuuppppoorrtt 2

This motherboard provides four USB connectors to connect USB devices, such as mouse, keyboard, modem, printer, etc. There

are two connectors on the PC99 back panel. You can use proper cable to connect the other USB connector to the back panel or

front panel of chassis.

2

UUSSBB PPoorrtt

Pin 1

USB2 Connector

USBPWR0

USB_FP_P0-

USB_FP_P0+

GND

KEY

1 2

USBPWR0 USB_FP_P1-

USB_FP_P1+

GND

NC

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CCoonnnneeccttiinngg CCOOMM22 CCoonnnneeccttoorr

This motherboard comes with a COM1 connector on the back panel. However, we provide an extra COM2 connector for your

convenience. Once you need to connect a device via COM2, just connect a suitable cable on it.

CTS# DSR# DTR#

SIN

2 1

Pin1

RTS# RI# GND SOUT DCD#

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OOvveerr--ccuurrrreenntt PPrrootteeccttiioonn

The Over Current Protection was very popular implemented on ATX 3.3V/5V/12V switching power supply. However, the new

generation CPU uses different voltage that has regulator to transfer 5V to CPU voltage (for example, 2.0V), and makes 5V over

current protection useless. This motherboard is with switching regulator onboard supports CPU over-current protection; in

conjunction with 3.3V/5V/12V power supply provide the full line over-current protection.

Note: Although we have implemented protection circuit try to prevent any human operating

mistake, there is still certain risk that CPU, memory, HDD, add-on cards installed on this

motherboard may be damaged because of component failure, human operating error or unknown

nature reason. AOpen cannot guaranty the protection circuit will always work perfectly.

ATX

Switching

Power

Supply

12V (Protected by power supply)

3.3V (Protected by power supply)

5V (Protected by power supply)

Onboard

Power

Regulator

Over-Current

Protection

Circuit

CPU Core Voltage

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0

3333000

The quality of low ESR capacitor (Low Equivalent Series Resistance) during high frequency operation is very important for the

stability of CPU power. The idea of where to put these capacitors is another know-how that requires experience and detail

calculation.

Not only that, AX4BR-U implements 3300μF capacitors, which is much larger than normal capacitor (1000 and 1500μF) and it

provides better stability for CPU power.

μμμμ

FF LLooww EESSRR CCaappaacciittoorr

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LLaayyoouutt ((FFrreeqquueennccyy IIssoollaattiioonn WWaallll))

Note: This diagram for example only, it may not be exactly the same as this motherboard.

For high frequency operation, especially overclocking,

layout is the most important factor to make sure

chipset and CPU working in stable condition. The

layout of this motherboard implements AOpen’s

unique design called “ Frequency Isolation Wall”.

Separating each critical portion of motherboard into

regions where each region operates in a same or

similar frequency range to avoid cross talk and

frequency interference between each region’s

operations and condition. The trace length and route

must be calculated carefully. For example, the clock

trace must be equal length (not necessarily as short

as possible) so that clock skew will be controlled

within few a pico second (1/10

12

Sec)

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EEnnllaarrggeedd AAlluummiinnuumm HHeeaattssiinnkk

Cool down CPU and Chipset is important for system reliability. Enlarged aluminum heat sink provides better heat consumption

especially when you are trying to over clocking the CPU.

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DDrriivveerr aanndd UUttiilliittyy

There are motherboard drivers and utilities included in AOpen Bonus CD. You don’t need to install all of them in order to boot

your system. But after you finish the hardware installation, you have to install your operation system first (such as Windows

2000) before you can install any drivers or utilities. Please refer to your operation system’s installation guide.

Note: Please follow recommended procedure

to install Windows 2000

and Windows XP.

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IInnssttaalllliinngg IInntteell®® CChhiippsseett SSooffttwwaarree IInnssttaallllaattiioonn UUttiilliittyy

Windows 95/98 cannot recognize this chipset, because it was released before the Intel 845E chipset. You can install the Intel

INF Update Utility from the Bonus Pack CD auto-run menu to eliminate the “?” marks.

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IInnssttaalllliinngg IInntteell IIAAAA DDrriivveerr

You can install Intel IAA Driver to increase the performance of software applications and reduce PC boot times. You can find it in

the AOpen Bonus Pack

CD.

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AACCPPII SSuussppeenndd ttoo HHaarrdd DDrriivvee

ACPI Suspend to Hard Drive is basically controlled by Windows operation system. It saves your current work (system status,

memory and screen image) into hard disk, and then the system can be totally power off. Next time, when power is on, you can

resume your original work directly from hard disk within few seconds without go through the Windows booting process and run

your application again. If your memory is 64MB, normally, you need to reserve at least 64MB HDD space to save your memory

image.

When go into Suspend:

When power-on next time:

System

Image &

Status

System

Image &

Status

Save into

Restore within

seconds

Hard

Disk

Hard

Disk

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BBIIOOSS SSeettuupp UUttiilliittyy

Most of system had already configured by the manufacturer or the dealer. There is no need to run BIOS setup program when

starting the computer unless you get a run setup program message.

The setup program loads configuration values into the battery-backed nonvolatile memory called CMOS RAM. This memory

area is not part of the system RAM.

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EEnntteerr SSeettuupp

To enter Setup, press the DELETE key.

The Setup Utility Main Menu appears:

Use the arrow keys

Use

Press

to move to the next page or to return to the previous page if the setup screen has more than one page available.

, , “+” or “-” to select the options if they are available.

to return to the Main menu.

You must press DELETE while the system is booting.

This key does not work during any other time.

and to move around the Setup Utility screen.

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SSyysstteemm IInnffoorrmmaattiioonn

The following screen appears if you select System Information from the Main menu:

System Information Processor ..Intel (R) Pentium (R) 4 CPU 2.26GHz Processor Speed…………………………..2.26GHz Bus Frequency……………………………133/533 MHz Level 1 Cache……………………………..32 KB, Enabled Level 2 Cache……………………………..512 KB, Enabled Floppy Drive A……………………………1 .44 MB 3.5-inch IDE Primary Channel Master……………..Hard Disk, 20020 M.B. IDE Primary Channel Slave……………….None IDE Secondary Channel Master…………...None IDE Secondary Channel Slave……………..None Total Memory……………………………...256M 1st DIMM……………………………None 2nd DIMM…………………………..DDR RAM, 256 MB Serial Port 1 ………………………………3F8h,IRQ4 Serial Port 2 ………………………………2F8h,IRQ3 Parallel Port ……………………………….378h,IRQ7 PS/2 Mouse………………………………...Installed

The System Information menu shows the current basic configuration of your system.

The sections below explain the parameters.

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Processor

The Processor parameter specifies the type of processor currently installed in your system. The system supports Intel Pentium

4 up to 2.8GHz.

Processor Speed

The Processor Speed parameter specifies the speed of the processor currently installed in your system.

CPU/SDRAM BUS Frequency

This parameter specifies the currently FSB (Front Side Bus) frequency of the CPU/SDRAM.

Level 1 Cache

This parameter specifies the first-level or the internal fast accessed memory (i.e., the memory integrated into the CPU) size, and

whether it is enabled or disabled.

Level 2 Cache

This parameter specifies the second-level cache memory size that comes with the CPU. The available cache size is 256/512

KB.

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Diskette Drive A

This parameter specifies the system’s current diskette drive A settings.

IDE Primary Channel

This parameter specifies the current configuration of the IDE device connected to the master and slave ports of the primary IDE

channel.

IDE Secondary Channel

This parameter specifies the current configuration of the IDE device connected to the master and slave ports of the secondary

IDE channel.

Total Mem o r y

This parameter specifies the total amount of onboard memory. The memory size is automatically detected by BIOS during the

POST. If you install additional memory, the system automatically adjusts this parameter to display the new memory size.

1st Bank/2nd Bank/3rd Bank/4th Bank

The 1st Bank, 2nd Bank, 3rd Bank, and 4th Bank parameters indicate the type and size of DRAM installed in DIMM sockets 1

and 2 respectively. The “None” setting indicates that there is no DRAM installed.

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Serial Port 1

This parameter shows the serial port 1 address and IRQ setting.

Serial Port 2

This parameter shows the serial port 2 address and IRQ setting.

Parallel Port

This parameter shows the parallel port address and IRQ setting.

PS/2 Mouse

The BIOS utility automatically detects if there is a pointing device connected to your system. If there is, this parameter displays

the “Installed” setting. Otherwise, this is set to “None”.

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PPrroodduucctt IInnffoorrmmaattiioonn

The Product Information contains the general data about the system, such as the product name, serial number, BIOS version,

etc. This information is necessary for troubleshooting (may be required when asking for technical support).

The following shows how the Product Information screen appears:

Product Information

Product Name AX4BR-U

System S/N N/A

Main Board ID M51IX

Main Board SN N/A

System BIOS Version V4.0

SMBIOS Version 2.3

Product Name

This parameter specifies the official name of the system.

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System S/N

This parameter specifies the system’s serial number.

Main Board ID

This parameter specifies the motherboard’s identification number.

Main Board S/N

This parameter specifies the motherboard’s serial number.

System BIOS Version

This parameter specifies the version of the BIOS utility.

SMBIOS Version

This parameter specifies the version of the SMBIOS version.

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DDiisskk DDrriivveess

Select Disk Drives to input configuration values for disk drives.

The following screen shows the Disk Drives menu:

Disk Drives

Floppy Drive A [1.44MB 3.5-inch]

 IDE Primary Channel Master

 IDE Primary Channel Slave

 IDE Secondary Channel Master

 IDE Secondary Channel Slave

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Floppy Drives

To enter the configuration value for the first floppy drive, highlight the Floppy Drive A parameter. Press

view the options and select the appropriate value.

Drive A

None

360KB 5.25"

1.2MB 5.25"

720KB 3.5"

1.44MB 3.5"

2.88MB 3.5"

These items select the floppy drive type. The available settings and types supported by the motherboard

are listed to the left.

or

key to

IDE Drives

To configure the IDE drives connected to your system, select the parameter that represents the channel and port where the

desired hard disk to configure is connected. The options are:

IDE Primary Channel Master

This option lets you configure the hard disk drive connected to the master port of IDE channel 1.

IDE Primary Channel Slave

This option lets you configure the hard disk drive connected to the slave port of IDE channel 1.

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IDE Secondary Channel Master

This option lets you configure the hard disk drive connected to the master port of IDE channel 2.

IDE Secondary Channel Slave

This option lets you configure the hard disk drive connected to the slave port of IDE channel 2.

The following screen appears if you select any of the IDE Drive parameters:

IDE Primary Channel Master

Device Detection Mode [Auto]

Device Type Hard Disk

Cylinder [ 0]

Head [ 0]

Sector [ 0]

Size [ 20020 ] M.B.

Hard Disk LBA Mode [Auto]

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Device Detection Mode

Auto (Default)

User

None

If you select “Manual”, you need to fill in all remaining field, such as Cylinder, Head, and Sector on this

selected item. If the item “Auto” is selected, the items will remain “0”. And when the system boot up, system

will detect the hard disk and configure it automatically. “None” means there is no device in the channel.

Device Type

This parameter shows which type of IDE drive currently used.

Cylinder

This parameter specifies the number of cylinders of your hard disk, and is automatically set depending on your Type parameter

setting.

Head

This parameter specifies the number of heads of your hard disk, and is automatically set depending on your Type parameter

setting.

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Sector

This parameter specifies the number of sectors of your hard disk, and is automatically set depending on your Type parameter

setting.

Size

This parameter specifies the size of your hard disk, in MB.

Hard Disk LBA Mode

Hard Disk Block

Mode

Auto (Default)

Disabled

This function enhances disk performance depending on the hard disk in use. If you set this parameter to

“Auto”, the BIOS utility automatically detects if the installed hard disk drive supports the Block Mode

function. If supported, it allows data transfer in blocks (multiple sectors) at a rate of 256 bytes per cycle. To

disregard the feature, change the setting to “Disable”.

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OOnnbbooaarrdd PPeerriipphheerraallss

The Onboard Peripherals Configuration allows you to configure the onboard communication ports and the onboard devices.

Selecting this option displays the following screen:

Onboard Peripherals Serial Port 1 [Enabled] Base Address [3F8h] IRQ [4 ] Serial Port 2 [Enabled] Base Address [2F8h] IRQ [3 ]

Parallel Port [Enabled] Base Address [378h] IRQ [7 ] Operation Mode [Standard] ECP DMA Channel [--]

Floppy Disk Controller [Enabled] IDE Controller [Both] PS/2 Mouse Controller [Enabled] USB Host Controller [Enabled] USB Legacy Mode [Disabled]

Onboard IDE RAID [Enabled]

Onboard 10/100 Ethernet Chip

[Enabled]

Onboard Gigabit Ethernet C hip

[Enabled]

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Serial Ports 1 and 2

Serial Port 1 & 2

Enabled (Default)

Disabled

These parameters allow you to enable or disable serial ports 1 and 2.

Base Address

Serial Port 1:

3F8h (Default)

3E8h

2E8h

Serial Port 2:

2F8h (Default)

2E8h

3E8h

IRQ

Serial Port 1:

4 (Default), 11

Serial Port 2:

3 (Default), 10

This item allows you to assign address and interrupt for the board serial port.

This function lets you assign an interrupt for serial ports 1 and 2. The options for serial ports 1 are IRQ

4 and 11. The options for serial port 2 are IRQ 3 and 10.

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The Base Address and IRQ parameters for each port are configurable only if the port is enabled.

Parallel Port

Enabled (Default)

Disabled

Base Address

378h (Default)

3BCh

278h

IRQ

7 (Default), 5

This parameter allows you to enable or disable the parallel port.

This item allows you to assign address and interrupt for the board serial port.

This function lets you assign an interrupt for the parallel port. The options are IRQ 5 and 7.

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The Base Address and IRQ parameters are configurable only if Parallel Port is enabled.

If you install an add-on card that has a parallel port whose address conflicts with the onboard parallel port, a

warning appears on the screen.

Check the parallel port address of the add-on card and change the address to one that does not conflict.

Operation Mode

EPP (Default)

Bi-Directional

Standard

ECP

Setting Function

Standard Parallel Port (Standard) Allows normal speed one-way operation

Bi-directional Parallel Port (Bi-directional) Allows normal speed operation in a two-way mode

Enhanced Parallel Port (EPP) Allows bi-directional parallel port operation at maximum speed

Extended Capabilities Port (ECP) Allows parallel port to operate in bi-directional mode and at a speed higher than the

This item lets you set the parallel port mode. The mode options are Standard, Bi-directional, EPP

(Enhanced Parallel Port) and ECP (Extended Parallel Port).

maximum data transfer rate

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ECP DMA Channel

ECP Mode Use DMA

3

1 (Default)

This item becomes active only if you select Extended Capabilities Port (ECP) as the operation mode. It

allows you to assign DMA channel 1 or DMA channel 3 for the ECP parallel port function (as required

in Windows 95).

Floppy Disk Controller

Floppy Disk

Controller

Enabled (Default)

Disabled

IDE Controller

Both (Default)

Primary

Disabled

PS/2 Mouse Controller

PS/2 Mouse

Controller

Enabled (Default)

Disabled

This parameter lets you enable or disable the onboard floppy disk controller.

Set this parameter to “Primary” to enable only the primary IDE controller; “Both” to enable both primary

and secondary IDE controllers; or “Disabled” to disable all IDE controllers.

This parameter enables or disables the onboard PS/2 mouse controller.

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USB Host Controller

USB Host

Controller

Enabled (Default)

Disabled

USB Legacy Mode

USB Legacy

Mode

Enabled

Disabled (Default)

On-board IDE RAID

On-board IDE

RAID

Enabled (Default)

Disabled

This parameter lets you enable or disable the USB controller on board. When enabled, it activates the USB

function of the system. When disabled, it deactivates the function.

This parameter lets you enable or disable the USB controller on board. When enabled, it activates the USB

function of the system. When disabled, it deactivates the function.

This parameter lets you enable or disable the IDE RAID controller on board. When enabled, it activates the

RAID function of the system. When disabled, it also deactivates the function.

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Onboard 10/100 Ethernet Chip

On-board 10/100

Ethernet Chip

Enabled (Default)

Disabled

Onboard Ethernet Chip

On-board

Ethernet Chip

Enabled (Default)

Disabled

This parameter allows you to enable or disable the onboard network feature.

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The Power Management menu allows you to configure the system power-management feature. The following screen shows the

Power Management parameters and their default settings:

Power Management Mode [Enabled]

IDE Hard Disk Standby Timer ........................................................... [OFF]

System Sleep Timer [OFF]

Sleep Mode [------]

Power Switch < 4 sec [Power Off]

System wake-up event Modem Ring Indicator [Enabled] PCI Power Management [Enabled] RTC Alarm [Disabled]

Resume Day [--] Resume Time [--:--:--]

Restart on AC/Power Failure .......................................................... [Disabled]

Power Management

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Power Management Mode

Power

Management

Mode

Enabled (Default)

Disabled

IDE Hard Disk Standby Timer

IDE Hard Disk

Standby Timer

Off (Default)

1 to 15min

System Sleep Timer

System Sleep

Timer

Off (Default)

120, 110,

100…20, 15, 10,

5, 2min

This parameter allows you to reduce power consumption. When this parameter is set to “Enabled”, you

can configure the IDE hard disk and system timers. Setting it to “Disabled” deactivates the

power-management feature and its timers.

This parameter allows the hard disk to enter standby mode after inactivity of 1 to 15 minutes, depending on

your setting. When you access the hard disk again, allow 3 to 5 seconds (depending on the hard disk) for

the disk to return to normal speed. Set this parameter to “Off” if your hard disk does not support this

function.

This parameter sets the system to the lowest power-saving mode after a specified period of inactivity. Any

keyboard or mouse action or any activity detected from the IRQ channels resumes system operation.

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Sleep Mode

Standby

Suspend (Default)

This parameter lets you specify the power-saving mode that the system will enter after a specified period of

inactivity. The options are “Standby” and “Suspend” modes. This parameter becomes configurable only if

the System Sleep Timer is enabled. Any keyboard or mouse action, or any enabled monitored activities

occurring through the IRQ channels resume system operation.

Power Switch < 4 sec.

Power Switch < 4

Sec.

Suspend

Power Off

(Default)

When set to ”Power Off”, the system automatically turns off when the power switch is pressed for less than

4 seconds. When set to ”Suspend”, the system enters the suspend mode when pressed for less than 4

seconds.

System Wake-up Event

The system wake-up event allows the system to resume operation when the modem ring indicator is enabled.

Modem Ring Indicator

Modem Ring

Indicator

Enabled

Disabled (Default)

When “Enabled” any fax/modem activity wakes up the system from suspend mode. The default setting is

“Disabled”.

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PCI Power Management

PCI Power

Management

Enabled (Default)

Disabled

RTC Alarm

Enabled

Disabled (Default)

Resume Day

1 to 31

Resume Time

Hh:mm:ss

This item allows you to enable or disable the PCI power management function.

This item allows you to set a certain time on a certain day to wake-up the system from suspend mode.

This item is displayed when you enable the “RTC Timer” option. Here you can specify what date you want

to wake up the system. For example, setting to 15, the system will wake up on the 15

This item is displayed when you enable the RTC Wake Up Timer option. Here you can specify what time you

want to wake up the system.

th

day of every month.

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Restart On AC/Power Failure

Restart On

AC/Power Failure

Enabled

Disabled (Default)

Pre-State

When “Enabled”, the system automatically turns on when the power comes back. When “Disabled” the

system turns off and does not turn on when the power comes back. When set to “Pre-State”, the system

maintains the last power state when the power comes back.

BBoooott OOppttiioonnss

This option allows you to specify your preferred setting for boot up. The following screen appears if you select Boot Options

from the Basic Configuration menu:

Boot Option Boot Sequence 1st . [Floppy Disk A:] 2nd. [Hard Disk C:] 3rd. [IDE CD-ROM]

Primary Display Adapter……………………………………[Auto] Fast Boot…………………………………………………….[Auto] Silent Boot…………………………………….…………….[Enabled] Num Lock After Boot……………………………………… [Enabled] Memory Test……………………………………..………….[Disabled] Boot From 10/100 LANDesk( R ) Service Agent…………..[Disabled] Boot From Gigabit LANDesk( R ) Service Agent………….[Disabled]

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Boot Sequence

This parameter allows you to specify the boot search sequence during POST.

st

 1

. The system checks this drive first.

nd

. The system then checks this drive if it can not boot from the 1st specified drive.

 2

rd

 3

. If the 1st and 2nd searches fail then it boots from this drive.

BIOS will display an error message if the drive(s) specified is not bootable.

Primary Display Adapter

Primary Display

Adapter

Auto

Onboard (Default)

This parameter lets you activate the onboard video controller as your primary display adapter, or

automatically disable it once BIOS detects that there is a video card installed in your system.

Fast Boot

Auto (Default)

Disabled

This parameter allows the system to boot faster by skipping some POST routines.

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Silent Boot

Enabled (Default)

Disabled

This parameter enables or disables the Silent Boot function. When set to ”Enabled”, BIOS is in graphical

mode and displays only an identification logo during POST and while booting. After booting the screen

displays the operating system prompt (such as DOS) or logo (such as Windows 95). If any error occurs

while booting, the system automatically switches to the text mode.

Even if your setting is ”Enabled”, you may also switch to the text mode while booting by pressing

when you see the “Press DELETE key to enter setup” message on the screen.

When set to “Disabled”, BIOS is in the conventional text mode where you see the system initialization

details on the screen.

Num Lock After Boot

Num Lock After

Boot

Enabled (Default)

Disabled

This parameter allows you to activate the Num Lock function upon booting.

Memory Test

Enabled

Disabled (Default)

When set to ”Enabled”, this parameter allows the system to perform a RAM test during the POST routine.

When set to “Disabled”, the system detects only the memory size and bypasses the test routine.

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Boot from 10/100 LANDesk(R) Service Agent

Boot from 10/100

LANDesk(R)

Service Agent

Enabled

Disabled (Default)

When set to “Enabled”, this parameter allows system to boot from the LAN card.

Boot from Gigabit LANDesk(R) Service Agent

Boot from 10/100

LANDesk(R)

Service Agent

Enabled

Disabled (Default)

When set to “Enabled”, this parameter allows system to boot from the LAN card.

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The real-time clock keeps the system date and time. After setting the date and time, you do not need to enter them every time

you turn on the system. As long as the internal battery remains good (approximately seven years) and connected, the clock

continues to keep the date and time accurately even when the power is off.

Date and Time

Date………………….[Sat Aug 17,2002]

Time…………………[20:16:56]

Date

ww:mm:dd:yy

Valid values for weekday, month, day, and year are:

 Weekday: Sun, Mon, Tue, Wed, Thu, Fri, Sat

 Month: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec

Highlight the items on the Date parameter and press

weekday-month-day-year format.

or

to set the date following the

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 Day: 1 to 31

 Year: 1980 to 2079

Time

hh:mm:ss

Valid values for hour, minute, and second are:

 Hour 00 to 23

 Minute 00 to 59

 Second 00 to 59

Highlight the items on the Time parameter and press

hour-minute-second format.

76

or

to set the time following the

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The Setup program has a number of security features to prevent unauthorized access to the system and its data.

The following screen appears if you select System Security from the Main menu:

System Security

Supervisor Password……………[None]

User Password……..……………[-----]

Password on Boot…………[-----]

Disk Driver Control

Floppy Drive .……………[Normal]

Hard Disk Drive …………[Normal]

Supervisor Password

Supervisor

Password

None (Default)

Present

This item can prevent unauthorized access to the BIOS utility. The “Present” setting allows you to set a

setup password.

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Supervisor Password

Enter your Password twice Password may be up to 7 characters

long.

Enter Password……………………………[ ]

Enter Password again…………………… [ ]

Set or Change Password

1. Enable the Supervisor Password parameter in the System Security menu by pressing the ENTER key. The Supervisor

Password windows will appear as shown above.

2. Type a password. The password may consist of up to seven characters.

Be very careful when typing your password because the actual characters do not appear on the screen.

3. Press the ENTER key. Re-type the password to verify your first entry then press ENTER key again.

4. Highlight the “Set or change password” option and press ENTER key.

5. Press the ESC key to return the System Security screen.

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6. Press the ESC key to exit setup. The Exit Setup screen will appear.

7. Choose “Ye s” to save your setting and exit Setup. Your password will be saved to CMOS.

8. If you want to remove the password, please select “Disabled” to disable this function.

User Password

None (Default)

Present

This item can secure your system against unauthorized use. Once you set this password, you have to type

it before you access to normal operation on the system. This item is available only when Supervisor

Password is set.

Password on Boot

Password on

Boot

None (Default)

Present

If you set this password, the system will request you the password while booting. This password is

available only when user password is set.

Disk Drive Control

The disk drive control features allow you to control the floppy drive or the hard disk drive boot function to prevent loading

operating systems or other programs from a certain drive while the other drives are operational (under DOS mode only).

The table below lists the drive control settings and their corresponding functions.

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Floppy Drive

Setting Description

Normal Floppy drive functions normally

Write Protect All Sectors Disables the write function on all sectors

Write Protect Boot Sector Disables the write function only on the boot sector

Hard Disk Drive

Setting Description

Normal Hard disk drive functions normally

Write Protect All Sectors Disables the write function on all sectors

Write Protect Boot Sector Disables the write function only on the boot sector

HHeeaalltthh MMoonniittoorr

The system event log enables you to record and monitor events that occur in your system like system temperature, fan stops,

and others. This feature allows you to specify the appropriate settings for your system’s event handling. Selecting the option

displays the following screen:

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Health Monitor

Event Logging Event Logging…………………………[Enabled] Clear Event Logs………………………[Disabled] Total Number of Event Logs ………… 12 Remain of Event Log Area …...……… 93% . View Event Logs Hardware Monitor . Health Monitor Status Temperature/Voltage/Fan………………[Disabled] CPU Fan………………………...[-----------] 1st System Fan…………………[-----------] 2nd System Fan………………..[-----------] Memory ECC………………………….[Enabled] Threshold Setting CPU Temperature………………………[ 70 ] °C [158] °F CPU Core Voltage……………………….1.50 V CPU Voltage……………………………..[±0.2] V +3.3 V…………………………………….[±0.4]V +3.3 V Standby.………………………….[ ±0.7] V +5 V…………………………………….…[ ±0.6] V +5 V Standby…………………………….[ ±0.6] V +12 V……………………………………..[ ±0.7] V Vbat……………………………………….[±0.3] V Cpu Fan…………………………………..[2000] RPM System Fan……………………………….[2000] RPM POST Event Action Power off if Fan Fail……………………..[Disabled] Poewr off if CPU Temperature too High…[Disabled] Alert Beep When Log an Event…………….. [Disabled]

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Event Logging

This option allows you to record monitored events that occur during the operation of your system.

Event Logging

Enabled (Default)

Disabled

Clear Event Logs

Enabled

Disabled (Default)

Total Number of Event Logs

Total Number of

Event Logs

Remain of Event Log Area

Available Space

for Event Logs

This item allows you to enable or disable the system event logging function.

This item allows you to enable or disable the system event logs clearing function. Please enable it if you

want to clear the event log whenever the event log area is full.

The currently number of events located in the event log area.

The percentage of space that is still available for logging system events.

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View Event Logs

Opens the system event log file for viewing.

Hardware Monitor

This parameter monitors the hardware status such as fan and memory information.

Health Monitor Status

Health Monitor

Status

Health Monitor Status CPU Temperature…………………………………………………….[0038] CPU Core Voltage……………………………………………………1.50 V CPU Voltage…………………………………………………………. [1.50] V CPU Fan………………………………………………………………[N/A] RPM +3.3 V…………………………………………………………………[3.37] V +3.3 V standby ………………………………………………………[3.42] V +5 V…………………………………………………………………...[5.08] V +5 V Standby………………………………………………………...[5.10] V +12 V………………………………………………………………….[12.22] V Vbat……………………………………………………………………[3.28] V System Temperature………………………………………………..[0040] °C 1st System Fan………………………………………………………[N/A] 2nd System Fan……………………………………………………..[0000] RPM

Represents the system information.

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Temperature/Voltage/Fan

Temperature/Volt

age/ Fan

Enabled (Default)

Disabled

Memory ECC

ECC

Enabled (Default)

Disabled

Threshold

SettingThreshold

Setting

Enable or disable the monitoring of the system’s temperature, voltage, and CPU fan.

ECC or Error-Correcting Code tests the accuracy of data as it passes in and out of memory. This

parameter enables or disables the monitoring of this function.

This parameter allows you to set CPU temperature, core voltage and fan threshold values.

POST Event Action

Power off if Fan Fail

Power off if Fan

Fail

This parameter allows you to enable or disable the automatic power off when fan fails working.

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Power off if Fan Fail

Power off if CPU

Temperature too

High

This parameter allows you to enable or disable the automatic power off when CPU temperature is too high.

Alert Beep When Log an Event

Alert Beep When

Log an Event

This parameter allows you to enable or disable an alert beep when a log is produced.

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LLooaadd DDeeffaauulltt SSeettttiinnggss

Use this option to load the default settings for the optimized system configuration. When you load the default settings, some of

the parameters are grayed-out with their fixed settings. These grayed parameters are not user-configurable.

The following dialog box appears when you select Load Default Settings from the main menu:

Load Default Settings

Do you want to load default settings?

[ YES] [NO]

Select “Yes” to load the default settings.

Select “No” to ignore the message and return to the BIOS utility.

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AAbboorrtt SSeettttiinnggss CChhaannggee

Use this option to disregard your changes to the BIOS and reload your previous settings.

The following dialog box appears when you select Abort Settings Change from the main menu:

Abort Settings Changes

Do you want to abort settings changes?

[ YES] [NO]

Select “Yes” to disregard your changes and reload your previous settings. After reload, the main menu appears on screen.

Select “No” to ignore the message and return to the BIOS utility.

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EExxiitt SSeettuupp

Use this option to exit the BIOS utility.

Exit Setup

Settings have been changed.

Do you want to save CMOS setting?

[YES] [NO]

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OOvveerrcclloocckkiinngg

As a leading manufacturer in motherboard industry, AOpen always listens to what customers want and develop products to fit

different user's requirements. Reliability, compatibility, leading technology and friendly features are our basic goals when

designing motherboards. Other than above mentioned design criteria, there are power users who are always seeking to push

the limitation of the system performance by overclocking which we call them "Overclocker".

This section is dedicated to overclockers.

This high performance motherboard is designed for maximum 533MHz CPU bus clock. But it comes with clock generator of

248MHz when we design it to accommodate with future CPU bus clock. Our lab test results showed that 120MHz is achievable

when proper setting and qualified components were presented. Not only that, the CPU clock ratio can be up to 24x that supports

almost all of Pentium

feel appropriate for this motherboard is 120MHz bus clock.

But not guaranty. ☺

Tip: Note that overclocking may also

cause thermal problem. Please make

sure that the cooling fan and the

heatsink were adequate to dissipate

excessive heat that's generated by

overclocking the CPU.

®

4 CPUs in the future and provides flexibility for overclockers. For your reference, the configuration we

☺

☺☺

Warning: The design of this product follows CPU and chipset vendor's

design guideline. Any attempts to push beyond product specification are

not recommended and you are taking your own risk to damage your

system or important data. Before doing overclocking, you must make sure

your components are able to tolerate such abnormal setting, especially

CPU, DRAMs, hard disks, and AGP VGA cards.

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VVGGAA CCaarrdd && HHaarrdd DDiisskk

VGA and HDD is key components for overclocking, for your reference, the following list are what have been successful

overclocked in our lab. Please note that AOpen can not guaranty they can be successful overclocked again. Please check the

Available Vendor List (AVL) by link to our official website.

VGA: http://www.aopen.com.tw/tech/report/overclk/mb/vga-oc.htm

HDD: http://www.aopen.com.tw/tech/report/overclk/mb/hdd-oc.htm

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GGlloossssaarryy

AACC9977

Basically, AC97 specification separates sound/modem circuit to two parts, digital processor and a CODEC for analogy I/O they

are linked by AC97 link bus. Since digital processor can be put into motherboard main chipset, the cost of sound/modem

onboard solution can be reduced.

AACCPPII ((AAddvvaanncceedd CCoonnffiigguurraattiioonn && PPoowweerr IInntteerrffaaccee))

ACPI is the power management specification of PC97 (1997). It intends to save more power by taking full control of power

management to operating system and bypass BIOS

to operating system (such as Windows 98). This is a bit similar as the PnP

power switch to control the power state transition.

AAGGPP ((AAcccceelleerraatteedd GGrraapphhiicc PPoorrtt))

AGP is a bus interface targeted for high-performance 3D graphic. AGP supports only memory read/write operation and

single-master single-slave one-to-one only. AGP uses both rising and falling edge of the 66MHz clock, for 2X AGP, the data

transfer rate is 66MHz x 4byte x 2 = 528MB/s. AGP is now moving to 4X mode, 66MHz x 4byte x 4 = 1056MB/s. AOpen is the

first company to support 4X AGP motherboards by both AX6C (Intel 820) and MX64/AX64 (VIA 694x), started from Oct 1999.

. The chipset or super I/O chip needs to provide standard register interface

register interface. ACPI defines ATX momentary soft

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AAMMRR ((AAuuddiioo//MMooddeemm RRiisseerr))

The CODEC circuit of AC97 sound/modem solution can be put on motherboard or put on a riser card (AMR card) that connects

to motherboard through AMR connector.

AAOOppeenn BBoonnuuss PPaacckk CCDD

A disc bundled with AOpen motherboard product; there are motherboard drivers, Acrobat Reader for PDF online manual and

other useful utilities.

AAPPMM ((AAddvvaanncceedd PPoowweerr MMaannaaggeemmeenntt))

Unlike ACPI, BIOS controls most APM power management functions. AOpen Suspend to Hard Drive is a good example of APM

power management.

AATTAA ((AATT AAttttaacchhmmeenntt))

ATA is the specification of diskette interface. In 80’s, many software and hardware manufacturers instituted the ATA specification

together. The AT is meaning International Business Machines Corporation (IBM) personal computer/AT’s bus structure.

AATTAA//6666

ATA/66 uses both rising edge and falling edge but doubles UDMA/33 transfer rate. The data transfer rate is 4 times of the PIO

mode 4 or DMA mode 2, 16.6MB/s x4 = 66MB/s. To use ATA/66, you need special ATA/66 IDE cable.

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AATTAA//110000

ATA/100 is a new IDE specification under developing. ATA/100 uses both rising edge and falling edge as ATA/ 66 but clock cycle

time is reduced to 40ns. The data transfer rate is (1/40ns) x 2 bytes x 2 = 100MB/s. To use ATA/100, you need special 80-wire

IDE cable, the same as ATA/66.

BBIIOOSS ((BBaassiicc IInnppuutt//OOuuttppuutt SSyysstteemm))

BIOS is a set of assembly routine/program that reside in EPROM or Flash ROM. BIOS controls Input/output devices and other

hardware devices of motherboard. In general, to provide hardware independent portability, operation system and drivers is

required to access BIOS without directly access hardware devices.

BBuuss MMaasstteerr IIDDEE ((DDMMAA mmooddee))

The traditional PIO (Programmable I/O) IDE requires the CPU to involve in all the activities of the IDE access including waiting

for the mechanical events. To reduce the workload of the CPU, the bus master IDE device transfers data from/to memory

without interrupting CPU, and releases CPU to operate concurrently while data is transferring between memory and IDE device.

You need the bus master IDE driver and the bus master IDE HDD to support bus master IDE mode.

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CCNNRR ((CCoommmmuunniiccaattiioonn aanndd NNeettwwoorrkkiinngg RRiisseerr))

The CNR specification provides the PC industry the opportunity to deliver a flexible and cost reduced method of implementing

LAN, home networking, DSL, USB, wireless, audio and modem subsystems widely used in today's "connected PCs". The CNR

specification is an open industry specification and is supported by OEMs, IHV card manufacturers, silicon supplier and

Microsoft.

CCOODDEECC ((CCooddiinngg aanndd DDeeccooddiinngg))

Normally, CODEC means a circuit that can do digital to analog conversion and also the analog to digital conversion. It is part of

sound/modem solution.

AC97

DDDDRR ((DDoouubbllee DDaattaa RRaatteedd)) SSDDRRAAMM

DDR SDRAM utilizes the existing DRAM infrastructure and technology while doubling the nominal bandwidth available to

systems in an easy to design and simple to adopt way. Initially a perfect solution for memory intensive server and workstation

applications, DDR low cost and low voltage will ultimately make it an ideal solution for all segments of the PC market, high

performance desktop and mobile PCs, Value PCs and even Internet Appliances and mobile devices.

DDIIMMMM ((DDuuaall IInn LLiinnee MMeemmoorryy MMoodduullee))

DIMM socket has total 168-pin and supports 64-bit data. It can be single or double side, the golden finger signals on each side

of PCB are different, and that is why it was called Dual In Line. Almost all DIMMs are made by SDRAM

Note that some old DIMMs are made by FPM/EDO

and only operate at 5V. Do not confuse them with SDRAM DIMM.

, which operate at 3.3V.

94

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DDMMAA ((DDiirreecctt MMeemmoorryy AAcccceessss))

Channel for communications between the memory and surrounding devices.

EECCCC ((EErrrroorr CChheecckkiinngg aanndd CCoorrrreeccttiioonn))

The ECC mode needs 8 ECC bits for 64-bit data. Each time memory is accessed; ECC bits are updated and checked by a

special algorithm. The ECC algorithm has the ability to detect double-bit error and automatically correct single-bit error while

parity mode can only detect single-bit error.

EEDDOO ((EExxtteennddeedd DDaattaa OOuuttppuutt)) MMeemmoorryy

The EDO DRAM technology is actually very similar to FPM (Fast Page Mode). Unlike traditional FPM that tri-states the memory

output data to start the pre-charge activity, EDO DRAM holds the memory data valid until the next memory access cycle, that is

similar to pipeline effect and reduces one clock state.

EEEEPPRROOMM ((EElleeccttrroonniicc EErraassaabbllee PPrrooggrraammmmaabbllee RROOMM))

Also known as E2PROM. Both EEPROM and Flash ROM can be re-programmed by electronic signals, but the interface

technology is different. Size of EEPROM is much smaller than flash ROM.

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EEPPRROOMM ((EErraassaabbllee PPrrooggrraammmmaabbllee RROOMM))

Traditional motherboard stores BIOS code in EPROM. EPROM can only be erased by ultra-violet (UV) light. If BIOS has to be

upgraded, you need to remove EPROM from motherboard, clear by UV light, re-program, and then insert back.

EEVV66 BBuuss

EV6 Bus in the technology of Alpha processor from Digital Equipment Corporation. EV6 bus uses both rising and falling clock

edge to transfer data, similar as DDR SDRAM or ATA/66 IDE bus.

EV6 Bus Speed = CPU external bus clock x 2.

For example, 200 MHz EV6 bus is actually using 100 MHz external bus clock, but the equivalent speed is 200 MHz.

FFCCCC DDooCC ((DDeeccllaarraattiioonn ooff CCoonnffoorrmmiittyy))

The DoC is component certification standard of FCC EMI regulations. This standard allows DIY component (such as

motherboard) to apply DoC label separately without a shielding of housing.

FFCC--PPGGAA ((FFlliipp CChhiipp--PPiinn GGrriidd AArrrraayy))

FC means Flip Chip, FC-PGA is a new package of Intel for Pentium III CPU. It can plug into SKT370 socket, but require

motherboard to add some signals on socket 370. That is, the motherboard needs to be redesigned. Intel is going to ship

FC-PGA 370 CPU and phase out slot1 CPU.

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FFllaasshh RROOMM

Flash ROM can be re-programmed by electronic signals. It is easier for BIOS to upgrade by a flash utility, but it is also easier to

be infected by virus. Because of increase of new functions, BIOS size is increased from 64KB to 256KB (2M bit). AOpen AX5T is

the first board to implement 256KB (2Mbit) Flash ROM. Now flash ROM size is moving to 4M bit on AX6C (Intel 820) and MX3W

(Intel 810) motherboard. , AOpen motherboard uses EEPROM for jumper-less and battery-less design.

FFSSBB ((FFrroonntt SSiiddee BBuuss)) CClloocckk

FSB Clock means CPU external bus clock.

CPU internal clock = CPU FSB Clock x CPU Clock Ratio

2

I

CC BBuuss

See SMBus.

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IIEEEEEE 11339944

IEEE 1394 is a low-cost digital interface originated by Apple Computer as a desktop LAN and developed by the IEEE 1394

working group. The IEEE 1394 can transport data at 100, 200 or 400 Mbps. One of the solutions to connect digital television

devices together at 200 Mbps. Serial Bus Management provides overall configuration control of the serial bus in the form of

optimizing arbitration timing, guarantee of adequate electrical power for all devices on the bus, assignment of isochronous

channel ID, and notification of errors. There are two type of IEEE 1394 data transfer: asynchronous and isochronous.

Asynchronous transport is the traditional computer memory-mapped, load and store interface. Data requests are sent to a

specific address and an acknowledgment is returned. In addition to an architecture that scales with silicon technology, IEEE

1394 features a unique isochronous data channel interface. Isochronous data channels provide guaranteed data transport at a

pre-determined rate. This is especially important for time-critical multimedia data where just-in-time delivery eliminates the need

for costly buffering.

PPaarriittyy BBiitt

The parity mode uses 1 parity bit for each byte, normally it is even parity mode, that is, each time the memory data is updated,

parity bit will be adjusted to have even count "1" for each byte. When next time, if memory is read with odd number of "1", the

parity error is occurred and this is called single bit error detection.

PPBBSSRRAAMM ((PPiippeelliinneedd BBuurrsstt SSRRAAMM))

For Socket 7 CPU, one burst data read requires four QWord (Quad-word, 4x16 = 64 bits). PBSRAM only needs one address

decoding time and automatically sends the remaining QWords to CPU according to a predefined sequence. Normally, it is

3-1-1-1, total 6 clocks, which is faster than asynchronous SRAM. PBSRAM is often used on L2 (level 2) cache of Socket 7 CPU.

Slot 1 and Socket 370 CPU do not need PBSRAM.

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PPCC--110000 DDIIMMMM

SDRAM DIMM that supports 100MHz CPU FSB bus clock.

PPCC--113333 DDIIMMMM

SDRAM DIMM that supports 133MHz CPU FSB bus clock.

PPCC--11660000 oorr PPCC--22110000 DDDDRR DDRRAAMM

Based on FSB frequency, the DDR DRAM has 200MHz and 266MHz two type of working frequency. Because of DDR DRAM

data bus is 64-bit, it provides data transfer bandwidth up to 200x64/8=1600MB/s, and 266x64/8=2100MB/s. Hence, the PC-1600

DDR DRAM is working with 100MHz and PC-2100 DDR DRAM is working with 133MHz FSB frequency.

PPCCII ((PPeerriipphheerraall CCoommppoonneenntt IInntteerrffaaccee)) BBuuss

Bus for the internal connection of peripheral devices, high-speed data channel between the computer and expansion card.

PPDDFF FFoorrmmaatt

A file format for electronic document, PDF format is independent from platform, you can read PDF file under Windows, Unix,

Linux, Mac … with different PDF reader. You can also read PDF file by web browser such as IE and Netscape, note that you

need to install PDF plug-in first (Included in Acrobat Reader).

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PPnnPP ((PPlluugg aanndd PPllaayy))

The PnP specification suggests a standard register interface for both BIOS and operating system (such as Windows 95). These

registers are used by BIOS and operating system to configure system resource and prevent any conflicts. PnP BIOS or

operating system will automatically allocate the IRQ/DMA/Memory. Currently, almost all the PCI cards and most ISA cards are

already PnP compliant.

PPOOSSTT ((PPoowweerr--OOnn SSeellff TTeesstt))

The BIOS self-test procedure after power-on, sometimes, it is the first or the second screen shown on your monitor during

system boot.

RRDDRRAAMM ((RRaammbbuuss DDRRAAMM))

Rambus is a memory technology that uses large burst mode data transfer. Theoretically, the data transfer should be high than

SDRAM

. RDRAM is cascaded in channel operation. For Intel 820, only one RDRAM channel is supported, 16-bit data per

channel, and this channel may have maximum 32 RDRAM devices, no matter how many RIMM

RRIIMMMM ((RRaammbbuuss IInnlliinnee MMeemmoorryy MMoodduullee))

184-pin memory module that supports RDRAM memory technology. A RIMM memory module may contain up to maximum of 16

RDRAM devices.

sockets.

100

AOpen AX4BRU User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

AX4BR-U

Chipset

Expansion Slots

Memory

Ultra DMA 33/66/100 Bus Master IDE

Four USB Connectors

Power Management/Plug and Play

Hardware Monitoring Management (RAS)

Enhanced ACPI

Super Multi-I/O

Motherboard Map

Processor

Processor Speed

CPU/SDRAM BUS Frequency

Level 1 Cache

Level 2 Cache

Diskette Drive A

IDE Primary Channel

IDE Secondary Channel

Total Mem o r y

Serial Port 1

Serial Port 2

Parallel Port

PS/2 Mouse

Product Information

Product Name

System S/N

Main Board ID

Main Board S/N

System BIOS Version

SMBIOS Version

Disk Drives

Floppy Drives

IDE Drives

Device Detection Mode

Device Type

Cylinder

Head

Sector

Size

Hard Disk LBA Mode

Onboard Peripherals Serial Port 1 [Enabled] Base Address [3F8h] IRQ [4 ] Serial Port 2 [Enabled] Base Address [2F8h] IRQ [3 ]

Serial Ports 1 and 2

Power Management

Date and Time

System Security

Load Default Settings

Exit Setup