User Guide

Motherboard

Checklist

Revised Edition 1.02 (August 2001)
Copyright 2001 ASUSTeK COMPUTER INC. All Rights Reserved. No part of this manual, including the products and software described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except documentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK COMPUTER INC. (ASUS). Product warranty or service will not be extended if: (1) the product is repaired, 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. ASUS PROVIDES THIS MANUAL AS IS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS, LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL OR PRODUCT. SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT. Products and corporate names appearing in this manual may or may not be registered trademarks or copyrights of their respective companies, and are used only for identification or explanation and to the owners benefit, without intent to infringe.

Contents

FCC/CDC statements... vi Safety information... vii About this guide... viii How this guide is organized.. viii Conventions used in this guide.. ix Where to find more information... ix ASUS contact information... x

Features

Chapter 1: Product introduction.. 1-1
1.1 1.2 1.3 Welcome!... Package contents... Overview.... 1.3.1 Identifying the motherboard components. 1.3.2 Pre-installed accessory.. Special features... 1-1 1-1 1-2 1-2 1-5 1-6
Chapter 2: Hardware information.. 2-1
2.1 Motherboard installation.. 2-1 2.1.1 Placement direction.. 2-1 2.1.2 Screw holes.. 2-1 Motherboard layout... 2-2 Before you proceed... 2-3 Central Processing Unit (CPU).. 2-4 2.4.1 Overview... 2-4 2.4.2 Installing the CPU... 2-5 2.4.3 Installing the heatsink and fan.. 2-7 2.4.4 Connecting the CPU fan cable.. 2-9 System memory... 2-10 2.5.1 Overview.. 2-10 2.5.2 Memory configurations... 2-10 2.5.3 Installing a DIMM... 2-11 2.5.4 Removing a DIMM.. 2-12 Expansion slots... 2-13 2.6.1 Installing an expansion card.. 2-13 2.6.2 Configuring an expansion card.. 2-14 2.6.3 PCI slots... 2-15

2.2 2.3 2.4

Safeguards
2.6.4 AGP slot... 2.6.5 CNR slot... Switches and jumpers.. 2.7.1 Switch settings.. 2.7.2 Jumper settings.. Connectors...
2-15 2-16 2-17 2-17 2-18 2-22
Chapter 3: Powering up.. 3-1
3.1 3.3 Starting up for the first time.. 3-1 Powering off the computer... 3-2
Chapter 4: BIOS setup.. 4-1
4.1 Managing and updating your BIOS.. 4-1 4.1.1 Using the computer system for the first time. 4-1 4.1.2 Updating BIOS procedures.. 4-3 BIOS Setup program... 4-5 4.2.1 BIOS menu bar.. 4-6 4.2.2 Legend bar... 4-6 Main Menu... 4-8 4.3.1 Primary and Secondary Master/Slave. 4-9 4.3.2 Keyboard Features.. 4-13 Advanced Menu... 4-15 4.4.1 Chip Configuration.. 4-17 4.4.2 I/O Device Configuration.. 4-19 4.4.3 PCI Configuration.. 4-21 Power Menu... 4-24 4.5.1 Power Up Control.. 4-26 4.5.2 Hardware Monitor.. 4-28 Boot Menu.. 4-29 Exit Menu... 4-31

4.6 4.7

Chapter 5: Software support.. 5-1
5.1 5.2 Install an operating system.. 5.1.1 Windows 98 first time installation.. Support CD information.. 5.2.1 Running the support CD... 5.2.2 Main menu... 5-1 5-1 5-1 5-1 5-2
5.2.3 Software menu.. 5.2.4 Drivers menu... 5.2.5 DOS Utilities menu.. 5.2.6 ASUS Contact Information.. 5.2.7 Other information.. Software information... 5.3.1 ASUS Update.. 5-3 5-5 5-6 5-6 5-7 5-9 5-9
Glossary... G-1 Index... I-1

Operation safety

Before installing the motherboard and adding devices on it, carefully read all the manuals that came with the package. Before using the product, make sure all cables are correctly connected and the power cables are not damaged. If you detect any damage, contact your dealer immediately. To avoid short circuits, keep paper clips, screws, and staples away from connectors, slots, sockets and circuitry. Avoid dust, humidity, and temperature extremes. Do not place the product in any area where it may become wet. Place the product on a stable surface. If you encounter technical problems with the product, contact a qualified service technician or your retailer.

About this guide

This user guide contains the information you need when installing the ASUS P4B-M motherboard.
How this guide is organized
This manual contains the following parts: Chapter 1: Product introduction This chapter describes the features of the P4B-M motherboard. It includes brief descriptions of the special attributes of the motherboard and the new technology it supports. Chapter 2: Hardware information This chapter lists the hardware setup procedures that you have to perform when installing system components. It includes description of the switches, jumpers, and connectors on the motherboard. Chapter 3: Powering up This chapter describes the power up sequence and gives information on the BIOS beep codes. Chapter 4: BIOS setup This chapter tells how to change system settings through the BIOS Setup menus. Detailed descriptions of the BIOS parameters are also provided. Chapter 5: Software support This chapter describes the contents of the support CD that comes with the motherboard package. Glossary This part lists the technical terms that you may encounter when reading this document. Index This part contains an alphabetical list of the topics found in this document.
Conventions used in this guide
To make sure that you perform certain tasks properly, take note of the following symbols used throughout this manual. WARNING: Information to prevent injury to yourself when trying to complete a task. CAUTION: Information to prevent damage to the components when trying to complete a task. IMPORTANT: Information that you MUST follow to complete a task. NOTE: Tips and additional information to aid in completing a task.
Where to find more information
Refer to the following sources for additional information and for product and software updates. 1. ASUS Websites The ASUS websites worldwide provide updated information on ASUS hardware and software products. The ASUS websites are listed in the ASUS Contact Information on page x. 2. Optional Documentation Your product package may include optional documentation, such as warranty flyers, that may have been added by your dealer. These documents are not part of the standard package.

ASUS P4B-M motherboard user guide

Over view

Before you install the P4B-M motherboard, take some time to familiarize yourself with its physical configuration and available features. This will facilitate the motherboard installation and future upgrades. A sufficient knowledge of the motherboard specifications will also help you avoid mistakes that may damage the board and its components. This section presents the motherboard components and points out their specific locations. A brief description of each component follows. Refer to Chapter 2 for detailed information on these components.
1.3.1 Identifying the motherboard components

Figure 1-1

Motherboard Components
Proceed to the succeeding pages for a brief description of each component.
Chapter 1: Product introduction
CPU socket. A 478-pin surface mount, Zero Insertion Force (ZIF) socket called mPGA478 B. This socket accommodates the Intel Pentium 4 478/Northwood Processor with 400MHz system bus. North bridge controller. This controller called the Intel Memory Controller Hub (MCH) is one of the two major components of the Intel 845 (Brookdale) chipset. The MCH along with the south bridge Intel I/O Controller Hub 2 (ICH2) are interconnected through the Intel proprietary Hub interface. The MCH provides the processor interface, system memory interface, AGP interface, and Hub Interface. SDRAM DIMM sockets. These three 168-pin DIMM sockets support up to 3GB using unbuffered ECC or non-ECC PC100/133 SDRAM DIMMs. ATX power connector. This 20-pin connector connects to an ATX 12V power supply. The power supply must have at least 1A on the +5V standby lead (+5Vsb). Super I/O chipset. This Low Pin Count (LPC) interface provides the commonly used Super I/O functionality. The chipset supports a high-performance floppy disk controller for a 360K/720K/1.44M/ 2.88M floppy disk drive, a multi-mode parallel port, two standard compatible UARTs, a Standard Infrared (SIR), one MPU-401 UART mode compatible MIDI/game port, and a Flash ROM interface. IDE connectors. These dual-channel bus master IDE connectors support up to four Ultra DMA/100/66, PIO Modes 3 & 4 IDE devices. Both the primary (blue) and secondary (black) connectors are slotted to prevent incorrect insertion of the IDE ribbon cable. Floppy disk connector. This connector accommodates the provided ribbon cable for the floppy disk drive. One side of the connector is slotted to prevent incorrect insertion of the floppy disk cable. Flash EEPROM. This 2Mb firmware contains the programmable BIOS program. DIP switches. This 10-switch Dual Inline Package (DIP) allows you to set the CPU external frequency.

Motherboard installation
Before you install the motherboard, study the configuration of your chassis to ensure that the motherboard fits into it. The P4B-M uses the micro-ATX form factor that measures 9.6 inches x 9.6 inches, a standard fit for most chassis.
Make sure to unplug the power cord before installing or removing the motherboard. Failure to do so may cause you physical injury and damage motherboard components.
2.1.1 Placement direction
When installing the motherboard, make sure that you place it into the chassis in the correct orientation. The edge with external ports goes to the rear part of the chassis. Refer to the image below.

2.1.2 Screw holes

Place eight (8) screws into the holes indicated by circles to secure the motherboard to the chassis.
Do not overtighten the screws! Doing so may damage the motherboard.
Place this side towards the rear of the chassis

Figure 2-1

Motherboard placement and screw holes

Motherboard layout

24.4cm (9.60in)

PS/2KBMS

T: Mouse B: Keyboard

USBPWR01 CPU_FAN

Bottom:
DIMM Socket 1 (64/72-bit, 168-pin module)
DIMM Socket 2 (64/72-bit, 168-pin module)
DIMM Socket 3 (64/72-bit, 168-pin module)

USB1 RJ-45 USB2

Socket 478

Super I/O

IR_CON

ATX Power Connector

PARALLEL PORT

SMARTCON

ATX12V

Intel 845

Memory Controller Hub (MCH)

GAME_AUDIO

Line Out Line In

SECONDARY IDE

Realtek RTL8100

Mic In

Accelerated Graphics Port (AGP)

SERIRQ_CON

2Mbit Firmware Hub
LAN_EN BCS1 BCS2 AUX MIC HPHONE

INT_LINEIN CD SPDIF_C

PCI1 PCI2
CR2032 3V Lithium Cell CMOS Power
Intel I/O Controller Hub (ICH2)

CLEAR CMOS

DIP_SW

BUZZER

C-Media
CMI8738 6CH Audio Controller

CNR_SLOT

ASUS ASIC
USBPWR23 CNRUSB0 CNRUSB1 USB23 PANEL HDDLED

Figure 2-2

Motherboard Layout
The audio controller, external GAME/AUDIO connectors, internal audio connectors are optional components, and present in audio models only. The components are grayed out in the above motherboard layout.
Chapter 2: Hardware information

FLOPPY

SYSTEM_FAN

PRIMARY IDE

24.4cm (9.6in)

Before you proceed

Take note of the following precautions before you install motherboard components or change any motherboard settings.
1. Unplug the power cord from the wall socket before touching any component. 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 components to avoid damaging them due to static electricity. 3. Hold components by the edges and do not to touch the ICs on them. 4. Whenever you uninstall any component, place it on a grounded antistatic pad or in the bag that came with the component. 5. Before you install or remove any component, ensure that the ATX power supply is switched off or the power cord is detached from the power supply. Failure to do so may cause severe damage to the motherboard, peripherals, and/or components.

Standard Infrared (SIR) Front View Back View
IRTX GND IRRX KBPWR KBPWR CIRRX GND CIRTX

SIR CIR

IRTX GND IRRX

+5V (NC)

P4B-M Infrared Module Connector

Figure 2-34

Infrared Module Connector
7. Power supply connectors (20-pin ATXPWR, 4-pin ATX+12V) These connectors connect to an ATX 12V power supply. The plugs from the power supply are designed to fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit. In addition to the 20-pin ATXPWR connector, this motherboard requires that you connect the 4-pin ATX +12V power plug to provide sufficient power to the CPU.
Make sure that your ATX 12V power supply can provide 8A on the +12V lead and at least 1A on the +5-volt standby lead (+5VSB). The minimum recommended wattage is 230W, or 300W for a fully configured system. The system may become unstable and may experience difficulty powering up if the power supply is inadequate.
+12.0VDC +5VSB PWR_OK COM +5.0VDC COM +5.0VDC COM +3.3VDC +3.3VDC +5.0VDC +5.0VDC -5.0VDC COM COM COM PS_ON# COM -12.0VDC +3.3VDC

ATXPWR

+12V DC
P4B-M ATX Power Connectors

Figure 2-35

Power Supply Connectors
8. Internal audio connectors (4-pin CD1, AUX, MODEM) (optional) These connectors allow you to receive stereo audio input from sound sources such as a CD-ROM, TV tuner, or MPEG card. The MODEM connector allows the onboard audio to interface with a voice modem card with a similar connector. It also allows the sharing of mono_in (such as a phone) and a mono_out (such as a speaker) between the audio and a voice modem card.

AUX (White) CD (Black)

Left Audio Channel Ground Ground Right Audio Channel
Modem-Out Ground Ground Modem-In
P4B-M Internal Audio Connectors

Figure 2-36

Internal Audio Connectors
9. Headphone true-level line out connector (3-pin HPHONE) (optional) This connector connects to an optional front panel audio module using a 3-pin audio cable. If your chassis has this audio module, you can connect a headphone/speaker on the front panel.

HPHONE

P4B-M True-Level Line Out Connector

Figure 2-37

Headphone True-level Line Out Connector
Left Headphone GND Right Headphone
10. Internal microphone connector (3-pin INT_MIC) (optional) This connector connects to an optional front panel audio module using a 3-pin audio cable. If your chassis has this audio module, you can connect a headphone/speaker on the front panel.
The front panel microphone may not work properly if there is another microphone connected to the Microphone (pink) jack on the rear panel. You may only use one microphone at a time.

INT_MIC

MIC Power MIC Input Ground
P4B-M Internal Microphone Connector

Figure 2-38

Internal Microphone Connector
11. Internal line in connector (3-pin INT_LINEIN) (optional) This connector connects to an optional front panel audio module using a 3-pin audio cable. If your chassis has this audio module, you can connect audio sources on the front panel.

INT_LINEIN

Left Channel

Right Channel

P4B-M Line In Connector

Figure 2-39

Internal Line In Connector
12. Digital audio connector (6-1 pin SPDIF_C) (optional) This connector connects an SPDIF audio module that allows digital instead of analog sound output. Connect one end of the audio cable to the SPDIF_C connector on the motherboard, and the other end to an SPDIF module that you purchased separately.

SPDIF_C

SPDIF_OUT SPDIF_IN
P4B-M Digital Audio Connector

SPDIF Module

Figure 2-40

Digital Audio Connector

The SPDIF audio module does not come with the motherboard package. This module is purchased separately.
13. Serial IRQ connector (2-pin SERIRQ_CON) (optional) This connector connects the serial IRQ onboard. Some PCI cards, such as those with PCMCIA function, require this feature.

SERIRQ GND

P4B-M SERIRQ Connector

Figure 2-41

Serial IRQ Connector
14. Smart Card Reader connector (14-1 pin SMARTCON) (optional) This connector accommodates a Smart Card Reader that allows you to conveniently make transactions such as financial, health care, telephony, or traveling services through a Smart Card user interface software.
SCRRES# SCRUI RFU2 SCRREST NC LED
NC2 GND RFU1 SCRCLK SCRFET# NC VCC
P4B-M Smart Card Connector

Figure 2-42

Smart Card Reader Connector
15. System panel connector (20-pin PANEL) This connector accommodates several system front panel functions.

IDELED

PLED IDELED+ IDELED-
+5 V MLED ExtSMI# Ground PWR Ground

Message LED

Reset SW ATX Power Switch*

SMI Lead

* Requires an ATX power supply.
P4B-M System Panel Connectors

Figure 2-43

System Panel Connector
System Power LED Lead (3-1 pin PWR.LED) This 3-1 pin connector connects to the system power LED. The LED lights up when you turn on the system power, and blinks when the system is in sleep mode. Hard Disk LED Lead (2-pin IDELED) This 2-pin connector connects to the chassis hard disk activity LED.

Reset Ground

AFLASH works only in DOS mode. It does not work in the DOS prompt within Windows, and does not work with certain memory drivers that may be loaded when you boot from the hard drive. It is recommended that you reboot using a floppy disk.
3. Reboot the computer from the floppy disk.
BIOS setup must specify Floppy as the first item in the boot sequence.
4. In DOS mode, type A:\AFLASH <Enter> to run AFLASH.
If the word unknown appears after Flash Memory:, the memory chip is either not programmable or is not supported by the ACPI BIOS and therefore, cannot be programmed by the Flash Memory Writer utility.
5. Select 1. Save Current BIOS to File from the Main menu and press <Enter>. The Save Current BIOS To File screen appears.
6. Type a filename and the path, for example, A:\XXX-XX.XXX, then press <Enter>.

Chapter 4: BIOS Setup

4.1.2 Updating BIOS procedures
Update the BIOS only if you have problems with the motherboard and you are sure that the new BIOS revision will solve your problems. Careless updating may result to more problems with the motherboard!
1. Download an updated ASUS BIOS file from the Internet (WWW or FTP) (see ASUS CONTACT INFORMATION on page x for details) and save to the boot floppy disk you created earlier. 2. Boot from the floppy disk. 3. At the A:\ prompt, type AFLASH and then press <Enter>. 4. At the Main Menu, type 2 then press <Enter>. The Update BIOS Including Boot Block and ESCD screen appears. 5. Type the filename of your new BIOS and the path, for example, A:\XXX-XX.XXX, then press <Enter>. To cancel this operation, press <Enter>.
6. When prompted to confirm the BIOS update, press Y to start the update.
7. The utility starts to program the new BIOS information into the Flash ROM. The boot block is updated automatically only when necessary. This minimizes the possibility of boot problems in case of update failures. When the programming is done, the message Flashed Successfully appears.

8. Follow the onscreen instructions to continue.
If you encounter problems while updating the new BIOS, DO NOT turn off the system because this may cause boot problems. Just repeat the process, and if the problem persists, load the original BIOS file you saved to the boot disk. If the Flash Memory Writer utility is not able to successfully update a complete BIOS file, the system may not boot. If this happens, call the ASUS service center for support.

BIOS Setup program

This motherboard supports a programmable EEPROM that you can update using the provided utility described in section 4.1 Managing and updating your BIOS. Use the BIOS Setup program when you are installing a motherboard, reconfiguring your system, or prompted to Run Setup. This section explains how to configure your system using this utility. Even if you are not prompted to use the Setup program, you may want to change the configuration of your computer in the future. For example, you may want to enable the security password feature or make changes to the power management settings. This requires you to reconfigure your system using the BIOS Setup program so that the computer can recognize these changes and record them in the CMOS RAM of the EEPROM. The EEPROM on the motherboard stores the Setup utility. When you start up the computer, the system provides you with the opportunity to run this program. Press <Delete> during the Power-On Self Test (POST) to enter the Setup utility, otherwise, POST continues with its test routines. If you wish to enter Setup after POST, restart the system by pressing <Ctrl> + <Alt> + <Delete>, or by pressing the reset button on the system chassis. You can also restart by turning the system off and then back on. Do this last option only if the first two failed. The Setup program is designed to make it as easy to use as possible. It is a menu-driven program, which means you can scroll through the various sub-menus and make your selections among the predetermined choices.
Because the BIOS software is constantly being updated, the following BIOS setup screens and descriptions are for reference purposes only, and may not exactly match what you see on your screen.

4.2.1 BIOS menu bar

The top of the screen has a menu bar with the following selections: MAIN Use this menu to make changes to the basic system configuration.
ADVANCED Use this menu to enable and make changes to the advanced features. POWER BOOT EXIT Use this menu to configure and enable Power Management features. Use this menu to configure the default system device used to locate and load the Operating System. Use this menu to exit the current menu or to exit the Setup program.

OS/2 Onboard Memory > 64M [Disabled]
When using OS/2 operating systems with installed DRAM of greater than 64MB, you need to set this option to [Enabled]. Otherwise, leave to the default setting [Disabled]. Configuration options: [Disabled] [Enabled]

4.4.1 Chip Configuration

SDRAM Configuration [By SPD]
This parameter allows you to set the optimal timings for items 25, depending on the memory modules that you are using. The default setting is [By SPD], which configures items 25 by reading the contents in the SPD (Serial Presence Detect) device. The EEPROM on the memory module stores critical information about the module, such as memory type, size, speed, voltage interface, and module banks. Configuration options: [User Defined] [By SPD]

SDRAM CAS Latency [3T]

This item controls the latency between the SDRAM read command and the time the data actually becomes available.
The SDRAM CAS Latency parameter appears only when you set the SDRAM Configuration to [User Defined].
SDRAM RAS to CAS Delay [3T]
This item controls the latency between the SDRAM active command and the read/write command.
The SDRAM RAS to CAS Delay parameter appears only when you set the SDRAM Configuration to [User Defined].
SDRAM RAS Precharge Delay [3T]
This item controls the idle clocks after issuing a precharge command to the SDRAM.
The SDRAM RAS Precharge Delay parameter appears only when you set the SDRAM Configuration to [User Defined].
SDRAM Active Precharge Delay [6T]
This item controls the number os SDRAM clocks used for SDRAM parameters.
The SDRAM Active Precharge Delay parameter appears only when you set the SDRAM Configuration to [User Defined].
SDRAM Idle Timer [Infinite]
Configuration options: [Infinite] [0T] [8T] [16T] [64T]
Graphics Aperture Size [64MB]
This feature allows you to select the size of mapped memory for AGP graphic data. Configuration options: [4MB] [8MB] [16MB] [32MB] [64MB] [128MB] [256MB]

AGP Capability [4X Mode]

When set to [4X Mode], this item allows 1066MB/s video data transfers through the AGP 4X interface card. When set to [1X Mode], the AGP interface only provides a peak data throughput of 266MB/s even if you are using an AGP 4X card. Configuration options: [1X Mode] [4X Mode]
Video Memory Cache Mode [UC]
USWC (uncacheable, speculative write combining) is a new cache technology for the video memory of the processor. It can greatly improve the display speed by caching the display data. You must set this to UC (uncacheable) if your display card does not support this feature, otherwise the system may not boot. Configuration options: [UC] [USWC]
Memory Hole At 15M-16M [Disabled]
This field allows you to reserve an address space for ISA expansion cards. Setting the address space to a particular setting makes that memory space unavailable to other system components. Expansion cards can only access memory up to 16MB. Configuration options: [Disabled] [Enabled]

Wake/Power Up On Ext. Modem [Disabled]
This allows either settings of [Enabled] or [Disabled] for powering up the computer when the external modem receives a call while the computer is in Soft-off mode. Configuration options: [Disabled] [Enabled]
The computer cannot receive or transmit data until the computer and applications are fully running. Thus, connection cannot be made on the first try. Turning an external modem off and then back on while the computer is off causes an initialization string that turns the system power on.
Power Up On PCI Card [Disabled]
When set to [Enabled], this parameter allows you to turn on the system through a PCI modem. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]
Power Up On USB [Disabled]
When set to [Enabled], this field allows system power up through a USB device activity. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]
Power On By PS/2 Keyboard [Space Bar]
This parameter allows you to use specific keys on the keyboard to turn on the system. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Space Bar] [Ctrl-Esc] [Power Key]
Power On By PS/2 Mouse [Disabled]
When set to [Enabled], this parameter allows you to use the PS/2 mouse to turn on the system. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]
Automatic Power Up [Disabled]
This allows an unattended or automatic system power up. You may configure your system to power up at a certain time of the day by selecting [Everyday] or at a certain time and day by selecting [By Date]. Configuration options: [Disabled] [Everyday] [By Date]
The Automatic Power Up feature does not work if the system is powered down by an operating system, such Windows 98, that has Advanced Configuration and Power Interface (ACPI) support enabled. Refer to the Glossary for a description of ACPI specification.

4.5.2 Hardware Monitor

CPU Temperature [xxxC/xxxF]
The onboard hardware monitor automatically detects the MB (motherboard) and CPU temperatures.
CPU Fan Speed [xxxxRPM] System Fan Speed
The onboard hardware monitor automatically detects the CPU and chassis fan speeds in rotations per minute (RPM).
VCORE Voltage, +3.3V Voltage, +5V Voltage, +12V Voltage
The onboard hardware monitor automatically detects the voltage output through the onboard voltage regulators.
If any of the monitored items is out of range, the following error message appears: Hardware Monitor found an error. Enter Power setup menu for details. You will then be prompted to Press F1 to continue or DEL to enter SETUP.

Boot Menu

Boot Sequence
The Boot menu allows you to select among the four possible types of boot devices listed using the up and down arrow keys. By using the <+> or <Space> key, you can promote devices and by using the <-> key, you can demote devices. Promotion or demotion of devices alters the priority which the system uses to search for a boot device on system power up. Configuration fields include Removable Devices, IDE Hard Drive, ATAPI CD-ROM, and Other Boot Device.
Removable Device [Legacy Floppy]
Configuration options: [Disabled] [Legacy Floppy] [LS-120] [ZIP] [ATAPI MO]

IDE Hard Drive

This field allows you to select which IDE hard disk drive to use in the boot sequence. Pressing [Enter] will show the product IDs of all connected IDE hard disk drives.

ATAPI CD-ROM

This field allows you to select which ATAPI CD-ROM drive to use in the boot sequence. Pressing [Enter] will show the product IDs of all your connected ATAPI CD-ROM drives.
Other Boot Device Select [INT18 Device (Network)]
Configuration options: [Disabled] [SCSI Boot Device] [INT18 Device (Network)] ASUS P4B-M motherboard user guide 4-29

Plug & Play O/S [No]

This field allows you to use a Plug-and-Play (PnP) operating system to configure the PCI bus slots instead of using the BIOS. When [Yes] is selected, interrupts may be reassigned by the OS. If you installed a nonPnP OS or if you want to prevent reassigning of interrupt settings, keep the default setting [No]. Configuration options: [No] [Yes]
Reset Configuration Data [No]
The Extended System Configuration Data (ESCD) contain information about non-PnP devices. It also holds the complete record of how the system was configured the last time is was booted. Select [Yes] if you want to clear these data during the Power-On-Self-Test (POST). Configuration options: [Disabled] [Enabled]
Boot Virus Detection [Enabled]
This field allows you to set boot virus detection, ensuring a virus-free boot sector. The system halts and displays a warning message when it detects a virus. If this occurs, you can either allow the operation to continue or use a virus-free bootable floppy disk to restart and investigate your system. Configuration options: [Disabled] [Enabled]

Quick Power On Self Test [Enabled]
This field speeds up the Power-On-Self Test (POST) routine by skipping retesting a second, third, and fourth time. Configuration options: [Disabled] [Enabled]
Boot Up Floppy Seek [Enabled]
When enabled, the BIOS will seek the floppy disk drive to determine whether the drive has 40 or 80 tracks. Configuration options: [Disabled] [Enabled]
Full Screen Logo [Enabled]
This allows you to enable or disable the full screen logo display feature. Configuration options: [Disabled] [Enabled]
Make sure that the above item is set to [Enabled] if you wish to use the ASUS MyLogo feature.

Interrupt Mode [APIC]

The Advanced Programmable Interrupt Controller (APIC) setting allows you to distribute interrupt routings other than the 16 IRQs. The Programmable Interrupt Controller (PIC) setting allows you to use the 16 IRQs only. Configuration options: [PIC] [APIC] 4-30 Chapter 4: BIOS Setup

Exit Menu

When you have made all of your selections from the various menus in the Setup program, save your changes and exit Setup. Select Exit from the menu bar to display the following menu.
Pressing <Esc> does not immediately exit this menu. Select one of the options from this menu or <F10> from the legend bar to exit.

Exit Saving Changes

Once you are finished making your selections, choose this option from the Exit menu to ensure the values you selected are saved to the CMOS RAM. The CMOS RAM is sustained by an onboard backup battery and stays on even when the PC is turned off. When you select this option, a confirmation window appears. Select [Yes] to save changes and exit.
If you attempt to exit the Setup program without saving your changes, the program prompts you with a message asking if you want to save your changes before exiting. Pressing <Enter> saves the changes while exiting.

Exit Discarding Changes

Select this option only if you do not want to save the changes that you made to the Setup program. If you made changes to fields other than system date, system time, and password, the BIOS asks for a confirmation before exiting.

Load Setup Defaults

This option allows you to load the default values for each of the parameters on the Setup menus. When you select this option or if you press <F5>, a confirmation window appears. Select [Yes] to load default values. Select Exit Saving Changes or make other changes before saving the values to the non-volatile RAM.

Discard Changes

This option allows you to discard the selections you made and restore the previously saved values. After selecting this option, a confirmation appears. Select [Yes] to discard any changes and load the previously saved values.

Save Changes

This option saves your selections without exiting the Setup program. You can then return to other menus and make further changes. After you select this option, a confirmation window appears. Select [Yes] to save any changes to the non-volatile RAM.

Chapter 5

This chapter describes the contents of the support CD that comes with the motherboard package.

Software support

Install an operating system
This motherboard supports Windows 95/98/ME/NT/2000 and OS/2 operating system (OS). Always install the latest OS version and corresponding updates so you can maximize the features of your hardware.
For Windows 95, you must use OSR 2.0 or later. For Windows NT 4.0, you must use Service Pack 3.0 or later. You may use any version of Windows 98/ME/2000.
5.1.1 Windows 98 first time installation
When you start Windows for the first time after installing the motherboard, Windows 98 detects all Plug-n-Play devices devices. Follow the Add New Hardware wizard to install the necessary device drivers. When prompted to restart, select No. Refer to the following sections in this chapter to install the software and drivers contained in the support CD.
Because motherboard settings and hardware options vary, use the setup procedures presented in this chapter for general reference only. Refer to your OS documentation for more information.

Suppor t CD information

The support CD that came with the motherboard contains useful software and several utility drivers that enhance the motherboard features.
The contents of the support CD are subject to change at any time without notice. Visit the ASUS website for updates.
5.2.1 Running the support CD
To begin using the support CD, simply insert the CD into your CD-ROM drive. The CD automatically displays the welcome screen and the installation menus if Autorun is enabled in your computer.

PlusSOYOSYK7VEMProSOYOSYK7VIASOYOSYK7VLMBSOYOSYK7VTAProSOYO SYP4VAL(VersionM)SOYOSYP4VGASOYOSYTISUSupermicro370DDESupermicro 370SSA/370SSE/370SSM/370SSRSupermicroP3TSSE/P3TSSA/P3TSSRSupermicro P4SBA+/P4SBA/P4SBE/P4SBM/P4SBRSupermicroSuperServer5010E(SYS5010E0)Supermicro SuperServer5010H(SYS5010H0)SupermicroSuperServer5011E(SYS5011E0)Supermicro SuperServer5011H(SYS5011H0)SupermicroSuperServer5012B6(SYS5012B6)Supermicro SuperServer5012BE(SYS5012BE)TyanComputersTiger200T(S2505)/(S2505TDNGR)Tyan ComputersTiger230/Tiger230T(S2507D)/(S2507T)TyanComputersTrinity450 (S2507S)TyanComputersTrinityI845(S2090)TyanComputersTrinityK7(S2380)Tyan ComputersTrinityKT(S2390)TyanComputersTrinityKTA(S2390B). ProductDescription StorageCapacity UpgradeType
KingstonValueRAMmemory512MBDIMM168PINSDRAM

FormFactor

Technology MemorySpeed DataIntegrityCheck CASLatency Features

Generic SDRAM

512MB DIMM168PIN

133MHz(PC133)

NonECC CL3

Unbuffered 3.3V Gold

SupplyVoltage LeadPlating

ManufacturerWarranty

Limitedlifetimewarranty(Germany,AustriaandFrance10years)

ExtendedSpecs

General
StorageCapacity UpgradeType

512MB Generic

Memory

DRAM SDRAM DIMM168PIN

Technology ModuleHeight(inch) MemorySpeed CASLatency

1.15 133MHz(PC133) CL3

DataIntegrityCheck RAMFeatures
NonECC Unbuffered 64x64 3.3V Gold
ModuleConfiguration SupplyVoltage LeadPlating

Expansion/Connectivity

CompatibleSlots

1xmemoryDIMM168PIN

Service&ampSupport
*Techdataisnotresponsiblefortheerrorsinthedocumentationofproducts