Asus P2B-F User Manual

R

P2B-F

Pentium® III / II / Celeron

USER’S MANUAL

TM

Motherboard

USER'S NOTICE

No part of this manual, including the products and software described in it, may be repro­duced, transmitted, transcribed, stored in a retrieval system, or translated into any language in
any form or by any means, except documentation kept by the purchaser for backup purposes,
without the express written permission of ASUSTeK COMPUTER INC. (“ASUS”).

ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED T O 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.

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

Products and corporate names appearing in this manual may or may not be registered trade­marks or copyrights of their respective companies, and are used only for identification or
explanation and to the owners’ benefit, without intent to infringe.

• Intel, LANDesk, and Pentium are registered trademarks of Intel Corporation.

• IBM and OS/2 are registered trademarks of International Business Machines.

• Symbios is a registered trademark of Symbios Logic Corporation.

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

• Adobe and Acrobat are registered trademarks of Adobe Systems Incorporated.
The product name and revision number are both printed on the product itself. Manual revi-

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

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

SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FUR­NISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT
ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COM­MITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR
ANY ERRORS OR INACCURACIES THAT MA Y APPEAR IN THIS MANUAL, INCLUD­ING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.

Copyright ©1999 ASUSTeK COMPUTER INC. All Rights Reserved.

Product Name: ASUS P2B-F
Manual Revision: 1.03 E369
Release Date: April 1999

2

ASUS P2B-F User’s Manual

ASUS CONTACT INFORMATION

ASUSTeK COMPUTER INC. (Asia-Pacific)

Marketing

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

Technical Support

Tel (English): [phone] ext. 706
Tel (Chinese): [phone] ext. 701
Fax: [phone]
Email: [e-mail]
Newsgroup: news2.asus.com.tw
WWW: www.asus.com.tw
FTP: ftp.asus.com.tw/pub/ASUS

ASUS COMPUTER INTERNATIONAL (America)

Marketing

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

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

Technical Support

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

ASUS COMPUTER GmbH (Europe)

Marketing

Address: Harkort Str. 25, 40880 Ratingen, BRD, Germany
Telephone: [phone]
Fax: [phone]
Email: [e-mail]

Technical Support

Hotline: [phone]
BBS: 49-2102-448690
Email: [e-mail]
WWW: www.asuscom.de
FTP: ftp.asuscom.de/pub/ASUSCOM

ASUS P2B-F User’s Manual 3

CONTENTS

I. INTRODUCTION............................................................................... 7

How this Manual is Organized ........................................................... 7

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

II. FEATURES ........................................................................................ 8

Features of the ASUS P2B-F Motherboard ........................................ 8

The ASUS P2B-F Motherboard .................................................. 11

III. HARDWARE SETUP.................................................................... 12

Layout of the ASUS P2B-F Motherboard......................................... 12

Hardware Setup Steps ....................................................................... 14

1. Motherboard Settings.................................................................... 14

Jumpers ....................................................................................... 15

2. System Memory (DIMM) ............................................................. 17

DIMM Memory Installation Procedures: .............................. 18

3. Central Processing Unit (CPU)..................................................... 19

Universal Retention Mechanism ........................................... 19

Heatsinks ............................................................................... 19

Installing the Processor ............................................................... 20

ASUS Smart Thermal Solutions............................................ 22

Recommended Heatsinks for Slot 1 Processors .................... 23

4. Expansion Cards ........................................................................... 24

Expansion Card Installation Procedure ................................. 24

Assigning IRQs for Expansion Cards.................................... 24

Assigning DMA Channels for ISA Cards.............................. 25

ISA Cards and Hardware Monitor ......................................... 25

Accelerated Graphics Port (AGP) ......................................... 25

5. External Connectors..................................................................... 26

Power Connection Procedures .......................................................... 33

IV. BIOS SETUP................................................................................... 34

Flash Memory Writer Utility ............................................................ 34

Main Menu .................................................................................. 34

Managing and Updating Your Motherboard’s BIOS................... 36

6. BIOS Setup .................................................................................. 37

Load Defaults ........................................................................ 38

Standard CMOS Setup ................................................................ 38

Details of Standard CMOS Setup:......................................... 38

BIOS Features Setup ................................................................... 41

Details of BIOS Features Setup............................................. 41

4

ASUS P2B-F User’s Manual

CONTENTS

Chipset Features Setup ................................................................ 44

Details of Chipset Features Setup.......................................... 44

Power Management Setup........................................................... 47

Details of Power Management Setup .................................... 47

PNP and PCI Setup ..................................................................... 50

Details of PNP and PCI Setup ............................................... 50

Load BIOS Defaults .................................................................... 52

Load Setup Defaults .................................................................... 52

Supervisor Password and User Password ................................... 53

IDE HDD Auto Detection ........................................................... 54

Save & Exit Setup ....................................................................... 55

Exit Without Saving .................................................................... 55

V. SOFTWARE SETUP ...................................................................... 56

Support CD Main Menu.............................................................. 56

Installation Submenu ............................................................. 57

DOS Utility Submenu............................................................ 57

VI. SOFTWARE REFERENCE.......................................................... 59

ASUS PC Probe ................................................................................ 59

Starting ASUS PC Probe ............................................................. 59

Using the ASUS PC Probe .......................................................... 60

Intel LANDesk Client Manager........................................................ 62

Main Client Manager Window.................................................... 62

Using the Taskbar icons .............................................................. 63

Using the Select Computer Dialog Box ...................................... 64

To select a computer.................................................................... 65

To discover new computers ......................................................... 65

To refresh PC health .................................................................... 65

To remove a computer from the list ............................................ 65

To wake up a computer ............................................................... 65

Displaying the Properties of a Client Computer ......................... 66

Understanding the Computer Status Icons .................................. 67

Desktop Management Interface (DMI)............................................. 68

VII. APPENDIX.................................................................................... 71

The ASUS CIDB Chassis Intrusion Sensor Module......................... 71

The ASUS S370 CPU Card .............................................................. 73

ASUS PCI-L101 Fast Ethernet Card ................................................ 75

Glossary ............................................................................................ 77

ASUS P2B-F User’s Manual 5

FCC & DOC COMPLIANCE

Federal Communications Commission Statement

This device complies with FCC Rules Part 15. Operation is subject to the following
two conditions:

• This device may not cause harmful interference, and

• This device must accept any interference received, including interference that
may cause undesired operation.

This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installa­tion. This equipment generates, uses and can radiate radio frequency energy and, if
not installed and used in accordance with manufacturer's instructions, may cause
harmful interference to radio communications. However , there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the inter­ference by one or more of the following measures:

• Re-orient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment to an outlet on a circuit different from that to which
the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

WARNING! The use of shielded cables for connection of the monitor to the

graphics card is required to assure compliance with FCC regulations. Changes
or modifications to this unit not expressly approved by the party responsible for
compliance could void the user's authority to operate this equipment.

Canadian Department of Communications Statement

This digital apparatus does not exceed the Class B limits for radio noise emissions
from digital apparatus set out in the Radio Interference Regulations of the Cana­dian Department of Communications.

6

ASUS P2B-F User’s Manual

I. INTRODUCTION

How this Manual is Organized

This manual is divided into the following sections:

I. Introduction Manual information and checklist
II. Features Information and specifications concerning this product
III. Hardware Setup Instructions on setting up the motherboard and jumpers
IV. BIOS Setup Instructions on setting up the BIOS software
V. Software Setup Instructions on setting up the included support software
VI. Software ReferenceReference material for the included support software
VII. Appendix Optional items and general reference

Item Checklist

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

(1) ASUS Motherboard

Manual / Checklist

I. INTRODUCTION

(1) Universal Retention Mechanism for SECC2/SECC/SEPP
(1) Ribbon cable for master and slave IDE drives
(1) Ribbon cable for (1) 5.25” and (2) 3.5” floppy drives
(1) Bag of spare jumper caps
(1) Support CD with drivers and utilities
(1) This Motherboard User’s Manual

ASUS IrDA-compliant infrared module (optional)
ASUS CIDB chassis intrusion sensor module (optional)
ASUS S370 CPU card (optional)

ASUS PCI-L101 Wake-On-LAN 10/100 Ethernet Card (optional)

ASUS P2B-F User’s Manual 7

Features of the ASUS P2B-F Motherboard

The ASUS P2B-F is carefully designed for the demanding PC user who wants ad­vanced features processed by the fastest CPU.

Specifications:

• Multi-Speed: Supports Intel Pentium

• Intel AGPset: Features Intel’s 440BX AGPset with I/O subsystems and front-side

II. FEATURES

Specifications

• Multi-Cache: Supports processors with 512, 128, or 0KB Pipelined Burst Level

• PC100 Memory Support: Equipped with four DIMM sockets to support Intel

• Peripheral Wake Up: Supports modem wake up, keyboard wake up, and LAN

II. FEATURES

®

III (450MHz and faster), Pentium® II

(233MHz to 450MHz), and Celeron

bus (FSB) platform, which boosts the traditional 66MHz external bus speed to 100MHz.

2 cache.

PC100-compliant SDRAMs (8, 16, 32, 64, 128, or 256MB) up to 1024MB. These
new SDRAMs are necessary to meet the critical enhanced 100MHz bus speed
requirement.

card wake up functions from sleep or soft-off mode.

TM

(266MHz and faster) processors.

• Thermal Sensor Connector with Optional Sensor: Accurately detects the CPU

temperature with the ASUS Smart Fan or the Intel boxed processor heatsink
with fan when connected to an ASUS P2T-Cable.

• PC Health Monitoring (optional): Provides an easier way to examine and man-

age system status information, such as CPU and system voltages, temperatures,
and fan status through the onboard hardware ASIC and the bundled LDCM by
Intel or PC Probe from ASUS.

• AGP Slot: Supports an Accelerated Graphics Port card for high performance,

component level interconnect targeted at 3D graphical display applications us­ing a 1X or 2X mode bus.

• SB-Link™: Features Creative’s SB-Link™, allowing SB16 compatibility, us-

ing Intel’s PC-PCI DMA and serialized IRQ protocols, to AWE64D or compat­ible PCI audio cards.

• SMBus: Features the System Management Bus interface, which is used to physi-

cally transport commands and information between SMBus devices.

• PCI & ISA Expansion Slots: Provides five 32-bit PCI and two 16-bit ISA slots.

One ISA slot is shared with a PCI slot.

• Multi-I/O: Provides two high-speed UAR T compatible serial ports and one paral-

lel port with EPP and ECP capabilities. UART2 can also be directed from COM2
to the Infrared Module for wireless connections.

• UltraDMA/33 Bus Master IDE: Comes with an onboard PCI Bus Master IDE con-

troller with two connectors that support four IDE devices in two channels, supports
UltraDMA/33, PIO Modes 3 and 4 and Bus Master IDE DMA Mode 2, and supports
Enhanced IDE devices, such as Tape Backup and CD-ROM, and LS-120 drives.

8 ASUS P2B-F User’s Manual

II. FEATURES

• Universal Retention Mechanism: Supports a Pentium® III / II processor pack-

aged in a Single Edge Contact Cartridge (SECC2/SECC) or a Celeron
sor packaged in a Single Edge Processor Package (SEPP).

• Wake-On-LAN Connector: Supports Wake-On-LAN activity through an op-

tional ASUS PCI-L101 10/100 Fast Ethernet PCI card (see APPENDIX) or a
similar ethernet card.

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

Special Features:

• Enhanced ACPI and Anti-Boot Virus BIOS: Features a programmable BIOS, of-

fering enhanced ACPI for Windows 98 compatibility, built-in firmware-based virus
protection through Trend ChipAway Virus codes, and autodetection of most de­vices for virtually automatic setup.

• Desktop Management Interface (DMI): Supports DMI through BIOS, which

allows hardware to communicate within a standard protocol creating a higher
level of compatibility. (Requires DMI-enabled components.)

TM

proces-

Specifications

II. FEATURES

• Easy Installation: Incorporates BIOS that supports autodetection of hard disk

drives, PS/2 mouse, and Plug and Play devices to make the setup of hard disk
drives, expansion cards, and other devices virtually automatic.

• PC’98 Compliant: Both the BIOS and hardware levels of ASUS smart series of

motherboards meet PC’98 compliancy. The new PC’98 requirements for sys­tems and components are based on the following high-level goals: Support for
Plug and Play compatibility and power management for configuring and man­aging all system components, and 32-bit device drivers and installation proce­dures for Windows 95/98/NT.

• Symbios SCSI BIOS: Supports optional ASUS SCSI controller cards through

the onboard SYMBIOS firmware.

Performance Features:

• Concurrent PCI: Concurrent PCI allows multiple PCI transfers from PCI mas-

ter busses to the memory and processor.

• Double the IDE Transfer Speed: ASUS smart series motherboards with Intel

chipsets improves IDE transfer rate using Bus Master UltraDMA/33 IDE which
can handle data transfer up to 33MB/s. The best of all is that this new technol­ogy is compatible with existing ATA-2 IDE specs so there is no need to upgrade
current hard drives or cables.

• SDRAM Optimized Performance: Supports the new generation memory - Syn-

chronous Dynamic Random Access Memory (SDRAM) which increases the data
transfer rate to 800MB/s max using PC100-compliant SDRAM.

ASUS P2B-F User’s Manual 9

Intelligent Features:

• Auto Fan Off: The system fans will power off automatically even in sleep

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

II. FEATURES

Specifications

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

• Keyboard Power Up: Keyboard Power Up can be enabled or disabled to allow

II. FEATURES

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

onds when the system is in the working state places the system into one of two
states: sleep mode or soft-off mode, depending on the BIOS setting (see Power
Management Setup under BIOS SETUP). When the power button is pressed for
more than 4 seconds, the system enters the soft-off mode regardless of the BIOS
setting.

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

the computer to be powered on by pressing the space bar on the keyboard.

• Message LED (requires ACPI OS support): Turbo LEDs now act as informa-

tion providers. Through the way a particular LED illuminates, the user can de­termine the stage the computer is in. A simple glimpse provides useful informa­tion to the user.

• Remote Ring On (requires external modem): This allows a computer to be

turned on remotely through an external modem. With this benefit on-hand, any
user can access vital information from their computer from anywhere in the world!

• System Resources Alert: Today’s operating systems such as Windows 95/98/

NT and OS/2, require much more memory and hard drive space to present enor ­mous user interfaces and run large applications. The system resource monitor
will warn the user before the system resources are used up to prevent possible
application crashes. Suggestions will give the user information on managing
their limited resources more efficiently.

• Temperature Monitoring and Alert: To prevent system overheat and system

damage, there are heat sensors to monitor the CPU (the Pentium II processor
requires a special heatsink with a thermal sensor) and system temperatures to
warn of damaging temperatures.

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

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

• Chassis Intrusion Detection: Supports chassis-intrusion monitoring through

the optional ASUS CIDB module and Intel LDCM.

10 ASUS P2B-F User’s Manual

II. FEATURES

The ASUS P2B-F Motherboard

T: PS/2 Mouse
B: PS/2 Keyboard

T:USB Conn 1
B:USB Conn 2

B:COM1

T:Parallel
B:Serial

B:COM2

ATX Power

Connector

Slot 1

Intel 440BX

AGPset

4 DIMM Slots

IDE

Connectors

II. FEATURES

Motherboard Parts

Accelerated
Graphics Port

5 PCI Slots

Multi-I/O

Wake-On-LAN
Connector

Hardware Monitor
(optional)

Programmable
2Mbit Flash EEPROM

SB-Link™
Connector

2 ISA Slots

Intel PIIX4E

PCIset

Floppy

Connector

ASUS P2B-F User’s Manual 11

III. HARDWARE SETUP

Layout of the ASUS P2B-F Motherboard

III. H/W SETUP

Board Layout

TOP:

ATXPWR

Mouse

PS/2

USB

BOTTOM:

Keyboard

TOP:

USB 1

BOTTOM:

USB 2

COM 1

Parallel Port Connector

COM 2

JTPWR

JTCPU

ATX Power Connector

PWR_FAN

Slot 1

CR2032 3V
Lithium Cell

(CMOS Power)

Accelerated Graphics Port

CPU_FAN

SMB Connector

SMB

Intel

440BX

AGPset

BUS FREQ

FS0
FS1
FS2
FS3

AGPFS

DIMM Socket 0 (64/72 bit, 168 pin module)

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)

PRIMARY IDE

SECONDARY IDE

KBWK

PCI Slot 1

Multi-I/O

WOL_CON

CHASSIS

Hardware

Monitor

Wake-On-LAN

Connector

SBLINK

PCI Slot 2

PCI Slot 3

PIIX4E

Flash EEPROM

(Programable BIOS)

PCI Slot 4

PCI Slot 5

PCIset

ISA Slot 1

R

ISA Slot 2

(The grayed item is optional at the time of purchase.)

Intel

FLOPPY

FREQ MULT

CLRTC

CHA_FAN

IDELED

IR

Infrared

Connector

BF0
BF1
BF2
BF3

ASUS

ASIC

Panel Connectors

12 ASUS P2B-F User’s Manual

III. HARDWARE SETUP

Motherboard Settings

1) KBWK p. 15 Keyboard Power Up

2) AGPFS p. 15 AGP Bus Frequency Selection

3) FS0, FS1, FS2, FS3 p. 16 CPU External Clock (BUS) Frequency Selection

4) BF0, BF1, BF2, BF3 p. 16 CPU Core:BUS Frequency Multiple

Expansion Slots/Sockets

1) System Memory p. 17 System Memory Support

2) DIMM Sockets p. 18 DIMM Memory Module Support

3) CPU Slot 1 p. 19 CPU Support

4) SLOT1, SLOT2 p. 24 16-bit ISA Bus Expansion Slots

5) PCI1,2,3,4,5 p. 24 32-bit PCI Bus Expansion Slots

6) AGP p. 25 Accelerated Graphics Port

Hardware Monitor

1) JTPWR, JTCPU p. 23 Thermal Sensor Connectors

Connectors

*

1) PS2KBMS p. 26 PS/2 Mouse Port Connector (6 pin-female)

2) PS2KBMS p. 26 PS/2 Keyboard Port Connector (6-pin female)

3) PARALLEL p. 27 Parallel (Printer) Port Connector (25-pin female)

4) COM1, COM2 p. 27 Serial Port COM1 & COM2 (two 9-pin male)

5) FLOPPY p. 27 Floppy Drive Port Connector (34 pins)

6) USB p. 28 Universal Serial BUS Port Connectors 1 & 2 (Two 4-pin female)

7) Primary/Secondary IDE p. 28 Primary/Secondary IDE Connectors (Two 40-1 pins)

8) IDELED p. 28 IDE LED Activity Light (2 pins)

9) CHA_, PWR_, CPU_FAN p. 29 Chassis, Power Supply, CPU Fan Power Lead (3 pins)

10) WOL_CON p. 29 Wake-On-LAN Connector (3 pins)

11) IR p. 30 Infrared Port Module Connector (5 pins)

12) SBLINK p. 30 SB-Link™ Connector (6-1 pins)

13) SMB p. 30 SMBus Connector (3 pins)

14) ATXPWR p. 31 ATX Motherboard Power Connector (20 pins)

15) CHASSIS p. 31 Chassis Intrusion Alarm Lead (3 pins)
PWR.LED (

16)

17)

KEYLOCK (

18) SPEAKER (PANEL) p. 32 System Warning Speaker Connector (4 pins)

19) MSG.LED (PANEL) p. 32 System Message LED (2 pins)

20) SMI (PANEL) p. 32 System Management Interrupt Lead (2 pins)

21) PWRSW (PANEL) p. 32 ATX Power & Soft-Off Switch Lead (2 pins)

22) RESET (PANEL) p. 32 Reset Switch Lead (2 pins)

PANEL

PANEL

)

p. 32 System Power LED Lead (3 pins)

)

p. 32 Keyboard Lock Switch Lead (2 pins)

III. H/W SETUP

Layout Contents

*

The onboard hardware monitor uses the address 290H-297H so legacy ISA cards must not

use this address otherwise conflicts will occur.

ASUS P2B-F User’s Manual 13

Hardware Setup Steps

Before using your computer, you must complete the following steps:

1. Check Motherboard Settings

2. Install Memory Modules

3. Install the Central Processing Unit (CPU)

4. Install Expansion Cards

5. Connect Ribbon Cables, Panel Wires, and Power Supply

6. Setup the BIOS Software

1. Motherboard Settings

This section explains in detail how to change your motherboard’s function settings
through the use of switches and/or jumpers.

Motherboard Settings

III. H/W SETUP

WARNING! Computer motherboards and expansion cards contain very delicate

Integrated Circuit (IC) chips. To protect them against damage from static electric­ity, you should follow some precautions whenever you work on your computer.

III. HARDWARE SETUP

1. Unplug your computer when working on the inside.

2. Use a grounded wrist strap before handling computer components. If you do
not have one, touch both of your hands to a safely grounded object or to a
metal object, such as the power supply case.

3. Hold components by the edges and try not to touch the IC chips, leads or
connectors, or other components.

4. Place components on a grounded antistatic pad or on the bag that came with
the component whenever the components are separated from the system.

14 ASUS P2B-F User’s Manual

III. HARDWARE SETUP

Jumpers

1. Keyboard Power Up (KBWK)

This allows you to disable or enable the keyboard power up function. Set to
Enable if you want to use your keyboard (by pressing <Spacebar>) to power up
your computer. This feature requires an ATX power supply that can supply at
least 300mA on the +5VSB lead. The default is set to Disable because not all
computers have the appropriate A TX power supply . Y our computer will not func­tion if you set this to Enable and if you do not have the right ATX power supply.

KBWK

R

P2B-F Keyboard Power Up

1
2
3

Disable

(Default)

1
2
3

Enable

2. AGP Frequency Selection (AGPFS)

This option sets the frequency ratio between the AGP bus frequency and the
CPU bus frequency. The default sets the AGP bus frequency to be 2/3 of the
CPU bus frequency. See the processor table on the next page.

R

P2B-F AGP Settings

1
2
3

2:3

(Default)

AGPFS

1:1

1
2
3

AGP:CPU Ratio

WARNING! AGP bus frequencies above 66MHz exceed the specifications for

the AGP interface and are not guaranteed to be stable.

III. H/W SETUP

Motherboard Settings

ASUS P2B-F User’s Manual 15

III. HARDWARE SETUP

3. CPU Bus Frequency Selection (FS0, FS1, FS2, FS3)

This option tells the clock generator what frequency to send to the CPU, DRAM, and
440BX AGPset. This allows the selection of the CPU’s External frequency (or BUS
Clock). The BUS Clock multiplied by the BUS Ratio equals the CPU’s Internal fre-
quency (the advertised CPU speed).

4. CPU Core:BUS Frequency Multiple (BF0, BF1, BF2, BF3)

This option sets the frequency multiple between the Internal frequency of the
CPU and the CPU’ s External frequency . These must be set in conjunction with the

CPU Bus Frequency.

III. H/W SETUP

Jumpers

R

P2B-F CPU Settings

BF2

BF2

BF1

BF1

FS1

FS1

FS0

FS0

BF0

1
2

3

BF0

1
2

3

1
2
3

1
2
3

BF3

2.5x (5/2)

BF3

6.0x (6/1)

FS2

FS3

75.0MHz

37.5MHz

FS2

FS3

120MHz

40MHz

BF3

2.0x (2/1)

BF3

5.5x (11/2)

CPU Core:BUS Frequency Multiple

FS2

FS3

66.8MHz

33.4MHz

FS2

FS3

115MHz

38.33MHz

CPU External Clock (BUS) Frequency Selection

BF2

BF2

BF1

BF1

FS1

FS1

BF0

1
2

3

BF0

1
2

3

FS0

1
2
3

83.3MHz

41.65MHz

FS0

1
2
3

124MHz

BF3

BF2

BF1

3.0x (3/1)

BF3

BF2

BF1

6.5x (13/2)

FS2

FS1

FS3

FS2

FS1

FS3

31MHz

BF0

1
2

3

BF0

1
2

3

FS0

1
2
3

100.3MHz

33.43MHz

FS0

1
2
3

124MHz

41.33MHz

BF3

BF2

3.5x (7/2)

BF3

BF2

7.0x (7/1)

FS2

FS1

FS3

FS2

FS1

FS3

BF0

BF1

1
2

3

BF0

BF1

1
2

3

FS0

FS3

1
2
3

103MHz

34.33MHz

FS0

FS3

1
2
3

133MHz

33.3MHz

BF3

BF2

BF1

4.0x (4/1)

BF3

BF2

7.5x (15/2)

FS2

FS1

FS0

1
2
3

FS2

FS1

FS0

BF0

1
2

3

4.5x (9/2)

BF0

BF1

1
2

3

FS2

FS3

105MHz

35MHz

FS3

1
2
3

133MHz

44.33MHz

BF2

BF3

BF1

BF3

BF2

8.0x (8/1)

FS1

FS0

1
2
3

FS2

FS1

FS0

1
2
3

BF3

BF0

1
2

3

5.0x (5/1)

BF0

BF1

FS2

FS3

110MHz

36.67MHz

FS2

FS3

140MHz

35MHz

BF2

FS1

FS1

BF0

BF1

FS3

FS0

1
2
3

112MHz

37.33MHz

FS0

FS3

1
2
3

150MHz

37.5MHz

FS2

FS2

FS1

FS1

FS0

FS0

1
2
3

1
2
3

CPU
PCI

CPU
PCI

WARNING! Frequencies above 100MHz exceed the specifications for the onboard

Intel Chipset and are not guaranteed to be stable.

Set the jumpers by the Internal speed of your processor as follows:

(CPU BUS Freq.) (Freq. Multiple)

Intel CPU Model Freq. Ratio BUS F. FS3 FS2 FS1 FS0 BF3 BF2 BF1 BF0 AGP

Pentium III 550MHz 5.5x 100MHz [2-3] [1-2] [1-2] [1-2] [2-3] [1-2] [1-2] [1-2] [1-2]
Pentium III 500MHz 5.0x 100MHz [2-3] [1-2] [1-2] [1-2] [2-3] [1-2] [1-2] [2-3] [1-2]
Pentium III/II 450MHz 4.5x 100MHz [2-3] [1-2] [1-2] [1-2] [2-3] [1-2] [2-3] [1-2] [1-2]
Pentium II/Celeron 400MHz 4.0x 100MHz [2-3] [1-2] [1-2] [1-2] [2-3] [1-2] [2-3] [2-3] [1-2]
Pentium II 350MHz 3.5x 100MHz [2-3] [1-2] [1-2] [1-2] [2-3] [2-3] [1-2] [1-2] [1-2]

Celeron 466MHz 7.0x 66MHz [2-3] [2-3] [1-2] [1-2] [1-2] [2-3] [1-2] [2-3] [2-3]
Celeron 433MHz 6.5x 66MHz [2-3] [2-3] [1-2] [1-2] [1-2] [2-3] [2-3] [1-2] [2-3]
Celeron 366MHz 5.5x 66MHz [2-3] [2-3] [1-2] [1-2] [2-3] [1-2] [1-2] [1-2] [2-3]
Pentium II/Celeron 333MHz 5.0x 66MHz [2-3] [2-3] [1-2] [1-2] [2-3] [1-2] [1-2] [2-3] [2-3]
Pentium II/Celeron 300MHz 4.5x 66MHz [2-3] [2-3] [1-2] [1-2] [2-3] [1-2] [2-3] [1-2] [2-3]
Pentium II/Celeron 266MHz 4.0x 66MHz [2-3] [2-3] [1-2] [1-2] [2-3] [1-2] [2-3] [2-3] [2-3]
Pentium II 233MHz 3.5x 66MHz [2-3] [2-3] [1-2] [1-2] [2-3] [2-3] [1-2] [1-2] [2-3]

NOTE: Overclocking your processor is not recommended. It may result in a slower
speed. Voltage Regulator Output Selection (VID) is not needed for the Pentium III /
II / Celeron processor because it sends VID signals directly to the onboard power
controller.

16 ASUS P2B-F User’s Manual

III. HARDWARE SETUP

2. System Memory (DIMM)

NOTE: No hardware or BIOS setup is required after adding or removing memory.
This motherboard uses only Dual Inline Memory Modules (DIMMs). Sockets are

available for 3.3Volt (power level) unbuffered Synchronous Dynamic Random Ac-
cess Memory (SDRAM). One side (with memory chips) of the DIMM takes up one
row on the motherboard.

To utilize the chipset’s Error Checking and Correction (ECC) feature, you must use a
DIMM module with 9 chips per side (standard 8 chips/side + 1 ECC chip) and make
the proper settings through Chipset Features Setup in BIOS SETUP.

Memory speed setup is recommended through SDRAM Configuration under “Chipset
Features Setup” in BIOS SETUP.

Install memory in any combination as follows:

DIMM Location 168-pin DIMM Total Memory

Socket 1 (Rows 0&1) SDRAM 8, 16, 32, 64, 128, 256MB x1
Socket 2 (Rows 2&3) SDRAM 8, 16, 32, 64, 128, 256MB x1
Socket 3 (Rows 4&5) SDRAM 8, 16, 32, 64, 128, 256MB x1
Socket 4 (Rows 6&7) SDRAM 8, 16, 32, 64, 128, 256MB x1

Total System Memory (Max 1024MB) =

General DIMM Notes

• For the system CPU bus to operate at 100MHz, use only PC100-compliant
DIMMs. When this motherboard operates at 100MHz, most system will not

even boot if non-compliant modules are used because of the strict timing issues
involved under this speed. If your DIMMs are not PC100-compliant, set the
CPU bus frequency to 66MHz RAM to ensure system stability.

• ASUS motherboards support SPD (Serial Presence Detect) DIMMs. This is the
memory of choice for best performance vs. stability.

• Two possible memory chips are supported: SDRAM with and without ECC.

• SDRAM chips are generally thinner with higher pin density than EDO (Ex­tended Data Output) chips.

• BIOS shows SDRAM memory on bootup screen.

• 8 chips/side modules do not support ECC, only 9 chips/side modules support ECC.

• Single-sided DIMMs come in 16, 32, 64,128MB; double-sided come in 32, 64,
128, 256MB.

III. H/W SETUP

System Memory

ASUS P2B-F User’s Manual 17

DIMM Memory Installation Procedures:

Insert the module(s) as shown. Because the number of pins are different on either
side of the breaks, the module will only fit in the orientation shown. DRAM SIMM
modules have the same pin contacts on both sides. SDRAM DIMMs have different
pin contacts on each side and therefore have a higher pin density.

R

System Memory

III. H/W SETUP

P2B-F 168-Pin DIMM Memory Sockets

III. HARDWARE SETUP

20 Pins 60 Pins 88 Pins

Lock

The DIMMs must be 3.3Volt unbuffered SDRAMs. To determine the DIMM type,
check the notches on the DIMMs (see figure below).

168-Pin DIMM Notch Key Definitions (3.3V)

DRAM Key Position

RFU

Buffered

Unbuffered

Voltage Key Position

5.0V

Reserved

3.3V

The notches on the DIMM will shift between left, center, or right to identify the type
and also to prevent the wrong type from being inserted into the DIMM slot on the
motherboard. You must tell your retailer the correct DIMM type before purchasing.
This motherboard supports four clock signals per DIMM.

18 ASUS P2B-F User’s Manual

III. HARDWARE SETUP

3. Central Processing Unit (CPU)

NOTE: The following pictures are provided for reference purposes only. The ap­pearance of your retention mechanism and fan may be different from the following
examples.

Your motherboard provides a Slot 1 connector for a Pentium
aged in a Single Edge Contact Cartridge (SECC2), a Pentium

®

III processor pack-

®

II processor pack­aged in SECC/SECC2, or a Celeron™ processor packaged in a Single Edge Proces­sor Package (SEPP). An ASUS S370 CPU card can allow Socket 370 processors to
be used on any ASUS motherboard with the Slot 1 connector (See ASUS S370 CPU
Card in APPENDIX for instructions on using this card).

Pentium II processor packaged in an SECC with
heatsink and fan (top view)

Pentium III (in an SECC2) with heatsink and fan
NOTE: The SEPP fan (for Celeron processors) is
similar to SECC2 fan except that the clamping
design is different.

Universal Retention Mechanism

Your motherboard comes preinstalled
with a Universal Retention Mechanism
(URM). The URM supports Pentium III /
II and Celeron processors.

CPU

III. H/W SETUP

Universal Retention Mechanism (URM)

Heatsinks

The recommended heatsinks (see section on recommended heatsinks for Pentium
III / II processors for more information) for the boxed Pentium III / II and Celeron
processors are those with three-pin fans that can be connected to the fan connectors
on the motherboard.

WARNING! Be sure that there is sufficient air circulation across the processor’s

heatsink by regularly checking that your CPU fan is working. W ithout sufficient
circulation, the processor could overheat and damage both the processor and the
motherboard. You may install an auxiliary chassis fan, if necessary.

ASUS P2B-F User’s Manual 19

III. HARDWARE SETUP

Installing the Processor

1. Unlock the URM’s Folding Support Arms:

The folding support arms of the URM are
locked when shipped.

T o unlock the support arms, simply flip them
up to an upright position.

Locked Folding
Support Arms

III. H/W SETUP

CPU

The URM is now ready for the installation

Unlocked Folding
Support Arms

of your processor.

2. Attach the Heatsink
NOTE: If provided, you should follow the heatsink attachment instructions

that came with your heatsink or processor. The following steps are provided
only as a general guide and may not reflect those for your heatsink.

Using the SECC fan with the Pentium

®

II

Lock Arm

Lock Arm

Push the two lock arms one direction to clamp
the heatsink onto the processor and the other
direction to release.

Using the SECC2 fan with the Pentium

®

III

Insert the four heatsink’s pins through the
holes of the SECC2. Place the metal clip on
the ends of the pins and slide until it locks
into place.

Four Pins and metal clip

NOTE: The SEPP heatsink and fan (for Intel Celeron processors) is similar to
the SECC2 heatsink and fan except that the clamping design is different.

20 ASUS P2B-F User’s Manual

III. HARDWARE SETUP

WARNING! Make sure the heatsink is mounted tightly against the SECC, SECC2

or SEPP; otherwise, the CPU will overheat. You may install an auxiliary fan to
provide adequate circulation across the processor’s passive heatsink.

3. Insert the SECC/SECC2/SEPP
SECC with Pentium

®

II only: Push the SECC’s two locks inward until you hear

a click (the picture in step 2 shows the locks in the outward position and inward in
the picture below).

With the heatsink facing the motherboard’s chipset, push the SECC, SECC2, or
SEPP gently but firmly into the Slot 1 connector until it is fully inserted.

SECC

Push lock inward

CPU fan cable to
fan connector

SECC2/SEPP

CPU fan cable to
fan connector

4. Secure the SECC/SECC2/SEPP

CPU

III. H/W SETUP

Secure the SECC/SECC2/SEPP in place by pushing the SECC/SECC2/SEPP
until it is firmly seated on the Slot 1 connector.

SECC with Pentium

®

II only: The SECC locks should be outward when se-

cured so that the lock shows through the retention mechanism’s lock holes.

SECC SECC2/SEPP

Lock hole

Lock hole

CPU fan cable to
fan connector

CPU fan
cable to fan
connector

ASUS P2B-F User’s Manual 21

III. HARDWARE SETUP

ASUS Smart Thermal Solutions

ASUS provides two smart solutions to Slot 1 CPU thermal problems: the ASUS
Smart Fan or ASUS S-P2FAN and the ASUS P2T -Cable.

III. H/W SETUP

CPU

ASUS S-P2FAN

Thermal Cable
(2 black wires)

CPU Fan Cable
(3 colored wires)

The optional ASUS Smart Fan or ASUS S-P2FAN is a

®

CPU fan for a Pentium

II processor packaged in an SECC.
Unlike other CPU thermal solutions, the ASUS S-P2F AN
has an integrated thermal sensor located near the center
of the CPU heat source. The sensor is optimized by ASUS
to give the most accurate reading of the CPU tempera­ture, thus provides the best protection to your computer
system.

To Use the ASUS S-P2FAN

See 2. Attach the Heatsink on the preceding page for the relevant procedures. Note
that the S-P2FAN comes with a rock arm design for easy FAN/CPU installation.

ASUS P2T-Cable

The optional ASUS P2T-Cable can be

®

used for a Pentium
aged in an SECC2/SECC or a Celeron™

III/II processor pack-

Sensor

processor packaged in an SEPP.
NOTE: The ASUS P2T -Cable can only

Sensor Connector Plug

be used in a Slot 1 motherboard with a
2-pin thermal sensor connector.

To Use the ASUS P2T-Cable

NOTE: The following procedures assume that you have properly attached a
heatsink onto an SECC/SECC2/SEPP.

1. Simply peel off the tab from the sensor and then stick the sensor near the middle

edge of the Intel boxed processor heatsink with fan (middle) or to either the
upper or lower edge of the Celeron™ heatsink (right), as indicated.

Tab

Sensor

← OR STICK ABOUT HERE

22 ASUS P2B-F User’s Manual

III. HARDWARE SETUP

WARNING! Do not insert the sensor between the processor and heatsink, other-

wise, it will cause damage to the P2T-Cable.

IMPORTANT! ASUS guarantees accurate readings only for the ASUS Smart
Fan and the Intel boxed processor heatsink with fan because both have similar
heat distribution and heatsink material.

2. Connect the P2T-Cable to the CPU thermal sensor connector (JTCPU).

JTPWR

R

P2B-F Thermal Sensor Connectors

Power Supply Thermal Sensor Connector

JTCPU

CPU Thermal Sensor Connector

NOTE: If you have a power supply with thermal monitoring, connect its ther­mal sensor cable to JTPWR.

Recommended Heatsinks for Slot 1 Processors

The recommended heatsinks for the Slot 1 processors are those with three-pin fans,
such as the ASUS Smart Fan, that can be connected to the motherboard’s CPU fan
connector . These heatsinks dissipate heat more efficiently and with an optional hard­ware monitor, they can monitor the fan’s RPM and use the alert function with the
Intel LANDesk Client Manager (LDCM) or the ASUS PC Probe software.

CPU

III. H/W SETUP

SECC Heatsink & Fan SECC2 Heatsink & Fan
NOTE: The SEPP heatsink and fan (for Intel Celeron processors) is similar to the

SECC2 heatsink and fan except that the clamping design is different.

ASUS P2B-F User’s Manual 23

4. Expansion Cards

WARNING! Unplug your power supply when adding or removing expansion

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

Expansion Card Installation Procedure

1. Read the documentation for your expansion card and make any necessary hard-

2. Remove your computer system’s cover and the bracket plate on the slot you

3. Carefully align the card’s connectors and press firmly.

4. Secure the card on the slot with the screw you removed above.

Expansion Cards

III. H/W SETUP

5. Replace the computer system’s cover.

III. HARDWARE SETUP

ware or software settings for your expansion card, such as jumpers.

intend to use. Keep the bracket for possible future use.

6. Set up the BIOS if necessary

(such as IRQ xx Used By ISA: Yes in PNP AND PCI SETUP)

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

Assigning IRQs for Expansion Cards

Some expansion cards need to use an IRQ to operate. Generally, an IRQ must be
exclusively assigned to one use. In a standard design, there are 16 IRQs available
but most of them are already in use, leaving 6 IRQs free for expansion cards. If your
motherboard has PCI audio onboard, an extra IRQ will be used, leaving 5 IRQs
free. If your motherboard has ISA audio onboard, an extra 3 IRQs will be used,
leaving 3 IRQs free.

Both ISA and PCI expansion cards may require to use IRQs. System IRQs are avail­able to cards installed in the ISA expansion bus first, then any remaining IRQs are
available to PCI cards. Currently , there are two types of ISA cards. The original ISA
expansion card design, now referred to as legacy ISA cards, requires that you con­figure the card’ s jumpers manually and then install it in any available slot on the ISA
bus. You may use the Microsoft Diagnostics (MSD.EXE) utility located in the Win­dows directory to see a map of your used and free IRQs. If you use W indows 95, the
Resources tab under Device Manager displays the resource settings being used by
a particular device (to gain access, double-click the System icon under the Control
Panel program). Ensure that no two devices share the same IRQs or your computer
will experience problems when those two devices are in use at the same time.

24 ASUS P2B-F User’s Manual