Asus P2B-VM User manual

R
P2B-VM
Pentium®II/CeleronTM Motherboard
USER’S MANUAL

2ASUS P2B-VM User’s Manual
USER'S NOTICE
Product Name: ASUS P2B-VM
Manual Revision: 1.04 E295
Release Date: November 1998
No part of this manual, including the products and software described in it, may be repro-
duced, transmitted, transcribed, stored in a retrieval system, or translated into any language in
any form or by any means, except documentation kept by the purchaser for backup purposes,
without the express written permission of ASUSTeK COMPUTER INC. (“ASUS”).
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
WARRANTIES OR CONDITIONS OF MERCHANTABILITYOR FITNESS FORAPAR-
TICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS,
EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDEN-
TAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF
PROFITS, LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSI-
NESS 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 byASUS; 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 trade-
marks 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.
• Soft Synthesizer is a trademark of the Yamaha 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, contactASUS
at http://www.asus.com.tw or through any of the means indicated on the following page.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUALARE FUR-
NISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT
ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COM-
MITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR
ANYERRORSORINACCURACIESTHATMAYAPPEARINTHIS MANUAL, INCLUD-
ING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
Copyright © 1998 ASUSTeK COMPUTER INC. All Rights Reserved.

ASUS P2B-VM User’s Manual 3
ASUS CONTACT INFORMATION
ASUSTeK COMPUTER INC.
Marketing
Address: 150 Li-Te Road, Peitou, Taipei, Taiwan 112
Telephone: [phone]
Fax: [phone]
Email: [email protected]
Technical Support
Fax: [phone]
BBS: [phone]
Email: [email protected]
WWW: www.asus.com.tw
FTP: ftp.asus.com.tw/pub/ASUS
ASUS COMPUTER INTERNATIONAL
Marketing
Address: 6737 Mowry Avenue, Mowry Business Center, Building 2
Newark, CA 94560, USA
Fax: [phone]
Email: [email protected]
Technical Support
Fax: [phone]
BBS: [phone]
Email: [email protected]
WWW: www.asus.com
FTP: ftp.asus.com.tw/pub/ASUS
ASUS COMPUTER GmbH
Marketing
Address: Harkort Str. 25, 40880 Ratingen, BRD, Germany
Telephone: [phone]
Fax: [phone]
Email: [email protected]
Technical Support
Hotline: [phone]
BBS: 49-2102-448690
Email: [email protected]
WWW: www.asuscom.de
FTP: ftp.asuscom.de/pub/ASUSCOM

4ASUS P2B-VM User’s Manual
CONTENTS
I. INTRODUCTION.............................................................................. 7
How this manual is organized............................................................. 7
Item Checklist ..................................................................................... 7
II. FEATURES ....................................................................................... 8
Features of the ASUS P2B-VM Motherboard .................................... 8
Parts of the ASUS P2B-VM Motherboard .................................. 11
III. INSTALLATION ........................................................................... 12
ASUS P2B-VM Motherboard Layout .............................................. 12
Installation Steps............................................................................... 14
1. Jumpers ......................................................................................... 14
2. System Memory (DIMM) ............................................................. 17
DIMM Memory Installation .................................................. 18
3. Central Processing Unit (CPU).................................................... 19
Universal Retention Mechanism ........................................... 19
Heatsinks ............................................................................... 19
Installing the Processor ............................................................... 20
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
5. External Connectors..................................................................... 26
Power Connection Procedures .......................................................... 35
IV. BIOS SOFTWARE ......................................................................... 36
Flash Memory Writer Utility ............................................................ 36
Main Menu .................................................................................. 36
Managing and Updating Your Motherboard’s BIOS................... 38
6. BIOS Setup .................................................................................. 39
Load Defaults ........................................................................ 40
Standard CMOS Setup ................................................................ 40
Details of Standard CMOS Setup:......................................... 40
BIOS Features Setup ................................................................... 43
Details of BIOS Features Setup............................................. 43
Chipset Features Setup ................................................................ 46
Details of Chipset Features Setup.......................................... 46
Power Management Setup........................................................... 49
Details of Power Management Setup .................................... 49

ASUS P2B-VM User’s Manual 5
CONTENTS
PNP and PCI Setup ..................................................................... 52
Details of PNP and PCI Setup ............................................... 52
Load BIOS Defaults .................................................................... 54
Load Setup Defaults .................................................................... 54
Supervisor Password and User Password ................................... 55
IDE HDD Auto Detection ........................................................... 56
Save & Exit Setup ....................................................................... 57
Exit Without Saving .................................................................... 57
V. SUPPORT CD ................................................................................. 58
ASUS Support CD Main Menu ........................................................ 58
A. Video Driver................................................................................ 61
B. Other Video Drivers .................................................................... 65
C. ATI Player ................................................................................... 77
D. Audio Driver ............................................................................... 81
E. Audio Software ........................................................................... 85
F. Software Wavetable..................................................................... 92
G. DMI Utility.................................................................................. 93

6ASUS P2B-VM User’s Manual
FCC & DOC COMPLIANCE
CanadianDepartment 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.
FederalCommunications 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 installa-
tion. 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 interfer-
ence 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!Theuseofshieldedcablesforconnectionofthemonitor tothegraphics
card is required to assure compliance with FCC regulations. Changes or modifica-
tions to this unit not expressly approved by the party responsible for compliance
could void the user’s authority to operate this equipment.

ASUS P2B-VM User’s Manual 7
I. INTRODUCTION
I. INTRODUCTION
Manual / Checklist
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. Installation: Instructions on setting up the motherboard
IV. BIOS Software: Instructions on setting up the BIOS software
V. Support CD: Information on the included support software
Item Checklist
Please check that your package is complete. If you discover damaged or missing
items, please contact your retailer.
(1) ASUS Motherboard
(1) Universal Retention Mechanism for SECC/SECC2/SEPP
(1) IDE ribbon cable for master and slave drives
(1) Floppy ribbon cable for (1) 5.25inch floppy and (2) 3.5inch floppies
(1) Bag of spare jumper caps
(1) Support CD with drivers and utilities
(1) Motherboard User’s Manual
COM2 connector with bracket (optional)
ASUS PC100 DIMM memory module (optional)
ASUS PCI-L101 Wake-On-LAN 10/100 Fast Ethernet Card (optional)
IrDA-compliant infrared module (optional)

8ASUS P2B-VM User’s Manual
II. FEATURES
Features
II. FEATURES
Features of the ASUS P2B-VM Motherboard
The ASUS P2B-VM is carefully designed for the demanding PC user who wants
advanced features processed by the fastest CPU.
Specifications:
•Multi-Speed: Supports Intel Pentium
®
II (233MHz to 450MHz) and Celeron
TM
(266MHz and faster) processors.
•Intel AGPset: Features Intel’s 440BX AGPset with I/O subsystems and front-side
bus(FSB)platform,whichbooststhetraditional66-MHzinternalbusspeedto100MHz.
•Multi-Cache:Supports processors with either 0, 128, or 512KB Pipelined Burst
Level 2 cache.
•PC100 Memory Support: Equipped with three DIMM sockets to support Intel
PC100-compliant SDRAMs (8, 16, 32, 64, 128, or 256MB) up to 768MB. These
new SDRAMs are necessary to meet the critical enhanced 100MHz bus speed
requirement.
•Peripheral Wake Up: Supports modem wake up, keyboard wake up, and LAN
card wake up functions from sleep or soft-off mode.
•AGP 3D VGA: Features optional onboard ATI 3D Rage Pro AGP 2X (8MB
SDRAM) or Rage IIC AGP (4MB SDRAM) for 3D hardware acceleration.
•AGPSlot (optional): SupportsAGPgraphics cards for high performance, com-
ponent level interconnect targeted at 3D graphical display applications. This
slot is available as an option with the Rage IIC only.
•PCI Audio (optional): Features optional ESS 32-bit PCI audio onboard.
•SB-Link™: Features Creative’s SB-Link™, allowing SB16 compatibility, us-
ing Intel’s PC-PCI DMA and serialized IRQ protocols, toAWE64D or compat-
ible PCI audio cards.
•PCI & ISA Expansion Slots: Provides three 32-bit PCI slots and one 16-bit ISA
slot. The ISA slot is shared with a PCI slot.
•Super Multi-I/O: Provides two high-speed UART compatible serial ports and
oneparallelportwith EPPandECPcapabilities. UART2canalso be directed from
COM2 to the Infrared Module for wireless connections.
•Ultra DMA/33 Bus Master IDE: Comes with an onboard PCI Bus Master IDE
controllerwithtwoconnectorsthatsupportfour IDEdevicesintwochannels,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.
•Universal Retention Mechanism: Supports a Pentium
®
II processor packaged
in a Single Edge Contact Cartridge (SECC/SECC2) or a Celeron
TM
processor
packaged in a Single Edge Processor Package (SEPP).
•Wake-On-LAN Header: Supports Wake-On-LAN activity with special net-
work cards, such as the ASUS PCI-L101 10/100 Fast Ethernet PCI card.

ASUS P2B-VM User’s Manual 9
II. FEATURES
Features
II. FEATURES
Special Features:
•EnhancedACPI: Features a programmable BIOS, offering enhancedACPI 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.)
• 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 ofASUS smart series of
motherboards meet PC’98 compliancy. The new PC’98 requirements for sys-
tems and components are based on the following high-level goals: Support for
Plug and Play compatibility and power management for configuring and man-
aging all system components, and 32-bit device drivers and installation proce-
dures for Windows 95/98/NT.
• Anti-Boot Virus BIOS & PC-cillin Bundled: Double protection for your
motherboard against boot sector viruses through boot firmware (Anti-Boot Vi-
rus BIOS) and file viruses through the bundled PC-cillin.
•Symbios SCSI BIOS: Supports optional ASUS SCSI controller cards through
onboard SYMBIOS firmware.
Performance Features:
•Concurrent PCI: Concurrent PCI allows multiple PCI transfers from PCI mas-
ter busses to the memory and to the 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 technol-
ogy is compatible with existingATA-2 IDE specs so there is no need to upgrade
current hard drives or cables.
• SDRAMOptimizedPerformance:Supports the new generation memory-Syn-
chronous Dynamic RandomAccess Memory (SDRAM) which increases the data
transfer rate from 528MB/s max using EDO memory to 800MB/s max using
SDRAM.

10 ASUS P2B-VM User’s Manual
II. FEATURES
Features
II. FEATURES
Intelligent Features:
• Auto Fan Off: The system fans will power off automatically even in sleep
mode.This function reduces both energy consumption and system noise, and is
an important feature in implementing silent PC systems.
• Dual Function Power Button: Pushing the power button for less than 4 sec-
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 SOFTWARE). When the power button is
pressed for more than 4 seconds, the system enters the soft-off mode regardless
of the BIOS setting.
• Keyboard Power Up: Keyboard Power Up can be enabled or disabled to allow
the computer to be powered on by pressing the space bar on the keyboard.
• Message LED (requiresACPI OS support):Turbo LEDs now act as informa-
tion providers. Through the way a particular LED illuminates, the user can de-
termine the stage the computer is in.Asimple glimpse provides useful informa-
tion 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
usercanaccessvitalinformationfromtheircomputerfrom 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.

ASUS P2B-VM User’s Manual 11
Parts of the ASUS P2B-VM Motherboard
II. FEATURES
II. FEATURES
Motherboard Parts
3 PCI Slots
1ISASlot
ATI 3D Rage Pro AGP2X
ATI 3D Rage IICAGP
Multi-I/O, Keyboard
Controller
T: PS/2 Mouse
B: PS/2 Keyboard
Programmable
Flash EEPROM
Intel PIIX4E
PCIset with RTC
4MB VGA Memory (Rage IIC)
8MB VGA Memory (Rage Pro)CPU Slot1
VGAConnector
Serial COM 1
(Optional)
T: Joystick/MIDI
Connector
B:Audio Ports
ESS Audio
(optional)
ASUS
ASIC
ATX Power
T: USB Conn 1
B: USB Conn 2
Serial COM 2
Header
Parallel Port
ATI Multimedia Connector
3 DIMM
Sockets
Intel 440BX
AGPset
Accelerated Graphics
Port (optional)
SB-Link
TM
Connector

12 ASUS P2B-VM User’s Manual
III. INSTALLATION
ASUS P2B-VM Motherboard Layout
Motherboard Layout
III. INSTALLATION
(Grayed items are optional at the time of purchase.)
FLOPPY
SECONDARY IDE
PRIMARY IDE
CHA_FAN
DIMM Socket 1 (64/72 bit, 168 pin module)
Accelerated Graphics Port
Intel
PIIX4E
PCIset
Intel
440BX
AGPset
ATXPWR
CPU Slot 1
Panel Connectors
USB
PS/2
TOP:
USB 1
BOTTOM:
USB 2
R
FREQ MULT
BF1
BF0
BF2
BF3
CLRTC
BUS FREQ
FS1
FS2
FS0
ISA Slot 1 (ISA1)
PCI Slot 1 (PCI1)
TOP:
Mouse
BOTTOM:
Keyboard
ASUS
ASIC
SB-LINK
DIMM Socket 2 (64/72 bit, 168 pin module)
DIMM Socket 3 (64/72 bit, 168 pin module)
PCI Slot 2 (PCI2)
PCI Slot 3 (PCI3)
CR2032 3V
Lithium Cell
(BIOSPower)
Flash EEPROM
(Programable BIOS)
CPU_FAN
PWR_FAN
PS_FAN
KB_WAK
AUDIO_EN
VGAEN
WOL_CON
FS3
CD_IN
MODEM_IN
COM2 header
2 MB
SDRAM
2 MB
SDRAM
2 MB
SDRAM 2 MB
SDRAM
IR
Multi-I/O,
Keyboard
Controller
FS4
32-bit PCI
Audio
Chipset
GAME/AUDIO
(optional)
Mic
In Line
Out
Line
In
COM1
VGA
PARALLEL PORT
01 23
VPANEL
45
INT_EN
ATI 3D Rage
Pro AGP 2X/
IIC AGP
VGA Chipset
ATI Multimedia Connector
AMC
ROW
8MB available on
Rage Pro only

ASUS P2B-VM User’s Manual 13
III. INSTALLATION
Jumpers
1) INT_EN p. 14 VGA Interrupt Setting (Enable/Disable)
2) VGAEN p. 14 VGA Setting (Enable/Disable)
3) CLRTC p. 15 Real Time Clock (RTC) RAM
4) KB_WAK p. 15 Keyboard Power (Wake) Up (Enable/Disable)
5) FS0, FS1, FS2, FS3, FS4 p. 16 CPU External Clock (BUS) Frequency Selection
6) BF0, BF1, BF2, BF3 p. 16 CPU:BUS Frequency Multiple
Expansion Slots
1) DIMM Sockets p.17 168-Pin DIMM Memory Support
2) CPU Slot1 p. 19 Pentium
®
II/Celeron
TM
CPU Support
3) PCI Slot 1,2, 3 p. 25 32-bit PCI Bus Expansion Slots
4) ISA Slot 1 p. 25 16-bit ISA Bus Expansion Slot
Connectors
1) MOUSE P. 26 PS/2 Mouse Connector (6-pin female)
2) KEYBOARD p. 26 PS/2 Keyboard Connector (6-pin female)
3) PRINTER p. 27 Parallel Port Connector (25-pin female)
4) COM1 p. 27 Serial Port COM1 Connector (9-pin male)
5) VGA p. 27 Monitor (VGA) Output Connector (15-pin female)
6) AUDIO (optional) p. 28 Audio PortConnectors (Three1/8” female) (optional)
7) GAME (optional) p. 28 Joystick/Midi Connector (15-pin female) (optional)
8) USB p. 28 Universal Serial BUS Ports 1 & 2 (Two 4-pin female)
9) PRIMARY/SECONDARYIDE p. 29 Primary/Secondary IDE Connectors (Two 40-1pins)
10) FLOPPY p. 29 Floppy Disk Drive Connector (34-1pins)
11) IR p. 30 IrDA-Compliant Infrared Module Connector (5 pins)
12) WOL_CON p. 30 Wake-On-LAN Connector (3 pins)
13) CHA_, CPU_, PWR_FAN p. 31 Chassis,CPU,PowerSupplyFanConnectors(Three3-pin)
14) ATXPWR p. 31 ATX Power Supply Connector (20 pins)
15) SB-LINK p. 32 SBLink Connector (6-1 pins)
16) CD_IN, MODEM_IN p. 32 Stereo Audio In and Modem Audio (Two 4-pin)
17) MLED (PANEL) p. 33 System Message LED (2 pins)
18) KEYLOCK ( PANEL ) p. 33 Keyboard Lock Switch Lead (2 pins)
19) SMI (PANEL) p. 33 SMI Switch Lead (2 pins)
20) SPEAKER (PANEL) p. 33 Speaker Output Connector (4 pins)
21) PWR (PANEL) p. 33 ATX Power & Soft-Off Switch Lead (2 pins)
22) IDELED (PANEL) p. 33 IDE Activity LED (2 pins)
23) PLED ( PANEL ) p. 33 System Power LED Lead (3-1 pins)
24) RESET (PANEL) p. 33 Reset Switch Lead (2 pins)
25) COM2 p. 34 Serial Port COM2 Header (10-1 pins)
26) AMC p. 34 ATI Multimedia Channel (40-3 pins)
Layout Contents
III. INSTALLATION

14 ASUS P2B-VM User’s Manual
III. INSTALLATION
Jumpers
III. INSTALLATION
Installation Steps
Before using your computer, you must complete the following steps:
1. Set Jumpers on the Motherboard
2. Install System Memory Modules
3. Install the Central Processing Unit (CPU)
4. Install Expansion Cards
5. Connect Ribbon Cables, Cabinet Wires, and Power Supply
6. Setup the BIOS Software
WARNING!Computer motherboards, baseboards and components, such asSCSI
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.
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.
1. Jumpers
1. VGAInterrupt Selection (INT_EN) and 2. VGA Setting (VGAEN)
The INT_EN jumper allows you to set the VGA interrupt method. The default
disables the chipset’s internal interrupt routing. Some TV-Tuner or MPEG cards
may require that the interrupt be assigned by the onboard chipset, in which case
enable INT_EN. The VGAEN jumper allows you to enable or disable the onboard
VGA. Disable the onboardVGAif you are using aVGAcard on the expansion slot.
P2B-VM VGA Settings
R
Enable
(Default) Disable
VGAEN
1
2
3
VGAEN
1
2
3
Disable
(Default) Enable
INT_EN
1
2
3
INT_EN
1
2
3

ASUS P2B-VM User’s Manual 15
III. INSTALLATION
3. Real Time Clock (RTC) RAM (CLRTC)
The CMOS RAM is powered by the onboard button cell battery. To clear the
RTC data: (1) Unplug your computer, (2) Short solder points, (3) Turn on your
computer, (4) Hold down <Delete> during bootup and enter BIOS setup to re-
enter user preferences.
RTC RAM CLRTC
Clear CMOS [short solder points momentarily]
P2B-VM Clear RTC RAM
CLRTC
R
4. Keyboard Power (Wake) Up (KB_WAK)
This allows you to disable or enable the keyboard power up function. Set this
jumper to Enable if you wish to use your keyboard (by pressing the spacebar) to
power up your computer. This feature requires an ATX power supply that can
supply at least 300mAmp on the +5VSB lead. The default is set to Disable
because not all computers have the appropriate ATX power supply. Your com-
puter will not power on if you set this to Enable and if you do not have the right
ATX power supply. WARNING! This jumper setting must coincide with the
BIOS setting (see “Power Up By Keyboard” in the Power Management Setup of
the BIOS SOFTWARE) or else conflicts will occur.
Setting KB WAK
Disable [1-2] (default)
Enable [2-3]
P2B-VM Keyboard Power (Wake) Up
Disable
(Default)
KB_WAK KB_WAK
Enable
1
2
3
1
2
3
R
III. INSTALLATION
Jumpers

16 ASUS P2B-VM User’s Manual
Jumpers
III. INSTALLATION
III. INSTALLATION
5. CPU Bus Frequency Selector (FS0, FS1, FS2, FS3, FS4)
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).
6. 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.
NOTES: Overclocking your processor is not recommended. It may result in a slower
speed.VoltageRegulatorOutputSelection(VID)isnotneededforthePentiumII/Celeron
processor because it sends a VID signal directly to the onboard power controller.
Set the jumpers by the Internal speed of your processor asfollows:
(CPU BUS Freq.) (Freq. Multiple)
Intel CPU Model Freq. Ratio BUS F. FS4 FS3 FS2 FS1 FS0 BF3 BF2 BF1 BF0
Pentium II 450MHz 4.5x 100MHz [1-2] [2-3] [1-2] [1-2] [1-2] [2-3] [1-2] [2-3] [1-2]
Pentium II 400MHz 4.0x 100MHz [1-2] [2-3] [1-2] [1-2] [1-2] [2-3] [1-2] [2-3] [2-3]
Pentium II 350MHz 3.5x 100MHz [1-2] [2-3] [1-2] [1-2] [1-2] [2-3] [2-3] [1-2] [1-2]
Pentium II/Celeron 333MHz 5.0x 66MHz [2-3] [2-3] [2-3] [1-2] [1-2] [2-3] [1-2] [1-2] [2-3]
Pentium II/Celeron 300MHz 4.5x 66MHz [2-3] [2-3] [2-3] [1-2] [1-2] [2-3] [1-2] [2-3] [1-2]
Pentium II/Celeron 266MHz 4.0x 66MHz [2-3] [2-3] [2-3] [1-2] [1-2] [2-3] [1-2] [2-3] [2-3]
WARNING! Frequencies above 100MHz exceed the specifications for the on-
board Intel Chipset and are not guaranteed to be stable.
P2B-VM CPU Settings
CPU Bus Frequency
75.0MHz
37.5MHz 83.0MHz 41.6MHz
66.8MHz
33.4MHz 100.3MHz 33.4MHz
FS1FS2 FS0FS3
1
2
3
FS4 FS1FS2 FS0FS3
1
2
3
FS4 FS1FS2 FS0FS3
1
2
3
FS4 FS1FS2 FS0FS3
1
2
3
FS4 FS1FS2 FS0FS3
1
2
3
FS4
103MHz
34.3MHz
110.0MHz
36.7MHz 112.0MHz 37.3MHz
105.0MHz
35.0MHz 115.0MHz 38.3MHz
FS1FS2 FS0FS3
1
2
3
FS4 FS1FS2 FS0FS3
1
2
3
FS4 FS1FS2 FS0FS3
1
2
3
FS4 FS1FS2 FS0FS3
1
2
3
FS4 FS1FS2 FS0FS3
1
2
3
FS4
120.0MHz
40.0MHz
124.0MHz
31.0MHz 133.0MHz 44.3MHz
124.0MHz
41.3MHz 133.0MHz 33.3MHz
FS1FS2 FS0FS3
1
2
3
FS4 FS1FS2 FS0FS3
1
2
3
FS4 FS1FS2 FS0FS3
1
2
3
FS4 FS1FS2 FS0FS3
1
2
3
FS4
CPU
PCI CPU
PCI CPU
PCI CPU
PCI CPU
PCI
CPU
PCI CPU
PCI CPU
PCI CPU
PCI CPU
PCI
CPU
PCI CPU
PCI CPU
PCI CPU
PCI
CPU Core:Bus Frequency Multiple
4.0x(4/1)
BF1
BF2 BF0BF3
1
2
35.0x(5/1)
BF1
BF2 BF0BF3
1
2
3
4.5x(9/2)
BF1
BF2 BF0BF3
1
2
3
2.0x(2/1)
BF1
BF2 BF0BF3
1
2
32.5x(5/2)
BF1
BF2 BF0BF3
1
2
33.0x(3/1)
BF1
BF2 BF0BF3
1
2
33.5x(7/2)
BF1
BF2 BF0BF3
1
2
3
R
WARNING! PCI frequencies above 33MHz exceed the specifications for PCI
cards and are not guaranteed to be stable.

ASUS P2B-VM User’s Manual 17
System Memory
III. INSTALLATION
2. System Memory (DIMM)
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.
Memoryspeedsetup is recommended through SDRAM Configuration under “Chipset
Features Setup” in BIOS setup.
General DIMM Notes
•For the system CPU bus to operate at 100MHz, use only PC100-compliant DIMMs
compatible with Intel’s PC100 SDRAM specifications. This motherboard operates at
100MHz, thus most systems will not even boot if non-compliant modules are used be-
cause of the strict timing issues involved under this speed. If your DIMMs are not PC100-
compliant, set the CPU bus frequency to 66MHz.
•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-sidedDIMMscomein 16, 32,64,128MB;double-sidedcomein 32, 64,128,256MB.
III. INSTALLATION
Install memory in any combination as follows:
DIMM Location 168-pin DIMM Size 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
Total System Memory (Max 768MB) =

18 ASUS P2B-VM User’s Manual
DIMM Memory Installation
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 as shown. DIMM
modules are longer and have different pin contact on each side and therefore have a
higher pin density. SIMM modules have the same pin contact on both sides.
P2B-VM 168-Pin DIMM Sockets
20 Pins 60 Pins 88 Pins
Lock
R
TheDIMMsmustbe3.3VUnbufferedfor this motherboard.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 Voltage Key Position
Unbuffered
RFU
Buffered Reserved
3.3V
5.0V
The notches on the DIMM module will shift between left, center, or right to identify
the typeand alsoto prevent the wrongtype from being inserted intothe DIMM slot on
the motherboard.You must tell your retailer the correct DIMM type before purchas-
ing. This motherboard supports four clock signals.
III. INSTALLATION
System Memory
III. INSTALLATION

ASUS P2B-VM User’s Manual 19
3. Central Processing Unit (CPU)
Your motherboard provides a Slot 1 connector for a Pentium
®
II processor packaged
in a Single Edge Contact Cartridge (SECC/SECC2) or a Celeron™ processor pack-
aged in a Single Edge Processor Package (SEPP).
III. INSTALLATION
CPU
III. INSTALLATION
Heatsinks
The recommended heatsinks (see section on recommended heatsinks for Pentium II
processors for more information) for the boxed Pentium 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. Without sufficient
circulation, the processor could overheat and damage both the processor and the
motherboard. You may install an auxiliary fan, if necessary.
Universal Retention Mechanism (URM)
Universal Retention Mechanism
Your motherboard comes preinstalled with aUniversalRetentionMechanism (URM).
The URM supports Pentium II and Celeron processors.
Pentium II processor packaged in an SECC with heatsink and
fan (top view) PentiumIIprocessor packagedinan SECC2orCeleron™ processor packagedinanSEPPwithheatsinkandfan(topview)

20 ASUS P2B-VM User’s Manual
III. INSTALLATION
CPU
III. INSTALLATION
The URM is now ready for the installation of your processor.
Installing the Processor
1. UnlocktheURM’sFoldingSupportArms:
The folding support arms of the URM are
locked when shipped.
Unlocked Folding Support
Arms
Locked Folding Support
To unlock the support arms, simply flip them up to an upright position.