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.
• QuickStart and JumperFree are trademarks of ASUSTeK Computer Incorporated.
• Intel, LANDesk, and Pentium are registered trademarks of Intel Corporation.
• Celeron is a trademark 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 MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
INDEX ................................................................................................. 107
ASUS P3B-F User’s Manual5
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!Any changes or modifications to this product not expressly ap-
proved by the manufacturer could void any assurances of safety or performance
and could result in violation of Part 15 of the FCC Rules.
Reprinted from the Code of Federal Regulations #47, part 15.193, 1993. Washington DC: Office of the Federal Register , National Archives and Records Administration, U.S. Government Printing Office.
Canadian Department of Communications Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions
from digital apparatus set out in the Radio Interference Regulations of the Canadian
Department of Communications.
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
6ASUS P3B-F User’s Manual
1. INTRODUCTION
1.1How This Manual Is Organized
This manual is divided into the following sections:
1.IntroductionManual information and checklist
2.FeaturesInformation and specifications concerning this product
3.Hardware SetupInstructions on setting up the motherboard and jumpers
4.BIOS SetupInstructions on setting up the BIOS software
5.Software SetupInstructions on setting up the included support software
6.Software ReferenceReference material for the included support software
7.AppendixOptional items
1.2Item Checklist
Please check that your package is complete. If you discover damaged or missing
items, please contact your retailer.
(1) ASUS Motherboard
Manual / Checklist
1. INTRODUCTION
(1) Universal Retention Mechanism for SECC2/SECC/SEPP processors
(1) Ribbon cable for master and slave IDE drives
(1) Ribbon cable for (1) 5.25” and (2) 3.5” floppy disk 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 S370-133 CPU card (optional)
ASUS CIDB Chassis Intrusion Detection Module (optional)
ASUS PCI-L101 Wake-On-LAN 10/100 ethernet card (optional)
ASUS P3B-F User’s Manual7
2.1The ASUS P3B-F Motherboard
The ASUS P3B-F is carefully designed for the demanding PC user who wants advanced features processed by the fastest CPU.
2.1.1Specifications
•Latest Intel Processor Support:
2. FEATURES
Specifications
•Intel AGPset: Features Intel’s 440BX AGPset with I/O subsystems and front-side
•Multi-Cache: Supports processors with 512, 256, 128, or 0KB Pipelined Burst
•PC100 Memory Support: Equipped with four DIMM sockets to support Intel
bus (FSB) platform, which boosts the traditional 66MHz external bus speed to 100MHz.
Level 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.
•JumperFree™ BIOS: Allows processor settings and easy overclocking of fre-
quency and Vcore voltages all through BIOS setup when JumperFree™ mode is
enabled. Easy-to-use DIP switches intsead of jumpers are provided to manually
setup the processor.
•Smart BIOS: 2Mb firmware provides Vcore and CPU/SDRAM frequency ad-
justments, boot block write protection, and HD/SCSI/MO/ZIP/CD/Floppy boot
selection. Power supply is autodetected to enable/disable suspend-to-RAM and
KB/PS/2 mouse power up, eliminating the need to make jumper adjustments.
•Multi-device W ake Up: Supports modem wake up, keyboard/PS/2 mouse wake
up, and LAN card wake up functions from sleep or soft-off mode.
•PC Health Monitoring: Provides an easier way to examine and manage system
status information, such as CPU and system voltages, temperatures, and fan
status through the onboard hardware ASIC and the bundled LDCM from Intel or
PC Probe from ASUS.
EEPROM), offering enhanced ACPI for W indows 98 compatibility , built-in firmware-based virus protection, and autodetection of most devices for virtually automatic setup.
8ASUS P3B-F User’s Manual
2. FEATURES
•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.
•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 options of five 32-bit PCI (rev 2.2) with
two 16-bit ISA expansion slots, six PCI with one ISA, and six PCI with no ISA.
All PCI slots can support Bus Master PCI cards, such as SCSI or LAN cards.
(PCI supports up to 133MB/s maximum throughput.)
•Multi-I/O: Provides two high-speed UAR T compatible serial ports and one paral-
lel port with EPP and ECP capabilities. UAR T2 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, as well as
Enhanced IDE devices, such as T ape Backup, CD-ROM, CD-R/W , and LS-120 drives.
®
•Universal Retention Mechanism: Supports a Pentium
aged in a Single Edge Contact Cartridge (SECC2/SECC) or a Celeron
sor packaged in a Single Edge Processor Package (SEPP).
III / II processor pack-
TM
proces-
Specifications
2. FEATURES
•Wake-On-LAN Connector: Supports Wake-On-LAN activity through an op-
tional ASUS PCI-L101 10/100 Fast Ethernet PCI card (see 7.1 PCI-L101 FastEthernet Card) or a similar ethernet card.
•Wake-On-Ring Connector: Supports Wake-On-Ring activity through a PCI
modem card which supports a WOR connector.
•IrDA: Supports an optional infrared port module for a wireless interface.
•Onboard LED: The onboard LED will light up when there is standby power to
the PCI bus. This acts as a reminder to the user to turn OFF the power before
plugging and unplugging devices so as not to damage the motherboard, peripherals, and/or components.
ASUS P3B-F User’s Manual9
2. FEATURES
2.1.2Special Features
•ACPI Ready:Advanced Configuration Power Interface (ACPI) provides more
Energy Saving Features for operating systems that support OS Direct Power
Management (OSPM) functionality . W ith these features implemented in the OS,
PCs can be ready around the clock, yet satisfy all the energy saving standards.
To fully utilize the benefits of ACPI, an ACPI-supported OS such as Windows
98 must be used.
2. FEATURES
Specifications
•Suspend and Go: Suspend-to-RAM (STR) provides maximum power savings
•Easy Installation: Incorporates BIOS that supports autodetection of hard disk
•New Compliancy: Both the BIOS and hardware levels of this motherboard meet
•Symbios SCSI BIOS: Supports optional ASUS SCSI controller cards through
(average of 5 watts) as an alternative to leaving the computer ON and QuickStart
so that you do not fall asleep waiting for system bootup (Suspend-to-RAM requires OS support and does not support ISA cards; ISA cards may fail to work
coming out of STR mode).
drives, PS/2 mouse, and Plug and Play devices to make the setup of hard disk
drives, expansion cards, and other devices virtually automatic.
the stringent requirements for PC’99 certification. The new PC’99 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 W indows95/98/NT. Color-coded connectors and descriptive icons
make identification easy as required by PC’99.
•Double the IDE Transfer Speed: ASUS smart series motherboards with Intel
chipsets improve IDE transfer rate using Bus Master UltraDMA/33 IDE which
can handle data transfers up to 33MB/s.
•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.
10ASUS P3B-F User’s Manual
2. FEATURES
2.1.4Intelligence
•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 or OS setting (see
PWR Button < 4 Secs in 4.5 Power Menu). When the power button is pressed
for more than 4 seconds, the system enters the soft-off mode regardless of the
BIOS setting.
•Fan Status Monitoring and Alarm: To prevent system overheat and system
damage, the CPU, power supply, and system fans can be monitored for RPM
and failure. All fans are set for its normal RPM range and alarm thresholds.
•PS/2 Keyboard/Mouse Power Up: Keyboard/Mouse Power Up can be enabled
or disabled to allow the computer to be powered on by pressing the space bar on
the keyboard or moving the mouse.
Specifications
2. FEATURES
•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 if there are messages waiting in the mailbox. A simple glimpse provides
useful information to the user.
•Remote Ring On (requires modem): This allows a computer to be turned on
remotely through an internal or external modem. With this benefit on-hand, users
can access vital information from their computers 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 enormous 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: CPU temperature is monitored by the
ASUS ASIC through the CPU’s internal thermal diode (on Pentium III, Pentium
II (Deschutes), and a Socket 370 CPU in conjunction with the ASUS S370-133
CPU card see 7.2 ASUS S370-133 CPU Card) to prevent system overheat and
system damage.
•Voltage Monitoring and Alert: System voltage levels are monitored to ensure
stable voltage to critical motherboard components. Voltage specifications are
more critical for future processors, so monitoring is necessary to ensure proper
system configuration and management.
•Chassis Intrusion Detection: Supports chassis-intrusion monitoring through
the ASUS ASIC. A chassis intrusion event is kept in memory on battery power
for more protection.
ASUS P3B-F User’s Manual11
2.2P3B-F Motherboard Components
See opposite page for locations.
Processor SupportSEC CPU Slot for SECC2/SECC/SEPP Processors ................ 2
22) ATXPWRp. 38 ATX Power Supply Connector (20 pins)
23) JTPWRp. 38 Thermal Sensor Connector
ASUS P3B-F User’s Manual15
3.3Hardware Setup Procedure
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
WARNING! Make sure that you unplug your power supply when adding or
removing system components. Failure to do so may cause severe damage to
your motherboard, peripherals, and/or components. The onboard LED (see 3.1Motherboard Layout for location) when lit acts as a reminder that the system is
Motherboard Settings
3. H/W SETUP
in suspend or soft-off mode and not powered OFF.
3. HARDWARE SETUP
3.4Motherboard Settings
This section explains in detail how to change your motherboard’s function settings
through the use of switches and/or jumpers.
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.
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.
16ASUS P3B-F User’s Manual
3. HARDWARE SETUP
Motherboard Feature Settings (DIP Switches–DSW)
The motherboard’s onboard functions are adjusted through the DIP switches. The
white block represents the switch’s position. The example below shows all the
switches in the OFF position.
R
P3B-F
P3B-F DIP Switches
DSW
ON
OFF
1. Frequency Multiple
2. Frequency Multiple
3. Frequency Multiple
4. Frequency Multiple
5. (Reserved)
6. AGP Frequency Selection
7. Frequency Selection
8. Frequency Selection
9. Frequency Selection
10. Frequency Selection
ON
12345678910
1)AGP Bus Frequency Setting (DSW-Switch 6)
This option sets the frequency ratio between the AGP bus frequency and the
DRAM (CPU bus) frequency . The default sets the AGP bus frequency to be 2/3
of the DRAM frequency . When the CPU/DRAM frequency is set to 66MHz, set
this switch to [ON]. See the processor table on the next page.
SettingDSW-Switch 6
DRAM Freq. x 2/3[OFF] (default)
DRAM Freq. x 1[ON]
3. H/W SETUP
Motherboard Settings
R
P3B-F
ON
123456 78910
ON
123456 78910
DRAM Freq. x2/3DRAM Freq. x1
P3B-F AGP Bus Frequency Setting
WARNING! AGP bus frequencies above 66MHz exceed the specifications for
the AGP interface and are not guaranteed to be stable.
ASUS P3B-F User’s Manual17
3. HARDWARE SETUP
2)CPU External Frequency Selection (DSW-Switches 7-10)
This option tells the clock generator what frequency to send to the CPU, DRAM, and
the PCI bus. This allows the selection of the CPU’s External frequency (or BUS Clock).
The BUS Clock multiplied by the Frequency Multiple equals the CPU’s Internal fre-
quency (the advertised CPU speed).
NOTE: In JumperFree mode, all dip switches (DSW) must be set to OFF.
Motherboard Settings
3. H/W SETUP
P3B-F CPU External
Frequency Selection
R
P3B-F
CPU/DRAM
PCI BUS
CPU/DRAM
PCI BUS
CPU/DRAM
PCI BUS
CPU/DRAM
PCI BUS
CPU/DRAM
PCI BUS
ON
12345678910
→
66.0MHz
→
33.4MHz
ON
12345678910
→
100.0MHz
→
33.4MHz
ON
12345678910
→
110.0MHz
→
36.7MHz
ON
12345678910
→
120.0MHz
→
40.0MHz
ON
12345678910
→
133.0MHz
→
33.3MHz
ON
ON
12345678910
75.0MHz
37.5MHz
ON
12345678910
103.0MHz
34.3MHz
ON
12345678910
112.0MHz
37.3MHz
ON
12345678910
124.0MHz
31.0MHz
ON
12345678910
133.0MHz
44.3MHz
ON
12345678910
83.0MHz
41.6MHz
ON
12345678910
105.0MHz
35.0MHz
ON
12345678910
115.0MHz
38.3MHz
ON
12345678910
124.0MHz
41.3MHz
ON
12345678910
140.0MHz
35.0MHz
12345678910
CPU/DRAM
PCI BUS
→
150.0MHz
→
37.5MHz
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.
WARNING! Frequencies above 100MHz exceed the specifications for the
onboard Intel Chipset and are not guaranteed to be stable.
18ASUS P3B-F User’s Manual
3. HARDWARE SETUP
3)CPU Core:BUS Frequency Multiple (DSW-Switches 1-4)
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.
NOTE: In JumperFree™ mode, all dip switches (DSW) must be set to OFF.
ON
12345678910
2.5x(5/2)
ON
12345678910
ON
12345678910
5.5x(11/2)
ON
12345678910
7.0x(7/1)
ON
12345678910
3.0x(3/1)
ON
12345678910
4.5x(9/2)4.0x(4/1)
ON
12345678910
6.0x(6/1)
ON
12345678910
7.5x(15/2)
R
P3B-F CPU : BUS
P3B-F
ON
12345678910
2.0x(2/1)
ON
12345678910
3.5x(7/2)
ON
12345678910
5.0x(5/1)
ON
12345678910
6.5x(13/2)
ON
Frequency Multiple
12345678910
8.0x(8/1)
Manual CPU Settings
NOTE: JumperFree mode must be disabled .
Set the DIP switches by the Internal speed of your processor a s follows:
NOTE: In JumperFree mode, your system will start up at a bus speed of 66MHz
(2.0x frequency multiplier is used for processors with unlocked multiplier) and
automatically enter BIOS setup for you to select your processor internal speed
after you have changed/reinstalled the processor or after a system hangup due to
improper CPU settings (see 4.4 Advanced Menu).
5)I/O Voltage Setting (JP20)
This jumper allows you to select the voltage supplied to the DRAM, chipset,
and AGP.
SettingJP20
3.50 Volt[1-2] (default)
3.65 Volt[2-3]
R
P3B-F
123
JumperJumperFree
123
JP20
(VIO)
123
R
P3B-F
P3B-F Input/Output Voltage Setting
3.50 Volt
(default)
123
3.65 Volt
WARNING! Using a higher voltage may help when overclocking but may result
in the shortening of your computer components’ life. Leave on default setting.
20ASUS P3B-F User’s Manual
3. HARDWARE SETUP
3.5System 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 4.4.1 Chip Configuration.
Memory speed setup is recommended through SDRAM Configuration in 4.4.1
•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 (Ex-
tended Data Output) chips.
•BIOS shows SDRAM memory on bootup screen.
•Single-sided DIMMs come in 16, 32, 64,128MB; double-sided come in 32, 64,
128, 256MB.
3. H/W SETUP
System Memory
ASUS P3B-F User’s Manual21
3. HARDWARE SETUP
3.5.2Memory Installation
WARNING!Make sure that you unplug your power supply when adding or
removing memory modules or other system components. Failure to do so may
cause severe damage to both your motherboard and expansion cards (see 3.3Hardware Setup Procedure for more information).
Insert the module(s) as shown. Because the number of pins are different on either
side of the breaks, the module will only fit in the orientation shown. 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.
Lock
System Memory
3. H/W SETUP
P3B-F 168-Pin DIMM Memory Sockets
The DIMMs must be 3.3Volt unbuffered SDRAMs. To determine the DIMM type,
check the notches on the DIMMs (see figure below).
88 Pins
R
P3B-F
60 Pins
20 Pins
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.
22ASUS P3B-F User’s Manual
3. HARDWARE SETUP
3.6Central 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
®
III processor packaged in a Single Edge Contact Cartridge 2 (SECC2), a Pentium® II processor packaged in SECC, or a Celeron™ processor packaged in a Single Edge Processor Package (SEPP). An ASUS S370-133 CPU card can allow Socket 370 processors to be
used on any ASUS motherboard with the Slot 1 connector (See 7.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.
3.6.1Quick CPU Installation Procedure
CPU
3. H/W SETUP
1.Attach the heatsink to the processor with thermal grease and retention clip.
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 suf ficient 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.
2.Install the Universal Retention Mechanism onto the motherboard.
3.Insert the processor.
ASUS P3B-F User’s Manual23
3. HARDWARE SETUP
3.6.2Attaching 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.
1.Attach the heatsink to the processor core with a good quality thermal interface
material.
2.Mount the heatsink to the processor package.
3. H/W SETUP
CPU
Using SECC fan with Pentium
®
II
Push the two lock arms one direction to clamp the heatsink onto the processor
and the other direction to release.
Lock Arm
Using SECC2 fan with Pentium
Lock Arm
®
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.
W ARNING! Make sure the heatsink is mounted tightly against the SECC2, SECC,
or SEPP; otherwise, the CPU will overheat. You may install an auxiliary fan to
provide adequate circulation across the processor’s passive heatsink.
24ASUS P3B-F User’s Manual
3. HARDWARE SETUP
3.6.3Installing the Universal Retention Mechanism
Your motherboard comes with a set of Universal Retention Mechanism (URM),
which supports Pentium III / II and Celeron processors. There are two types of URMs:
(A) With Integrated Retainer Pins and (B) With Separate Retainer Pins.
URM (A)URM (B)
Integrated Retainer Pins
1.Place the motherboard on the anti-static foam that was shipped with the motherboard. Do not place the motherboard on a hard surface while installing the URM
as the black fastener sleeves must protrude through the bottom of the motherboard.
2.Locate the Slot 1 connector on the motherboard.
3.Position the retention mechanism on either side of the Slot 1 connector.
4.Making sure that the top retainer pins are not pushed in, press down on the
retention brackets until the black fastener sleeves fit snugly against the board.
WARNING! Installing the URM while the retainer pins are pushed in will not
only cause the URM to be installed improperly but will also damage the URM.
5.Push the four retainer pins completely down into the black fastener sleeves until
the head of each pin is securely seated.
Separate Retainer Pins
CPU
3. H/W SETUP
ASUS P3B-F User’s Manual25
3. HARDWARE SETUP
3.6.4Installing the Processor
NOTE: The following steps assume that you have already attached the heatsink and
installed the URM into your motherboard.
1.Make sure that the processor substrate key is aligned with the Slot 1 connector key.
Connector Key
Substrate Key
3. H/W SETUP
CPU
2.Push down firmly but gently the SECC2/SECC/SEPP into the URM until it
snaps into place.
NOTE: The processor edge fingers must be kept parallel to the connector or else
misalignment will occur.
SECC for Pentium II only: Secure the SECC in place by pushing the two SECC
locks outward so that the locks show through the retention mechanism’s lock holes.
SECC2/SEPP: When engaged, the T-bars lock into the slots at the two ends of
the SECC2/SEPP heatsink.
SECCSECC2/SEPP
Lock hole
Lock hole
CPU fan cable to
fan connector
CPU fan
cable to fan
connector
3.If your URM is of type A, make sure the locks are in the locked position as shown.
Locked Position
(push upward)
26ASUS P3B-F User’s Manual
3. HARDWARE SETUP
3.6.5Removing the Processor
SECC: Push the SECC’s two locks inward to disengage the latch feature and firmly
lift the SECC assembly out of the URM.
SECC2/SEPP
Push lock inward
CPU fan cable to
fan connector
CPU fan cable to
fan connector
SECC2/SEPP:
URM (A): Unlock the URM by pushing the two locks down and then pull the
SECC2/SEPP assembly out.
URM (B): Place one hand on the heatsink and your other thumb on the top of one
of the URMs. Push the URM away from the assembly with your thumb while you
rotate the processor out of the slot 1 connector with the other.
CAUTION! You may wear gloves to protect your hands from the sharp edges
when removing SECC2/SEPP processors.
3.6.6Recommended Heatsinks for Slot 1 Processors
The recommended heatsinks for the Slot 1 processors are those with three-pin fans
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
3. H/W SETUP
SECC Heatsink & FanSECC2 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 P3B-F User’s Manual27
3.6.7Precautions
Operating a processor at temperatures above its maximum specified operating temperature will shorten the processor lifetime and may cause unreliable operation. To
prevent system overheat and/or damage, it is important to have accurate temperature readings of the processor core (the main source of power dissipation) for system thermal management. Included inside Pentium III, Pentium II (Deschutes), FCPGA370 Celeron, and PPGA370 Celeron processors is a thermal sensor that is connected to the internal thermal diode.
Unlike other motherboards, this motherboard was designed to acquire thermal data
directly from the processor thermal diode. Therefore, the CPU temperature reported
may be higher than those from motherboards that take readings from thermal sensors external to the processor. This is not a cause for alarm. If, however, the BIOS
and/or your hardware monitoring program is reporting a CPU temperature above
the threshold, check the following:
3. H/W SETUP
3. HARDWARE SETUP
CPU
1.An Intel recommended fan heatsink is used.
2.Good quality thermal interface material is used.
3.The heatsink is correctly installed onto the processor with a strong retention clip.
4.There is no visible gap between the processor die and heatsink.
The thermal interface material
should be continuous with no
through-holes or debris.
Example of a correctly installed retention clip
Example of an incorrectly installed retention clip
28ASUS P3B-F User’s Manual
3. HARDWARE SETUP
3.7Expansion 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.
3.7.1Expansion Card Installation Procedure
1.Read the documentation for your expansion card and make any necessary hardware or software settings for your expansion card, such as jumpers.
2.Remove your computer system’s cover and the bracket plate on the slot you
intend to use. Keep the bracket for possible future use.
3.Carefully align the card’s connectors and press firmly.
4.Secure the card on the slot with the screw you removed above.
5.Replace the computer system’s cover.
6.Set up the BIOS if necessary
(such as IRQ xx Used By ISA: Yes in 4.4.3 PCI Configuration)
7.Install the necessary software drivers for your expansion card.
3.7.2Assigning IRQs for Expansion Cards
Some expansion cards need an IRQ to operate. Generally, an IRQ must be exclusively assigned to one use. In a standard design, there are 16 IRQs available but
most of them are already in use, leaving 6 IRQs free for expansion cards. If your
motherboard has PCI audio onboard, an additional IRQ will be used. If your motherboard also has MIDI enabled, another IRQ will be used, leaving 4 IRQs free.
IMPORTANT: If using PCI cards on shared slots, make sure that the drivers support
“Share IRQ” or that the cards do not need IRQ assignments. Conflicts will arise
between the two PCI groups that will make the system unstable or cards inoperable.
The following table lists the default IRQ assignments for standard PC devices. Use
this table when configuring your system and for resolving IRQ conflicts.
Standard Interrupt Assignments
IRQPriorityStandard Function
01System Timer
12Keyboard Controller
2N/AProgrammable Interrupt
3*11Communications Port (COM2)
4*12Communications Port (COM1)
5*13Sound Card (sometimes LPT2)
614Floppy Disk Controller
7*15Printer Port (LPT1)
83System CMOS/Real Time Clock
9*4ACPI Mode when used
10*5IRQ Holder for PCI Steering
Expansion Cards
3. H/W SETUP
11*6IRQ Holder for PCI Steering
12*7PS/2 Compatible Mouse Port
138Numeric Data Processor
14*9Primary IDE Channel
15*10Secondary IDE Channel
3. HARDWARE SETUP
*These IRQs are usually available for ISA or PCI devices.
Both ISA and PCI expansion cards may require 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. To see a map of your used and free IRQs in Windows
98, the Control Panel icon in My Computer, contains a System icon, which gives
you a Device Manager tab. Double-clicking on a specific hardware device gives
you the Resources tab which shows the Interrupt number and address. Double-click
Computer to see all the interrupts and addresses for your system. Make sure that no
two devices use the same IRQ or your computer will experience problems when
those two devices are in use at the same time.
30ASUS P3B-F User’s Manual
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