Commell P2LXB User manual

Quick Installation Chart
For your convenience, this chart lists all the CPUs supported by P2LXB and
their corresponding jumper setting.
CPU Model Ratio JF0 JF1 JF2
233/66 3.5x 1-22-32-3
266/66 4.0x 2-31-21-2
300/66 4.5x 2-31-22-3
333/66 5.0x 2-32-31-2
***We support the over specification operation, please see session 3.4.16 for
more information.
***The Ratio of some latest CPUs are fixed by Intel, such as Celeron
366,400...etc. You can ignore the three jumpers if you have this CPU on
board and it will be atuo detected by motherboard. Please check with the
CPU manufacturer or vendor for the CPU Ratio information.
Panel Connectors
JFRNT1 Connector Function
GREEN LED Suspend Mode LED
PWR LED Power LED
KEYLOCK Keylock Switch
SPKR Speaker
RESET Reset Switch
IDE LED HDD LED
PWR BTN ATX Power Button Connector
SMI S/W Sleep Switch
P2LXB
Motherboard User's Manual
Product Name: P2LXB
Manual Revision: English, 1.1

Trademarks
Intel and Pentium II are trademarks of Intel Corporation
Award is a trademark of Award Software International Inc.
MS-DOS, Windows 95, Windows 98 and Windows NT are registered trademarks of Microsoft
Corporation
Novell is a trademark of Novell Corporation
All other brand and product names are trademarks or registered trademarks of their
respective companies.
Table of Contents
Chapter 1. Introduction
1.1 Product Overview
1.2 Specifications
1.3 Content
1.4 System Board Layout
Chapter 2. Hardware Setup
2.1 Installation Procedure
2.1.1 Jumper Settings
2.1.2 Clearing the CMOS
2.1.3 CPU Voltage Setting
2.1.4 CPU Frequency Selection
2.2 Installation of CPU
2.3 Installation of Memory
2.3.1 Installation of 168-pin DIMM
2.3.2 Removal of 168-pin DIMM
2.3.3 Memory Configuration
2.4 I/O Connections/Panel Connections
2.4.1 ATX Power Connector,AT Power Connector
2.4.2 Chassis & CPU Fan Connectors

2.4.3 Infrared Connector
2.4.4 Wake-up on LAN Connector
2.4.5 Creative's SB_LINK Sound Connector
2.4.6 Floppy Disk Drive Connector
2.4.7 Primary/Secondary IDE Connector
2.4.8 PS/2 Mouse Port
2.4.9 Serial Port
2.4.10 Printer Port
2.4.11 USB Connectors
2.4.12 Panel Connection
Chapter 3. BIOS Setup
3.1 CMOS Setup Utility
3.2 Standard CMOS Setup..
3.3 BIOS Features Setup
3.4 Chipset Features Setup
3.5 Power Management Setup
3.6 PNP/PCI Configuration Setup
3.7 Integrated Peripherals
3.8 Load BIOS Defaults
3.9 Load Setup Defaults
3.10 Supervisor/User Password
3.11 IDE HDD Auto Detection
3.12 Exit CMOS Setup Utility
Chapter 1. Introduction
1.1 Product Overview
Thank you for purchasing the P2LXB motherboard. This motherboard utilizes
Intel's latest technology, namely 440LX AGPset chipset. We have conducted
a motherboard compatibility test with a variety of hardware and software,

such as CPUs, memory, display cards, CD ROMs, Novell, MS Office....etc
and compliance with Year 2000.
We have set high standards on our quality control, with absolute confidence,
we believe this product is the wisest choice.
This manual is composed of three sections. The first section is the
introduction of this motherboard, and the second section explains the proper
procedure to setup the motherboard, the third section provides information on
how to setup the CMOS.
Features:
-Support Desktop Management Interface (DMI) through
BIOS.
-Support Accelerated Graphics Port (AGP) cards for high
performance.
-Modem Remote Ring On.
-Wake up on LAN.
-RTC Wake Up Alarm: Program the date/time to wake up
your system.
-CPU Thermal Protection: Warning when the CPU
temperature is too high (optional).
-CPU & System Voltage Monitoring (optional).
-CPU & Chassis fan speed monitoring (optional).
-Support Advanced Configuration Power Interface (ACPI).
-BIOS Green feature function, and Plug & Play Flash ROM.
1.2 Specifications
CPU:-
Supports Intel Celeron, Pentium II with 66 FSB
Processors.
Chipset:-
Intel 440LX AGPset chipset
DIMM:-
Supports 3.3V EDO or SDRAM in 3 168-
pin banks,each
bank consists of 1x168-pin 64-bit DIMM socket, which
can support memory sizes of 8/16/32/64/128 MB
modules.
-
Supports up to a maximum of 384 MB with SDRAM &
768 MB with EDO system memory.
IDE:-
Dual channel PIO and PCI Bus Master IDE ports
support up to 4 EIDE devices for HDD or CD-ROM
-
Supports PIO Mode 4 with data transfer rate up to 14
MB/Sec
-
Supports Ultra DMA 33 (UDMA) with data transfer rate
up to 33 MB/Sec

BIOS:-
Award BIOS V4.51 with built-in Anti-
Virus, DMI support,
and green function (Plug-and-Play BIOS)
-
Supports CD-ROM, SCSI, and LS120/ZIP boot up
I/O Devices:-
One FDD control port supports two of the 5.25" or 3.5"
floppy drives up to 2.88 MB.
-
Two high-speed 16550 UART compatible serial ports
-
One parallel ports with ECP/ EPP compatibility.
-
One PS/2 mouse port
IR Port:-
One IrDA/ASKIR compatible Infrared interface port.
(Cable optional)
USB Ports:-
Two Universal Serial Bus (USB) ports support up to 127
peripheral devices.
Power Connector:-
Supports AT & ATX Power supply.
-
Supports Modem remote Ring-On function when using
ATX power supply.
-
Supports software power off function
-
Supports RTC Wake-Up.
-
Supports Wake up on LAN.
Others:-
Supports System Monitor function (optional)
-
Supports Creative’s Sound Blaster 16 compatibility for
real-mode DOS games.
Expansion Slots:-
Four 32-bit PCI expansion slots
-
Two 16-bit ISA expansion slots
-
One 32-bit AGP expansion slot
Operating System:-
Supports Windows 95/98, Windows NT, MS-DOS V.
6.22, OS/2, Novell, Unix, SCO UNIX.....
Dimension:-
220 mm x 250 mm Baby AT Form factor
1.3 Content
The P2LXB motherboard box contains the following items:
-One P2LXB Motherboard
-One IDE Ribbon Cable
-One Floppy Ribbon Cable
-A Set of Serial Ribbon Cable
-A Parallel Port and A PS/2 Mouse Port
-One Retention mechanism
-One Driver CD

-User's Manual & Quick Installation Chart
1.4 MotherBoard Layout
Chapter 2. Hardware Setup
2.1 Installation Procedure
1. Jumper settings (BIOS and CPU)
2. Installation of CPU
3. Installation of Memory
4. I/O Connections & Panel Connections
2.1.1 Jumper Settings
In this manual , (1-2) represents the first and second pins of the jumper.
(2-3) represents the second and third pins of the jumper. On the
motherboard, you will see two sets of jumpers with different color jumper
caps:
Yellow Jumper Caps: Sets the Function of Flash CMOS

JRTC1
Green Jumper Caps: Sets the type and speed of CPU
JF0, JF1, JF2
WARNING: Electronic parts are Static sensitive. To prevent damage to the
computer and its parts please take the following measures.
-Work on a surface such as concrete, linoleum or hard wood floor.
-Ground your self with either a properly installed grounding strap or by
touching a major electrical appliance long enough to discharge the static.
2.1.2 Clearing the CMOS（Yellow Jumper Caps）
JRTC1: CMOS Function Selection
1-2:Clear data
2-3:Normal Operation(Default Setting)
How to Clear the CMOS Setting
1. Turn off the power.
2. Remove power cable from power connector .
3. Remove Yellow Jumper Cap from JRTC1(2-3)and put on
JRTC1(1-2)to remove the CMOS setting.
4. Remove Yellow Jumper Cap from JRTC1(1-2)and put on
JRTC1(2-3).
5. Connect power cable back to power connector .
6. Turn on the power.

7. While the system reboots, press <DEL> key to set the
BIOS setup.
2.1.3 CPU Voltage Setting
The motherboard supports Pentium II VID function, the CPU core voltage is
automatically detected, the range is from 1.3V to 3.5V.
2.1.4 CPU Frequency Selection
CPU Model Ratio JF0 JF1 JF2
233/66 3.5x 1-22-32-3
266/66 4.0x 2-31-21-2
300/66 4.5x 2-31-22-3
333/66 5.0x 2-32-31-2
The Ratio of some latest CPUs are fixed by Intel, such as Celeron 366,400...etc. You can
ignore the three jumpers if you have this CPU on board and it will be auto detected by
motherboard. Please check with the CPU manufacturer or vendor for the CPU Ratio
information.
2.2 Installation of CPU
The motherboard provides a Single Edge Contact(SEC)slot for a Pentium II
processor packaged in an SEC cartridge. Follow these steps to install
Pentium II CPU:
Mount the Universal Retention Mechanism (URM) & Insert the Pentium II
CPU: ( The illustration is just for reference )

This URM was designed to accommodate 3 types of CPU Form Factor.
( SECC, SECCII & SEPP ). For Example : Pentium II & Celeron family.
Note: Please put a soft pad under M/B before the installation of URM.
Installation for SECC CPU :
1. Leave space below each mounting hole for the fastener to
protrude through the hole.
2. Position URM on the M/B next to the slot1 connector.
3. Push down retainer pin into respective fastener to secure
URM onto the M/B.
4. Push CPU into URM to contact with slot1.
5. Make sure latching portion of CPU engaged with windows
ledge of URM.
Installation for SECC II or SEPP CPU :
1. Same as step (1) of SECC.
2. Same as step (2) of SECC.
3. Same as step (3) of SECC.
4. Same as step (4) of SECC.
5. Snap in 2 clips into side windows of URM to secure SEPP
CPU.
If there is a fan on the CPU, Please plug in the fan cable to the three pin fan
connector on the motherboard (CPUFAN).
2.3 Installation of Memory
P2LXB motherboard has 3x168-pin 64-bit Dual Inline Memory
Module(DIMM)sockets divided into 3 banks. You can install 3.3V Extended
Data Output(EDO)or Unbuffered Synchronous DRAM(SDRAM)memory. This
will increase the system reliability.
2.3.1 Installation of 168-pin DIMM (Dual Inline Memory Module)

1. Before inserting the DIMM, make sure the pin1 of the DIMM matches with
the pin1 on the DIMM socket.
2. Insert DIMM into the DIMM sockets at a 90-degree angle and press down.
2.3.2 Removal of 168-pin DIMM
1. Press the holding clips on both sides of the socket outward to release the
DIMM.
2. Gently pull the DIMM out of the socket.
2.3.3 Memory Configuration
There is no jumper setting required for the memory size or type. It is
automatically detected by the system BIOS, and the total memory size is to
add them together.
DIMM Socket DIMM Modules
DIMM1 EDO/SDRAM 8, 16, 32, 64, 128MB
DIMM2 EDO/SDRAM 8, 16, 32, 64, 128MB
DIMM3 EDO/SDRAM 8, 16, 32, 64, 128MB
2.4 I/O Connections/Panel Connections
I/O Connections
ATXPWR ATX Power Connector
ATPWR AT Power Connector
CHASSISFAN Chassis Fan Connector
CPUFAN CPU Fan Connector
JIR1 Infrared Connector (Cable optional))
JWOL Wake up on LAN connector
SB_LINK
For link with Creative's Sound7 Blaster 16
JFLP1 Floppy Disk Drive Connector
IDE1, 2 Primary/ Secondary IDE Connectors
PS2 MOUSE PS/2 Mouse Port
JKB1 AT Keyboard Connector
JCOM1, 2 Serial Ports 1 & 2
JPRT1 Printer Port
USB1, 2 USB Connector
2.4.1 ATX Power Connector (20-pin ATXPWR), AT Power Connector (12-pin ATPWR)