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)

Make sure that the power supply is off before connecting or disconnecting the
power cable.
2.4.2 Chassis & CPU Fan Connectors (3-pin FAN)
Connect the fan's plug to the board taking into consideration the polarity of
the connector.
2.4.3 Infrared Connector (5-pin JIR1)
This connector supports the optional wireless transmitting and receiving
infrared module, with this module and application software such as Laplink or
Win95 Direct Cable Connection, user can transfer files to or from their
laptops, notebooks, PDA, PCs and printers. The connector supports IrDA
(115.2Kbps, 2 meters) and ASK-IR (56Kbps). Install infrared module onto
Infrared connector and configure the setting through 'UART Mode Select' in
Integrated Peripherals to select whether UART is directed for use with
COM2 or Infrared.

2.4.4 Wake-up on LAN Connector (3-pin JWOL)
The connector powers up the system when a wakeup packet or signal is
received from the network . This feature requires the Wake up on LAN
function in BIOS is set to Enabled and that your system has an ATX power
supply with at least 720mA +5V standby power.
2.4.5 Creative’s SB_LINK Sound Connector (6-pin SB_LINK)
The SB_LINK serves as a bridge between the mainboard and Creative's PCI
sound card. This connector delivers Sound Blaster 16 compatibility for real-
mode DOS games.
2.4.6 Floppy Disk Drive Connector (34-pin JFLP1)
This connector supports the provided floppy disk drive ribbon cable. Orient
the red stripe to pin 1

2.4.7 Primary/Secondary IDE Connector (Two 40-pin IDE)
These connectors support the provided IDE hard disk ribbon cable. Connect
your first IDE hard disk to master mode of the primary channel. If you have
second IDE device to install in your system, connect it as slave mode on the
same channel, and the third and fourth device can be connected on
secondary channel as master and slave mode respectively.
2.4.8 PS/2 Mouse Port (6-pin PS2 MOUSE1)
The system will direct IRQ12 to the PS/2 mouse.

2.4.9 Serial Port (Two 10-pin COM)
2.4.10 Printer Port (25-pin JPRT1)
You can enable the parallel port and choose the IRQ through the “Onboard
Parallel Port” setting in Integrated Peripherals of the COMS SETUP UTILITY.
2.4.11 USB Connectors (Two 4-pin USB)
You can attach USB devices to the USB connector.
2.4.12 Panel Connection (24-pin JFRNT1)
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
WARNING: To avoid the system from failing, turn off the power before
connecting any devices to the system.
Chapter 3. BIOS Setup
3.1 CMOS Setup Utility
To activate CMOS Setup, press <DEL> key immediately after you turn on the
system. The following message "Press DEL to enter SETUP" should appear
in the lower left hand corner of your screen.
When you enter the CMOS Setup Utility, the Main Menu will be displayed
(Figure 3-1). You can use arrow keys to select your function, press <Enter>
key to accept the selection and enter the sub-menu.
Figure 3-1. CMOS Setup Utility Main Screen
ROM PCI/ISA BIOS (XXXXXXXX)
CMOS SETUP UTILITY
AWARD SOFTWARE, INC.

3.2 Standard CMOS Setup
With the sub-menu (Figure 3-2), you can setup the; system date, system
time, hard and floppy drive type, and display adapter type. Please refer to
your equipment specification when changing the setup. Use arrow keys to
highlight items, and use <PageUp>, <PageDown>, <+>, or <-> keys to scroll
through the available options.
Figure 3-2. Standard CMOS Setup Screen
ROM PCI/ISA BIOS (XXXXXXXX)
STANDARD CMOS SETUP
AWARD SOFTWARE, INC.
3.2.1 Date
To assign the system date, the format is "mm.dd.yy". The input range for the Month is
1-12. Range for Date is 1-31. Range for Year is 1994-2079. System BIOS will
calculate the day of the week automatically.
3.2.2 Time

To assign the system time, the format is "hh:mm:ss". The setting is in military time.
When entering 2:34pm enter "14:34:00".
3.2.3 Hard Disks Setting
The BIOS supports Dual-Channel PIO and PCI Bus Master IDE ports. Each port
supports one master and one slave hard drive. You can use <PageUp> or
<PageDown> key to change hard drive type. Incorrect setting may result in boot up
error or system hang.
If your hard disk drive is not listed, you can select Type "USER" to define your own
drive manually. We recommend that you select Type "AUTO" for all drives. The BIOS
will auto-detect the hard disk drive and CD-ROM drive at the POST stage.
If your hard disk drive is a SCSI device, please select "None" for your hard drive
setting.
3.2.4 Floppy Drives A&B Setting
Select your floppy disk drive type. Options are 360KB(5.25"), 720KB(3.5"),
1.2MB(5.25"), 1.44MB(3.5"), 2.88MB(3.5").
3.2.5 Video Display Adapter Setting
Select the display adapter type for your system. Options are EGA/VGA, MONO,
CGA40 and CGA80.
3.2.6 Halt On
This function allows the system to halt when an error is detected during Power-On
Self-Test.
3.3 BIOS Features Setup
The sub-menu (Figure 3-3) includes all AWARD enhanced functions. The
correct setting can enhance boot up efficiency. You can assign system speed,
setup sequence, typematic and system password setting. You can enter
<F1> key for help on highlighted topics. If you want to restore values before
the changes you just made, press <F5> key. If you want to restore default
value, press <F6> or <F7> key.
Figure 3-3. BIOS FEATURES SETUP SCREEN
ROM PCI / ISA BIOS (XXXXXXXX)
BIOS FEATURES SETUP
AWARD SOFTWARE, INC.

3.3.1 Virus Warning
When enabled, the BIOS will monitor the boot sector and the partition table on the
hard drive for any attempt to modify. If an attempt is detected, the BIOS will halt the
system and prompt the warning message. Select "Disabled" if you are installing a
new operating system.
3.3.2 CPU Internal/External Cache
These options are to enable or disable CPU Internal (L1) Cache, or External (L2)
Cache.
3.3.3 CPU L2 Cache ECC Checking
Select "Enabled" to enable CPU L2 Cache ECC Checking.
Select "Disabled" to disable CPU L2 Cache ECC Checking.
3.3.4 Quick Power On Self Test
Select "Enabled" to speed up time required to complete Power-On Self-Test.
3.3.5 Boot Sequence
This option allows user to assign boot sequence of the system. Available options are
A, C, D, E, F, CD-ROM, SCSI and LS120/ZIP.
3.3.6 Swap Floppy Drive
When enabled, physical drive A will be assigned to logical drive B, and physical drive
B will be assigned to logical drive A.
3.3.7 Boot Up Floppy Seek
The system will detect and verify operation of the floppy drive type .
3.3.8 Boot Up Numlock Status
The option allows the <NumLock> key to be activated after system boot up.

3.3.9 Boot Up System Speed
This option selects system boot up speed.
3.3.10 Typematic Rate Setting
Select "Enabled" to configure "Typematic Rate" and "Typematic Delay" functions.
3.3.11 Typematic Rate
Use this option to set the rate at which a character keeps repeating while you hold
down a key.
3.3.12 Typematic Delay
Select "Enabled" to set the length of delay before key strokes to repeat. Available
options are "250", "500", "750", and "1000".
3.3.13 Security Option
You can select whether the password is required every time the system boots or only
when you enter the Setup. You can assign "Supervisor Password" and "User
Password" in the main CMOS Setup Utility Screen.
3.3.14 PCI/VGA Palette Snoop
Enable this option to correct screen color shifts, when there is a combination of VGA
cards, accelerator cards, or MPEG cards present.
3.3.15 OS Select for DRAM > 64MB
If you are using OS/2 operating system and installed memory is larger than 64MB.
You need to have the setting in the enable mode.
3.3.16 Video BIOS Shadow
Video shadow copies BIOS code from slower ROM to faster RAM. BIOS can then
execute from RAM.
3.3.17 C8000-CBFFF /DC000-DFFFF Shadow
Optional firmware will be copied from ROM to RAM. When this option is enabled.
3.4 Chipset Features Setup
These settings are intended for the Chipset function on the motherboard.
Fine tuning these options, enhances the performance of the system.
Figure 3.4 CHIPSET FEATURES SETUP SCREEN
ROM PCI / ISA BIOS (XXXXXXXX)
CHIPSET FEATURES SETUP
AWARD SOFTWARE, INC.

3.4.1 Auto Configuration
The optimum value for the chipset and CPU will be automatically loaded when
enabled.
3.4.2 DRAM Speed Selection
This option must match the memory speed. If the installed memory is 60ns type, you
should set it to "60".
3.4.3 EDO RAS# To CAS# Delay
These are timing of EDO CAS Latency and RAS to CAS Delay, calculated by clocks.
They are important parameters affects EDO performance.
3.4.4 EDO RAS# Precharge Time
The RAS Recharge means the timing to inactive RAS and the timing for DRAM to do
Recharge before next RAS can be issued.
3.4.5 System BIOS Cacheable
Allows the system BIOS to be cached for faster system performance.
3.4.6 Video BIOS Cacheable
Allows the video BIOS to be cached for faster video performance.
3.4.7 Video RAM Cacheable
This item lets you cache Video RAM A000 and B000.
3.4.8 8 Bit I/O Recovery Time
This option specifies the length of a delay inserted between consecutive 8-bit I/O
operations.
3.4.9 16 Bit I/O Recovery Time