Asus INTEL 850 ATX User Manual

WMT-LX  
Intel® 850 ATX Motherboard  
Manual  
SPECIFICATIONSAND INFORMATION CONTAINED IN THIS MANUALARE FURNISHED  
FOR INFORMATIONALUSE ONLY,ANDARE SUBJECTTO CHANGEATANYTIME WITH-  
OUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUSTeK  
COMPUTER INC. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY  
ERRORS OR INACCURACIES THAT MAYAPPEAR IN THIS MANUAL, INCLUDING THE  
PRODUCTS AND SOFTWARE DESCRIBED IN IT.  
Copyright © 2001 ASUSTeK COMPUTER INC. All Rights Reserved.  
Product Name:  
Release Date:  
HP WMT-LX  
2001  
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1. FEATURES  
1.2 Layout Contents  
Expansion  
1) RIMMA1/A2/B1/B2  
2) CPU  
p. 5 184-Pin System Memory Support  
p. 7 Central Processing Unit  
3) PCI1/2/3/  
4) AGPPRO  
p. 12 32-bit PCI Bus Expansion Slots  
p. 13 Accelerated Graphics Port Slot  
Connectors  
1) PS2MS  
2) PS2KB  
3) PRINTER  
4) COM1  
5) 1394_CON  
6) USB  
p.14 PS/2 Mouse Connector (Green 6-pin female)  
p.14 PS/2 Keyboard Connector (Purple 6-pin female)  
p.15 Parallel Port Connector (Burgundy 25-pin female)  
p.15 Serial Port Connectors (Turquoise 10-1 pin male)  
p.15 IEEE-1394 Controller Interface Connector (6-pin male)  
p.16 Universal Serial Bus Ports (Black two 4-pin female)  
p.16 Fast-Ethernet Port Connector (female)  
7) RJ45  
8) PRIMARY/SECONDARYIDE p.17 Primary/Secondary IDE Connectors (Two 40-1pin)  
9) FLOPPY p.18 Floppy Disk Drive Connector (34-1pin)  
10) 1394HEAD2/1394HEAD3 p.18 IEEE-1394 Headers (8-pin)  
11) CPU_FAN, PWR_FAN  
12) WOL  
13) USB2/3  
p.19 POWER, CPU Fan Connectors (3 pin)  
p.20 Wake-On-LAN Connector (3 pin)  
p.20 USB Header (10-1 pin)  
14) ATXPWR, AUXPWR,  
ATX12V  
p.21 ATX 12V Power Supply Connectors  
15) PWR (PANEL)  
16) IDELED (PANEL)  
17) PLED (PANEL)  
18) RESET (PANEL)  
19) MLED (PANEL)  
20) KEYLOCK (PANEL)  
21) SMI (PANEL)  
p.22 ATX Power / Soft-Off Switch Lead (2 pin)  
p.22 IDE Activity LED (2 pin)  
p.22 System Power LED Lead (3-1 pin)  
p.22 Reset Switch Lead (2 pin)  
p.22 System Message LED (2 pin)  
p.22 Keyboard Lock Switch Lead (2 pin)  
p.22 System Management Interrupt Switch Lead (2 pin)  
p.22 System Warning Speaker Connector (4 pin)  
p.23 Real Time Clock Jumper  
22) SPEAKER (PANEL)  
23) RTC  
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2. HARDWARE SETUP  
2.1 Getting Started  
IMPORTANT: Due to Pentium 4 CPU’s power consumption requirement, an  
ATX12V power supply is recommended for this motherboard. For typical system  
configurations, an ATX12V power supply that can supply at least 230W and at least  
8.5A on the +12V lead is required. For heavily-loaded configurations, an ATX12V  
power supply that can supply at least 300W is required.  
Before using your computer, you must complete the following steps:  
• Check Motherboard Settings  
• Install Memory Modules  
• Install the Central Processing Unit (CPU)  
• Install Expansion Cards  
• Connect Ribbon Cables, Panel Wires, and Power Supply  
WARNING! Computer motherboards and expansion cards contain very delicate  
Integrated Circuit (IC) chips. To protect them against damage from static electric-  
ity, 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 con-  
nectors, 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.  
5. Ensure that the ATX power supply is switched off before you plug in or  
remove the ATX power connector on the motherboard.  
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 when  
lit acts as a reminder that the system is in suspend or soft-off mode and not  
powered OFF.  
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2. HARDWARE SETUP  
2.2 System Memory  
NOTE: No hardware or BIOS setup is required after adding or removing memory.  
This motherboard has four 184-pin Rambus Inline Memory Modules (RIMM) sockets.  
These sockets support 64Mbit, 128Mbit, and 256Mbit Direct RDRAM technologies.  
Location  
Memory Module  
Subtotal  
RIMMA1  
(Rows 0&1)  
RDRAM  
x 1  
x 1  
x 1  
x 1  
=
C-RIMM (use when socket will not be populated)  
RIMMA2  
(Rows 2&3)  
RDRAM  
C-RIMM (use when socket will not be populated)  
RIMMB1  
(Rows 4&5)  
RDRAM  
C-RIMM (use when socket will not be populated)  
RIMMB2  
(Rows 6&7)  
RDRAM  
C-RIMM (use when socket will not be populated)  
TOTAL SYSTEM MEMORY  
(2GB Max)  
IMPORTANT  
1. The memory configuration of channelA(RIMMA1 and RIMMA2) and chan-  
nel B (RIMMB1 and RIMMB2) must be identical (see below).  
2. C-RIMMs (Continuity RIMM) must be used to complete the sockets that are  
not populated by RDRAMs. A C-RIMM is necessary to avoid breaking the  
signal lines, which are a serial connection in a Rambus interface, such as  
used in this motherboard. This assures the electrical integrity of a Rambus  
interface.  
3. When C-RIMMs are required, it is recommended that they be inserted into  
RIMMA2 and RIMMB2.  
a.  
b.  
c.  
C-RIMM  
128MB RDRAM  
RIMMB2  
RIMMB1  
NOTE: When using only two memory modules,  
it is recommended that you use configuration a.  
RIMMA2  
RIMMA1  
C-RIMM  
128MB RDRAM  
128MB RDRAM  
C-RIMM  
RIMMB2  
RIMMB1  
128MB RDRAM  
C-RIMM  
RIMMA2  
RIMMA1  
RIMMB2  
RIMMB1  
128MB RDRAM  
128MB RDRAM  
RIMMA2  
RIMMA1  
128MB RDRAM  
128MB RDRAM  
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2. HARDWARE SETUP  
2.2.1 Installing Memory  
The memory module (RIMM/C-RIMM) will fit in only one orientation.  
IMPORTANT: Do not touch the memory modules connectors. Handle the mod-  
ule only by the edges.  
WMT-LX  
WMT-LX 184-Pin RIMM Sockets  
1. Make sure that the notch keys in the module are aligned with the small ribs  
inside the RIMM sockets.  
MOUNTING NOTCH  
RDRAM (with heat spreader)  
NOTCH KEYS  
CONNECTORS  
(TOP VIEW)  
RIBS (inside socket)  
EJECTOR  
2. With the ejectors in the open position (as shown), push down gently but firmly  
on the memory module until it snaps into place. The guides on the sockets  
ejectors should go through the two mounting notches on the module and the  
ejectors should close. If necessary, push the ejectors inward to secure the mod-  
ule in place.  
Removing Memory  
To release a memory module, push both ejectors outward and pull the module straight  
up and out of the RIMM sockets.  
WARNING! RIMM modules become extremely hot during operation. To re-  
duce the risk of personal injury from hot surfaces, allow the modules to cool off  
before removing them.  
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2. HARDWARE SETUP  
2.3 Central Processing Unit (CPU)  
The motherboard provides a ZIF Socket for the P4 CPU. The CPU that came with  
the motherboard should have a fan attached to it to prevent overheating. If this is not  
the case, then purchase a fan before you turn on your system.  
Socket 423 Pentium 4  
Gold Arrow  
WMT-LX  
Gold Arrow  
WMT-LX Socket 423  
Before you start, you should check to see that you have the following items:  
Rubber Pad  
Metal Baseboard  
2 Metal heatsink retaining clips  
4 Copper captive nuts  
4 Washers  
4 Pan Head screws  
2 Heatsink support bases  
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2. HARDWARE SETUP  
3.5.1 CPU Installation  
Step 1: Install the Baseboard  
A metal baseboard is required to install the heatsink to the motherboard. A rubber  
pad is placed between the metal board and motherboard to provide insulation to  
prevent shorting.  
Align the rubber pad over  
the metal baseboard so that  
the holes match. Align the  
motherboard over the rub-  
ber pad and metal base-  
board so that the screws on  
the baseboard match up  
with the motherboard’s  
screw holes.  
Rubber Pad Metal Baseboard  
Place the four washers over the four  
screws on the baseboard.  
Tighten the four copper captive  
nuts over the washers.  
Copper captive nut  
®
d
Motherboar  
Washer  
IMPORTANT:  
This step is a MUST! The washers  
are necessary to prevent shorting.  
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HP WMT-LX Users Manual  
2. HARDWARE SETUP  
Step 2: Install the CPU  
A. L ocate the Z I F socket on the motherboard.  
B . Unlock the socket by pressing the lever sidesways and then lifting it up to a  
9 0˚ 1 0˚0angle.  
C . Align the C PU over the socket such that its notched or marked corner matches  
the sockets corner near the end of the lever, while making sure that the C PU is  
parallel to the socket.  
D . C arefully insert the C PU into the socket until it fits in place. The illustration  
below shows how to insert a C PU properly.  
CAUTION! The C PU fits in only one orientation. D o not force the C PU into the  
socket as it will bend the pins and damage the C PU. I t should drop into the  
socket with minimal pressure. I f not, check its orientation or check for bent pins.  
E . Secure the C PU into the socket by pushing the socket lever all the way down.  
Y ou will hear a click indicating that the lever is in place.  
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2. HARDWARE SETUP  
Step 3: Install the Heatsink Support Base  
Place the two heatsink support base as shown and screw in the four pan head screws.  
Step 4: Install the Heatsink  
C arefully place the fan heatsink on top of the heatsink support base and connect the  
fan power cable to the C PU fan connector.  
C onnect to the  
C PU fan connector.  
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HP WMT-LX Users Manual  
2. HARDWARE SETUP  
2.4 Expansion Cards  
WARNING! Unplug your power supply when adding or removing expansion  
cards or other system components. Failure to do so may cause severe damage to  
both your motherboard and expansion cards (see 3.3 Hardware Setup Proce-  
dure for more information).  
2.4.1 Expansion Card Installation Procedure  
1. Read the documentation for your expansion card and make any necessary hard-  
ware 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 PNP AND PCI SETUP)  
7. Install the necessary software drivers for your expansion card.  
2.4.2 Assigning IRQs for Expansion Cards  
Some expansion cards need an IRQ to operate. Generally, an IRQ must be exclu-  
sively 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 moth-  
erboard also has MIDI enabled, another IRQ will be used, leaving 4 IRQs free.  
Standard Interrupt Assignments  
IRQ  
0
Priority  
Standard Function  
System Timer  
1
1
2
Keyboard Controller  
2
N/A  
11  
12  
13  
14  
15  
3
4
5
6
7
Programmable Interrupt  
Communications Port (COM2)  
Communications Port (COM1)  
Sound Card (sometimes LPT2)  
Floppy Disk Controller  
Printer Port (LPT1)  
System CMOS/Real Time Clock  
ACPI Mode when enabled  
IRQ Holder for PCI Steering  
IRQ Holder for PCI Steering  
PS/2 Compatible Mouse Port  
Numeric Data Processor  
Primary IDE Channel  
3*  
4*  
5*  
6
7*  
8
9*  
10*  
11*  
12*  
13  
14*  
15*  
8
9
10  
Secondary IDE Channel  
*These IRQs are usually available for ISA or PCI devices.  
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2. HARDWARE SETUP  
Interrupt Request Table for this Motherboard  
INT-A INT-B INT-C INT-D INT-E INT-F INT-G INT-H  
PCI slot 1  
PCI slot 2  
PCI slot 3  
AGP slot  
USB HC0  
USB HC1  
SMB  
used  
shared  
shared  
used  
shared  
shared  
used  
shared  
shared  
AC97  
LAN (8139C)  
IMPORTANT: If using PCI cards on shared slots, make sure that the drivers sup-  
port “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.  
2.4.3 Accelerated Graphics Port (AGP) Pro Slot  
This motherboard provides an accelerated graphics port (AGP) pro slot to support a  
new generation of AGP graphics cards with ultra-high memory bandwidth.  
WMT-LX  
WMT-LX Accelerated Graphics Port (AGP)  
CAUTION! TheAGP Pro slot is shipped with a warning label over the 20-pin bay.  
DO NOT remove this label and the safety tab underneath it if you will be using an  
AGP card without a retention notch. Removing may cause the  
card to shift and may cause damage to your card, slot, and moth-  
erboard. Remove ONLY when you will be using an AGP Pro  
card. Use a rigid tip, such as a pen tip, to dislodge and remove  
the tab from the bay.  
Removing the tab  
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2.5 External Connectors  
WARNING! Some pins are used for connectors or power sources. These are  
clearly distinguished from jumpers in the Motherboard Layout. Placing jumper  
caps over these connector pins will cause damage to your motherboard.  
IMPORTANT: Ribbon cables should always be connected with the red stripe to  
Pin 1 on the connectors. Pin 1 is usually on the side closest to the power connec-  
tor on hard drives and CD-ROM drives, but may be on the opposite side on  
floppy disk drives. Check the connectors before installation because there may  
be exceptions. IDE ribbon cables must be less than 46 cm (18 in.), with the  
second drive connector no more than 15 cm (6 in.) from the first connector.  
1) PS/2 Mouse Connector (Green 6-pin PS2MS)  
The system will direct IRQ12 to the PS/2 mouse if one is detected. If  
one is not detected, expansion cards can use IRQ12. See PS/2 Mouse  
Function Control in 4.4 Advanced Menu.  
PS/2 Mouse (6-pin Female)  
2) PS/2 Keyboard Connector (Purple 6-pin PS2KB)  
This connection is for a standard keyboard using an PS/2 plug (mini  
DIN). This connector will not allow standard AT size (large DIN)  
keyboard plugs. You may use a DIN to mini DIN adapter on stan-  
dard AT keyboards.  
PS/2 Keyboard (6-pin Female)  
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3) Parallel Port Connector (Burgundy 25-pin PRINTER)  
You can enable the parallel port and choose the IRQ through Onboard  
Parallel Port (see 4.4.2 I/O Device Configuration).  
NOTE: Serial printers must be connected to the serial port.  
Parallel (Printer) Port (25-pin Female)  
4) Serial Port Connectors (Teal/Turquoise 9-pin COM1)  
One serial port is ready for a mouse or other serial devices. A second  
serial header is available using a serial port bracket connected from the  
motherboard to an expansion slot opening. See Onboard Serial Port  
1/2 in 4.4.2 I/O Device Configuration for settings.  
Serial Port (9-pin Male) COM 1  
5) IEEE-1394 Controller Interface Connector (6-pin 1394_CON)  
This connector supports external digital devices.  
IEEE 1394 (6-pin Male)  
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6) Universal Serial Bus Ports (Black two 4-pin USB)  
Two USB ports are available for connecting USB devices. For addi-  
tional USB ports, you can use the USB headers (see USB Headers later  
in this section).  
NOTE: USB Function (see 4.4.3 PCI Configuration) must be Enabled  
to use these ports.  
USB 1  
Universal Serial Bus (USB) 2  
7) Fast-Ethernet Port Connector (RJ45)  
The RJ45 connector is optional at the time of purchase and is located on  
top of the USB connectors. The connector allows the motherboard to  
connect to a Local Area Network (LAN) through a network hub.  
RJ-45  
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2. HARDWARE SETUP  
8) Primary (Blue) / Secondary IDE Connectors (Two 40-1pin IDE)  
These connectors support the IDE hard disk ribbon cable. Connect the  
cables blue connector to the motherboards primary (recommended) or  
secondary IDE connector, and then connect the gray connector to your  
UltraDMA/100 slave device (hard disk drive) and the black connector  
to your UltraDMA/100 master device. It is recommended that non-  
UltraDMA/100 devices be connected to the secondary IDE connector.  
If you install two hard disks, you must configure the second drive to  
Slave mode by setting its jumper accordingly. Please refer to your hard  
disk documentation for the jumper settings. BIOS now supports specific  
device bootup (see 4.6 Boot Menu). (Pin 20 is removed to prevent  
inserting in the wrong orientation when using ribbon cables with  
pin 20 plugged).  
TIP: You may configure two hard disks to be both Masters with two  
ribbon cables one for the primary IDE connector and another for the  
secondary IDE connector. You may install one operating system on an  
IDE drive and another on a SCSI drive and select the boot disk through  
4.6 Boot Menu.  
IMPORTANT: UltraDMA/100 IDE devices must use a 40-pin 80-conductor IDE  
cable for 100MByte/sec transfer rates.  
NOTE: Orient the red markings  
(usually zigzag) on the IDE  
ribbon cable to PIN 1.  
WMT-LX  
PIN 1  
WMT-LX IDE Connectors  
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9) Floppy Disk Drive Connector (34-1pin FLOPPY)  
This connector supports the provided floppy drive ribbon cable. After  
connecting the single end to the board, connect the two plugs on the  
other end to the floppy drives. (Pin 5 is removed to prevent inserting  
in the wrong orientation when using ribbon cables with pin 5  
plugged).  
FLOPPY  
NOTE: Orient the red markings on  
the floppy ribbon cable to PIN 1.  
WMT-LX  
PIN 1  
WMT-LX Floppy Disk Drive Connector  
10) IEEE-1394 Headers (8-pin 1394HEAD2/1394HEAD3)  
These headers support an IEEE-1394 serial connector cable set that mounts  
to a standard expansion slot in the computer case. 1394-compliant inter-  
nal fixed disk drives may also be connected to these headers.  
+12V  
Ground  
Ground  
TPA3+  
TPA3-  
TPB3+  
TPB3-  
Ground  
+12V  
Ground  
TPB2-  
TPB2+  
TPA2-  
TPA2+  
Ground  
Ground  
1394HEAD3 1394HEAD2  
WMT-LX  
WMT-LX IEEE-1394 Headers  
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11)POWER (PWR_FAN), CPU (CPU_FAN), Fan Connectors (3 pins)  
These connectors support cooling fans of 350mA (4.2 Watts) or less.  
Orientate the fans so that the heat sink fins allow airflow to go across the  
onboard heat sink(s) instead of the expansion slots. Depending on the  
fan manufacturer, the wiring and plug may be different. The red wire  
should be positive, while the black should be ground. Connect the fan’s  
plug to the board taking into consideration the polarity of the connector.  
NOTE: The “Rotation” signal is to be used only by a specially designed fan  
with rotation signal. The Rotations per Minute (RPM) can monitored using  
a utility such as HP PC Probe or Intel LDCM.  
WARNING! The CPU and/or motherboard will overheat if there is no  
airflow across the CPU and onboard heatsinks. Damage may occur to  
the motherboard and/or the CPU fan if these pins are incorrectly used.  
These are not jumpers, do not place jumper caps over these pins.  
CPU_FAN  
GND  
+12V  
PWR_FAN  
Rotation  
WMT-LX  
WMT-LX 12-Volt Cooling Fan Power  
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12)Wake-On-LAN Connector (3-pin WOL)  
This connector connects to a LAN card with a Wake-On-LAN output,  
such as the HP PCI-L101 Ethernet card (see 7. Appendix). The connec-  
tor powers up the system when a wakeup packet or signal is received  
through the LAN card.  
IMPORTANT: This feature requires that Wake On LAN or PCI Mo-  
dem is enabled (see 4.5.1 Power Up Control) and that your system has  
an ATX power supply with at least 720mA +5V standby power.  
IMPORTANT: Requires an ATX power  
supply with at least 720mA +5 volt  
standby power  
WOL_CON  
+5 Volt Standby  
PME  
WMT-LX  
Ground  
WMT-LX Wake-On-LAN Connector  
13)USB2/3 Headers (10-1 pin USB2/3)  
If the USB Ports on the back panels are inadequate, a USB header is  
available for two additional USB ports. Connect the 10-1 pin ribbon  
cable from the provided 2-port USB connector set to the midboard 10-1  
pin USB header and mount the USB connector set to an open slot on  
your chassis.  
USB23  
2
1
12  
11  
WMT-LX  
WMT-LX USB Port  
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14)Power Supply Connectors (20-pin block ATXPWR)  
(6-pin AUXPWR)  
(4-pin ATX12V)  
These connectors connect to anATX 12V power supply. Each plug from  
the power supply will only insert in one orientation because of the dif-  
ferent hole sizes. Find the proper orientation and push down firmly mak-  
ing sure that the pins are aligned. An auxiliary power supply may be  
needed depending on your system configuration.  
IMPORTANT: Make sure that your ATX 12V power supply (minimum  
recommended wattage: 230 watts; 300W for a fully-configured system)  
can supply at least 20 amperes on the +5-volt lead and at least 720mA on  
the +5-volt standby lead (+5VSB). Your system may become unstable/  
unreliable and may experience difficulty in powering up if your power  
supply is inadequate. For Wake-On-LAN support, your ATX power sup-  
ply (minimum recommended wattage: 230watts) must supply at least  
720mA +5VSB.  
ATX12V  
COM +12V DC  
Pin 1  
ATXPWR  
COM +12V DC  
Pin 1  
+12.0VDC  
+5VSB  
PWR_OK  
COM  
+5.0VDC  
+5.0VDC  
-5.0VDC  
COM  
+5.0VDC  
COM  
COM  
COM  
WMT-LX  
+5.0VDC  
COM  
PS_ON#  
COM  
+3.3VDC  
+3.3VDC  
-12.0VDC  
+3.3VDC  
WMT-LX ATX &  
Auxiliary Power Connectors  
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The following diagram is for items 1522  
Keyboard Lock  
SMI Lead  
Speaker  
Connector  
Message LED  
ATX Power  
Switch*  
Reset SW  
WMT-LX  
IDELED  
Power LED  
WMT-LX System Panel Connectors * Requires an ATX power supply.  
15) ATX Power Switch Lead (2 pin PWR)  
The system power is controlled by a momentary switch connected  
to this lead. Pressing the button once will switch the system be-  
tween ON and SOFT OFF. Pushing the switch while in the ON  
modefor more than 4 seconds turns the system off. The system  
power LED shows the status of system power.  
16) IDE Activity LED (2 pin IDELED)  
This connector supplies power to the cabinets IDE activity LED.  
Reading and writing activity by devices connected to the Primary/  
Secondary IDE causes the LED to light up.  
17) System Power LED Lead (3-1 pin PLED)  
This 3-1 pin connector supplies the system power LED, which lights  
when the system is powered on and blinks in sleep or soft-off mode.  
18) Reset Switch Lead (2 pin RESET)  
This 2 pin connector powers the case-mounted reset switch for  
rebooting without having to turn off the power switch. Use the  
reset switch to prolong the life of the power supply.  
19) System Message LED Lead (2 pin MLED)  
This LED indicates an incoming of message from a fax/modem.  
The LED will remain lit when there is no signal and blink when  
data is received. This LED requires an ACPI OS and a driver.  
20) Keyboard Lock Switch Lead (2 pin KEYLOCK)  
This 2-pin connector connects to the case-mounted key switch to  
allow keyboard locking.  
21) System Management Interrupt Switch Lead (2 pin SMI)  
This is a system power switch that allows the user to put the  
systeminto suspension to save electricity and prolong the life of  
certain components. The connector supports a 2 pin case-mounted  
switch.  
22) System Warning Speaker Connector (4 pin SPEAKER)  
This 4-pin connector supplies the case-mounted speaker. Two  
sources (LINE_OUT and SPEAKER) support system beeps and  
warnings. Only this SPEAKER connector supports system beeps  
before the integrated audio has been properly initialized.  
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23) Erasing the CMOS Real Time Clock (RTC) RAM  
A Note about Passwords  
BIOS Setup programs allow you to specify passwords in the Main menu.  
The passwords control access to the BIOS during system startup. The  
passwords are not case sensitive. The BIOS Setup program allows you  
to specify two separate passwords: a Supervisor password and a User  
password. When disabled, anyone may access all BIOS Setup program  
functions. When enabled, the Supervisor password is required for entering  
the BIOS Setup program and having full access to all configuration fields.  
Forgot the Password?  
If you forgot the password, you can clear the password by erasing the CMOS  
Real Time Clock (RTC) RAM. The RAM data containing the password  
information is powered by the onboard button cell battery. To erase the RTC  
RAM: (1) Unplug your computer, (2) Move jumpers from Normal [2-3] to  
Clear CMOS [1-2], then immediately return the jumper cap to the Normal  
position [2-3], (3) Turn ON your computer, (4) Hold down <Delete> during  
bootup and enter BIOS setup to re-enter user preferences.  
CLRTC  
3
2
1
2
WMT-LX  
Clear CMOS  
Normal  
WMT-LX Clear RTC RAM  
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