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 module’s 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 socket’s
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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