VIA Technologies P4M800 Instruction manual

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TRADEMARK
All products and company names are trademarks or registered
trademarks of their respective holders.
These specifications are subject to change without notice.
Manual Revision 1.0
September 29, 2005
6000002VKM310
VIAVIA
VIAVIA
VIA P4M800P4M800
P4M800P4M800
P4M800 mainboardmainboard
mainboardmainboard
mainboard
for Intel Socket 775 processorfor Intel Socket 775 processor
for Intel Socket 775 processorfor Intel Socket 775 processor
for Intel Socket 775 processor

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English
DISCLAIMER OF WARRANTIES:
THEREARENOWARRANTIESWHICHEXTENDBEYONDTHE
DESCRIPTION ON THE FACE OF THE MANUFACTURER LIMITED
WARRANTY. THE MANUFACTURER EXPRESSLY EXCLUDES ALL
OTHERWARRANTIES,EXPRESS ORIMPLIED, REGARDINGITS
PRODUCTS; INCLUDING ANY IMPLIED WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
NONINFRINGEMENT. THIS DISCLAIMER OF WARRANTIES SHALL
APPLY TO THE EXTENT ALLOWED UNDER LOCAL LAWS IN THE
COUNTRY PURCHASED IN WHICH LOCAL LAWS DO NOT ALLOW
OR LIMIT THE EXCLUSION OF THE IMPLIED WARRANTIES.

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Processor Support
Socket LGA775 for Intel®Celeron D®3xx series, Intel®Pentium 4®5xx/6xx
series up to 3.4GHz
Support Intel Pentium®with Dual core processor up to 2.8GHz
Support 533/800 MHz front-side bus
Chipset
VIA P4M800ce + 8237R Plus AGPset with VIA Unichrome Pro Graphics core
Main Memory
Two 184-pin DDR SDRAM DIMM sockets
Support single-sided or double-sided 2.5v DDR-266/333/400 DIMMs in 64/128/256/
512Mb/1Gb technologies
Support up to 2GB memory size
Expansion Slots
Three PCI connectors compliant with PCI v2.2
One 1.5v AGP-8X connector compliant with AGP v3.0
One CNR (Communication & Networking Riser) slot for V.92 analog Modem in
Secondary mode
IDE
Two IDE interfaces (up to 4 IDE devices) with UDMA-33, ATA-66/100/133
support from chipset IDE controller
USB
Eight USB connectors compliant with USB2.0 from embedded USB controller (4
connectors at rear panel)
S-ATA
Two S-ATA ports with up to 150MB/s bandwidth with RAID 0, 1, JBOD support
LAN
Integrates 10/100Mps Fast Ethernet controller with onboard VIA 6103L PHY LAN
I/O
Fintek LPC IO controller with PS/2 keyboard&mouse, floppy, printer, serial and
CIR/SIR interface
Support Hardware Monitoring function
Intelligent fan speed control for CPU-fan (PWM) for quiet operation
1. Specification

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Audio
Onboard Realtek ALC-655 selectable 2 or 6-CH audio CODEC
- AC’97 v2.3 compliant
- Supports CD-In, Aux-In
- Supports automatic “jack-sensing”
- Rear panel audio jacks configuration:
roloCkcaJoiduA lennahc2 lennahc6
eulBthgiLni-eniLtuo-oeretsraeR
emiLtuo-eniLtuo-oeretstnorF
kniPni-ciMrefoowbuS&retneC
BIOS
Flash EEPROM with Award Plug & Play BIOS
Support ACPI S3 (Suspend To RAM) mode in ACPI compliant O/S
Support EZ Boot for fast bootable device selection
Support Magic Health for system hardware status report during system boot-up
Special Features
Support KBPO function – Keyboard power on, turn on the computer from keyboard
Support Wake-On-LAN by PME
Support USB resume in S3
PowerBIOS for excellent overclocking features:
- Programmable FSB Clock output frequency with 1MHz fine tuning
- Support BIOS adjustable CPU multiplier, FSB clock settings
Form Factor
245mm x 230 mm Micro-ATX size
Supported O/S
Windows 98SE/ Windows 2000/Windows XP

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1.2 Block Diagram

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2. Setting up the mainboard
Before assembling the mainboard into the PC case we recommend you to do the following:
1. CPU Installation
2. DDR Memory Insertion
After the mainboard is fitted into the case, you may
3. Install Add-on VGA or PCI cards (Optional)
4. Connect the internal cables and wires
5. Connect your external peripherals to the rear I/O port
3.1 CPU Installation
3. Installation
Step 1
Open load plate ( A ) , DO NOT touch
socket contacts ( B ).
Step 2
Remove protective cover ( C ) from load
plate. Please do not discard the protective
cover. Always replace the protective cover
if the processor is removed from the socket.
12

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Step 3
Remove the processor from the protective
cover. Do not touch the bottom of the
processor. The processor cover should not
be discarded. Always replace the processor
cover if the processor is removed from the
socket.
Step 4
Hold the processor with thumb and index
fingers as shown. Ensure fingers align to the
socket cutouts ( D ) , processor notches ( E )
align to socket convexes ( F ). Place the
processor straight down without tilting or
sliding in the socket.
Step 5
Place the fan heatsink onto the mainboard
with the fasteners align to the holes. Be care
not to damage the thermal interface material
attached to the bottom of the heatsink.
Rotate the clips 90 degrees to lock the CPU
cooler in place.
Connect the fan cable to the mainboard
header JCPU_FAN.
3 4
5
The CPU is keyed to prevent incorrect insertion, do not
force the CPU into the socket. If it does not go in easily,
check for mis-orientation.
Fan Clips

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3.3 VGA and PCI card installation
This mainboard is equipped with on-chip graphics engine, you may connect a VGA monitor
directly to its rear port. However, if you need to install VGA card follow the steps below.
To install a VGA card into the AGP slot or a PCI expansion card:
1. Remove the bracket (on the PC case) for the slot you intend to use.
2. Firmly press down the card into the slot until it is completely seated. For an AGP
card ensure the AGP slot clicker is locked as shown in the picture below.
3. Secure the card's bracket to the PC case with a screw.
3.2 DDR Memory Insertion
The mainboard accommodates two PC2100/PC2700/PC3200 184-pin DIMMs (Dual In-line
Memory Modules):
• Supports up to 2.0GB of 266/333/400MHz DDR SDRAM.
• Supports unbuffered non-ECC DIMMs.
•DDR SDRAM supports 64, 128, 256, 512MB and 1GB DIMM modules.
• Supports DRAM configurations defined in the JEDEC DDR DIMM specification.
The AGP slot supports only newer VGA cards with 1.5V specifications.
To install, align the notch on the
DIMM module with the connector.
Press straight down as shown in the
figure until the white clips close and
the module fits tightly into the
DIMM socket.
Notch

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3.5 Internal Connectors
3.4 Rear IO Port
7
2
1
8
3
9
10
COM
Parallel Port RJ-45
LAN
USB2.0 ports
PS/2
Mouse
PS/2
Keyboard Mic-in/Center&Subwoofer (Pink)
Line-out/Front out (Lime)
Line-in/Rear out (Light blue)
VGA
1
4
4
5
6
11

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Connectors Figure Discriptions
1
Ground
+12V
Sense
JCPU_FAN
JPWR_FAN
CPU / Power Fan Power Connectors
JCPU_FAN: Connect the CPU fan to this
connector.
JPWR_FAN: Use this connector if you are
installing an additional fan in the unit.
2FDD Floppy Drive Connector
3IDE1
Primary IDE
IDE2
Secondary IDE
1
1
Primary/Secondary IDE Connector
Connects to the IDE device, i.e. HDD and CD-
ROM device.
4PW1
PW12
1
3
1
-12V3.3V
Ground+5V
PS-ON+5V
-5VPW-OK
+5V5VSB
+5V+12V
+12V+12V
10
11
4
2
3.3V3.3V
GroundGround
GroundGround
GroundGround
GroundGround
20 PW1: 20-pin ATX Power Connector
PW12: 4-pin ATX12V Power Connector
The plugs of the power cables are designed to fit
in only one orientation.
5CFPA
1
Rear Line-out-FR
Front Line-out-R
Rear Line-out-FL
Front Line-out-L
MIC_In
NC +5V
Key
9
2
10
GND
CFPA: Front Panel Audio Connector
This connector is used only if the speaker and
microphone needs to be plugged at the front of
the PC case. Otherwise, leave the jumpers at the
default position.
1When using two IDE drives on the same
connector, one must be set to Master
mode and the other to Slave mode.
Refer to your disk drive user’s manual
for details.
6
CD-IN/AUX-IN: CD Audio-in connectors
These connectors are used to receive audio from a
CD-ROM drive, TV tuner or MPEG card.
CD_IN_Left
1
CD_IN_Right
CD_Reference
AUX_IN_Left
1
AUX_IN_Right
GND
CD-IN
AUX-IN
The PW1 and PW12 Power Connector
must be used simultaneously.
Ground
+12V
Sense
Control