MSI P4m900m3l Manual

MS-7255 Mainboard
1-2Processor Support*
- Supports Intel®
 Pemtium 4 Extreme Edition, Pentium 4, Pentium
D (805/820), Pentium D (920/925/930), Celeron D and Intel®
CoreTM
 2 Duo processors in the LGA775 package.
- Supports 3/4 pin CPU Fan Pin-Header with Fan Speed Control.
- Supports EIST Technology
- Supports Hyper-Threading (HT) Technology
- Supports Intel Dual Core Technology
We recommend use processor with 95w power consumption (805/
820/920/925/930)
Supported FSB
- 533/800/1066 MHz
Chipset
- North...

1-3 Getting Started
Connectors
Back Panel
- 1 PS/2 mouse port
- 1 PS/2 keyboard port
- 1 serial port (COM1)
- 1 parallel port supporting SPP/EPP/ECP mode
- 1 D-Sub VGA port
- 1 IEEE 1394 port (Optional)
- 4 USB 2.0 ports
- 1 LAN jack
- 6 flexible audio jacks.
On-Board Pinheaders
- 1 front Audio pinheader
- 1 CD-in pinheader
- 1 SPDIF-out pinheader
- 1 IEEE 1394 pinheader (Optional)
- 2 USB 2.0 pinheaders
- 1 serial port pinheader (JCOM2)
Slots
- 1 PCI Express x16 slot
- 1 PCI Express x1 slot
- 2 PCI...

MS-7255 Mainboard
1-4MS-7255 v1.X/v2.X M-ATX MainboardMainboard LayoutPCI 2JPWR2JPWR1
PCI 1PCI E_2 PCIE_1BATT+IDE 1IDE 2
FDD 1
JCOM2VIAVT8237AVIAP4M890/ P4M900
DIMM1
DIMM2BIOSJUSB1
J1394_1JUSB2SATA1 SATA2JCD1JAUD1JSPDIFOUT1VIA
VT6307
/ VT6308
VT1708Winbond
W83627EHGJFP2JFP1
SYSFAN1PWRFAN1CPUFAN1
JBAT1
JCASE1Top : mouse 
Bottom:
keyboard
Top : 
Parallel Port
Bottom: 
COM portA
VGA port
Top: LAN Jack
Bottom: USB ports  Top:1394
Bottom: USB ports T:
M:
B:Line-In
Line-Out
Mic
T:RS-Out
M:CS-Out
B:SS-OutVIA...

1-5 Getting StartedPacking ChecklistPower CableSATA Cable (Optional)
MSI motherboardMSI Driver/Utility CD
* The pictures are for reference only. Your packing contents may vary depending on
the model you purchased.Back IO ShieldStandard Cable for
IDE DevicesUser’s GuideCH1 Getting Started.p65  2006/9/15, 下午 02:135 

MS-7255 Mainboard
1-6The PC AlertTM
 4 is a utility you can find in the CD-ROM disk. The utility is  just like
your PC doctor that can detect the following PC hardware status during real time
operation:
ö  monitor CPU & system temperatures
ö  monitor fan speeds
ö  monitor system voltages
If one of the items above is abnormal, the program main screen will be immedi-
ately shown on the screen, with the abnormal item highlighted in red.  This will
continue to be shown until the condition returns to the...

MS-7255 Mainboard
2-2Quick Components GuideCH2 Hardware Setup.p65  2006/9/15, 下午 02:142 

2-3 Hardware SetupCPU (Central Processing Unit)
This mainboard supports Intel®
 Pentium 4 processor in LGA 775 package.  When you
are installing the CPU, make sure to install the cooler to prevent overheating.
If you do not have the CPU cooler, contact your dealer to purchase and install them
before turning on the computer.
For the latest information about CPU, please visit http://www.msi.com.tw/program/
products/mainboard/mbd/pro_mbd_cpu_support.php.Important
1. Overheating will seriously damage the CPU...

MS-7255 Mainboard
2-42.Remove the cap from lever hinge
side (as the arrow shows). 1.The CPU has a plastic cap on it to
protect the contact from damage.
Before you install the CPU, always
cover it to protect the socket pin.
3.The pins of socket reveal. CPU & Cooler Installation
When you are installing the CPU, make sure the CPU has a cooler at-
tached on the top to prevent overheating. If you do not have the cooler, contact
your dealer to purchase and install them before turning on the computer....

2-5 Hardware SetupImportant
1.Confirm if your CPU cooler is firmly installed before turning on your system.
2. Do not touch the CPU socket pins to avoid damaging.
3. The availability of the CPU land side cover depends on your CPU packing.
6.After confirming the CPU direction
for correct mating, put down the
CPU in the socket housing frame.
Be sure to grasp on the edge of
the CPU base. Note that the align-
ment  keys are matched.
8.Cover the load plate onto the
package.7.Visually inspect if the CPU is...