11
Motherboard Information
Chapter 3
Network Application Platforms
M14
ATX Power Connector(ATX1, ATX2): These 20-pin
and 4-pin connectors are for connecting ATX power
supply plugs. Find the proper orientation when
inserting the plugs, for the supply plugs are designed
to fit these connectors in only one orientation.
M15
DIMM Socket: The 200-pin DDR2 SO-DIMM is for
connecting the DDR2 800/667 memory. The system
can support up to 8 GB in maximum.
M16
SATA 1 and 2 Connectors(J3, J4): It is for connecting
a 2.5'' SATA harddisk to be served as your system's
storage. The system can support up to 2 disks in
maximum.
M17
Clear CMOS jumper (J19): It is for clearing the CMOS
memory and system setup parameters by erasing
the data stored in the CMOS RAM such as the system
passwords.
M18
Serial Interface Connectors(J13, COM2): It is for
connecting the RS-232 serial port module cable.
M19
CPU Socket: The LGA 775 socket is for connecting the
CPU.
M20
CPU Fan Connectors(CON1/CON2/CON3): The 4-pin
connector is for connecting the CPU fan.
M21
System Fan Connector(CON5): The 4-pin connector is
for connecting the system fan.
M22
LPC I/O bus (Port 80) (LPC1): It is a proprietary
connector for connecting a checkpoint device to
output checkpoints throughout bootblock and
Power-On Self Test (POST) to indicate the task the
system is currently executing.
Pin No.
Function
--
Normal (Default)
1-2
Clear CMOS
PIN NO.
1
3
5
7
9
Function Data Carrier
Detected
Received
Data
Transmitted
Data
Data Terminal
Ready
Signal
Ground
Function Data Set
Ready
Request to
Send
Clear to
Send
Ring Indicator
Signal
Ground
PIN NO.
2
4
6
8
10
2 4 6 8 10
1 3 5 7 9
2 1
Pin No.
Function
1
GND
2
+12VDC
3
Sense
4
Control
4 3 2 1
PIN NO.
1
3
5
7
9
Function
CLK
PLTRST#
FRAME#
AD3
AD2
Function
AD1
AD0
VCC
GND
GND
PIN NO.
2
4
6
8
10
2 4 6 8 10
1 3 5 7 9