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Chapter 5: Advanced Motherboard Setup
5-15
PS/2 Keyboard and Mouse
Ports
The ATX PS/2 keyboard and the
PS/2 mouse are located on J11.
See the table on the right for pin
definitions. (The mouse port is
above the keyboard port. See Fig-
ure 2-3.)
PS/2 Keyboard
and Mouse Port
Pin Definitions
(J11)
Pin
Number
1
2
3
4
5
6
Definition
Data
NC
Ground
VCC
Clock
NC
Fan Header Pin Definitions
(CPU/CHS/OH Fans)
Pin
Number
1
2
3
Definition
Ground (black)
+12V (red)
Tachometer
Caution: These fan headers
are DC power.
Fan Headers*
The motherboard has CPU, chas-
sis and overheat fan headers des-
ignated CPU, CHS and OH FAN, re-
spectively. See the table on the
right for pin definitions.
Serial Ports
The COM1 serial port is located
under the parallel port (see Figure
2-3). See the table on the right for
pin definitions. The COM2 connec-
tor is a header located near the
DIP switch on the motherboard.
Serial Port Pin Definitions
(COM1, COM2)
Pin Number Definition
1 DCD
2 DSR
3 Serial In
4 RTS
5 Serial Out
Pin Number Definition
6 CTS
7 DTR
8 RI
9 Ground
10 NC
LAN1/LAN2 Ethernet Ports
Two Ethernet ports are located
beside the VGA port on the IO
backplane. These ports accept
RJ45 type cables. See the next
section for a description of the
LEDs on the LAN ports. Both are
100 Mb Ethernet ports.