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Chapter 5: Advanced Motherboard Setup
5-15
ATX PS/2 Keyboard and
PS/2 Mouse Ports
The ATX PS/2 keyboard and the
PS/2 mouse are located on J29.
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
(J29)
Pin
Number
1
2
3
4
5
6
Definition
Data
NC
Ground
VCC
Clock
NC
Fan Header Pin Definitions
Pin
Number
1
2
3
Definition
Ground (black)
+12V (red)
Tachometer
Caution: These fan headers
are DC power.
Fan Headers
The motherboard has three fan
headers. These are designated
CPU 1 Chassis Fan, CPU 2 Chas-
sis Fan and Chassis Fan 3. See
the table on the right for pin defini-
tions.
Serial Ports
The COM1 serial port is located
under the parallel port. See the
table on the right for pin defini-
tions. The COM2 connector is a
header located near the BIOS chip
on the motherboard.
LAN1/2 (Ethernet Ports)
Two Ethernet ports (designated
LAN1 and LAN2) are located be-
side the VGA port on the IO
backplane. These ports accept
RJ45 type cables.
Serial Port Pin Definitions
(COM1, COM2)
Pin Number Definition
1 CD
2 RD
3 TD
4 DTR
5 Ground
Pin Number Definition
6 DSR
7 RTS
8 CTS
9 RI
10 NC
Note: Pin 10 is included on the header but
not on the port.