ATX PS/2 Keyboard and PS/2
Mouse Ports
The ATX PS/2 keyboard and the PS/2
mouse are located at J28. See the
table on the right for pin definitions.
(The mouse port is above the key-
board port. See the table on the right
for pin definitions.)
PS/2 Keyboard and
Mouse Port Pin
Definitions
Pin# Definition
1 Data
2 NC
3 Ground
4 VCC
5 Clock
6 NC
Serial Ports
COM 1 (JGS1) and COM 2 (JGS1)
are connectors located on the IO
Backpanel, COM 3 (J14) and COM 4
(J15) are headers. See the table on
the right for pin definitions.
Serial Port Pin Definitions
Pin # Definition Pin # Definition
1 DCD 6 DSR
2 RXD 7 RTS
3 TXD 8 CTS
4 DTR 9 RI
5 Ground 10 NC
A. Keyboard/Mouse
B.
COM1
C. COM2
D. COM3
E. COM4
(Pin 10 is available on COM2
only. NC: No Connection.)
B
A
C
D
E