Compaq 4120T User Manual
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Appendix A
Connector Pin Assignments
A-1
Connector Pin Assignments
This appendix contains the pin assignments for all external connectors.
Table A-1
External Keyboard
Connector
Pin
Signal
KEY
6
5
4
3
2
1
1
2
3
4
5
6
2
3
4
5
6
Data
Unused
Ground
+5 VDC
Clock
Unused
Unused
Ground
+5 VDC
Clock
Unused
Table A-2
PS/2-Compatible Mouse
Connector
Pin
Signal
KEY
6
5
4
3
2
1
1
2
3
4
5
6
2
3
4
5
6
Data
Unused
Ground
+5 VDC
Clock
Unused
Unused
Ground
+5 VDC
Clock
Unused
Table A-3
MIDI/Game
9
15
8
1
Pin
Signal
Pin
Signal
1
+5 V
9
+5 V
2
Joystick Button
10
Joystick Button
3
Joystick Direction
11
Joystick Direction
4
Ground
12
MIDI Out
5
Ground
13
Joystick Direction
6
Joystick Direction
14
Joystick Button
7
Joystick Button
15
MIDI In
8
+5 V