Appendix C System Board Connector Pinouts 209
Keyboard and Mouse Connector
TABLE C-3 lists connector pin assignments and signal descriptions for the keyboard
and mouse connector.
FIGURE C-3 Keyboard and Mouse Connector
TABLE C-3 Keyboard/Mouse Connector Pin Assignments
Pin Function I/O Level Signal Description
1 Ground O GND Ground
2 Ground O GND Ground
3 +5 VDC O VCC Power
4 Mouse In I TTL Input from mouse
5 KeyBd Out O TTL Keyboard output
6 KeyBd In I TTL Keyboard input
7 PowerOn* I TTL Power-on key
8 +5VDC O VCC Power
* Active low signal
5 43
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