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41 Appendix B
B.4 COM port
B.5 PS/2 Keyboard and Mouse Connector
PS/2 keyboard and mouse port pin definitions
Table B.4: COM Port Pin Definitions
PIN RS-232
1 NDCD
2 NRX
3NTX
4 NDTR
5GND
6 NDSR
7NRTS
8 NCTS
9 NRI
Table B.5: PS/2 Keyboard & Mouse Port Pins
Pin Signal
1 KB DATA
2MS DATA
3GND
4VCC
5 KB CLOCK
6MS CLOCK