Appendix C I/O Pin Assignments
113
C.4 COM3 RS-232 serial port (CN4)
Table C-4: COM3 RS-232 serial port
Pin Signal
1 DCD
2 RxD
3 TxD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9RI
C.5 COM4 RS-232 serial port (CN5)
Table C-5: COM4 RS-232 serial port
Pin Signal
1 DCD
2 RxD
3 TxD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9RI
1
5
2
3
4
9
6
7
8
