PCI Express Boards Pin Assignments
Male DB25 (OPT8B+/ CBL-M68M25x8-100)
Pin RS-232
2 TxD
3 RxD
4 RTS
5 CTS
6 DSR
8 DCD
20 DTR
Female DB25 (OPT8A+/S+)
Pin RS-232
2 RxD
3 TxD
5 RTS
6 DTR
7 GND
8 DCD
20 DSR
CP-104EL-A
Board Side Pin Assignments-Female DB44
RS-232
Port 1 Port 2 Port 3 Port 4
13 TxD 9 TxD 5 TxD 1 TxD
14 RxD 10 RxD 6 RxD 2 RxD
15 RTS 11 RTS 7 RTS 3 RTS
28 CTS 24 CTS 20 CTS 16 CTS
30 DSR 26 DSR 22 DSR 18 DSR
42 DCD 39 DCD 35 DCD 31 DCD