Moxa Technologies CP-134N Series - Female DB25 (OPT8 A+;S+)

PCI Express Boards Pin Assignments
7-18
Female DB25 (OPT8A+/S+)
PIN RS-232 RS-422/RS-485-4W RS-485-2W
2 RxD TxD+(B) –
3 TxD RxD+(B) Data+(B)
4 CTS – –
5 RTS – –
6 DTR RxD-(A) Data-(A)
7
GND
GND
GND
8 DCD TxD-(A) –
20 DSR – –