User`s manual

PCI Express Boards Pin Assignments
5-7
Male DB25 (OPT8B+/ CBL-M68M25x8-100)
Pin
RS-232
2
TxD
3
RxD
4
RTS
5
CTS
6
DSR
7
GND
8
DCD
20
DTR
Female DB25 (OPT8A+/S+)
Pin
RS-232
2
RxD
3
TxD
4
CTS
5
RTS
6
DTR
7
GND
8
DCD
20
DSR
Female DB25 (OPT8F+/Z+)
Pin
RS-422
2
RxD+(B)
3
TxD+(B)
7
GND
14
RxD-(A)
16
TxD-(A)