None, Even, Odd, Space, Mark

4 Port UPCI Board, w/ DB25M Cable, RS-232, LowProfile

8 Port PC/104+ Board, RS-232

4 Port PC/104+ Board, RS-232/422/485, Wide Temperature

4 Port PC/104+ Board, RS-232/422/485

4 Port PC/104+ Board, RS-422/485, w/ Isolation

4 Port PC/104+ Board, RS-422/485, w/ Isolation, Wide Temperature