EMERALD-MM-8 , 27-129142-00 8-Port RS-232/RS-422/RS-485 PC/104 Module. SKUE20
Built on the compact PC/104 or PC/104-Plus form factor, it is designed to add extensive, rugged serial and digital I/O capabilities to embedded computing systems. In RS-422 mode, Signals RX+, RX-, TX+, and TX- are provided, along with ground.