... SDS8001 is a single-port secure device server that connects RS-232/422/485 serial devices to the industry standard 10 ... , software Xon/Xoff Signals: RS232: RS232: Rx, Tx, RTS, CTS, DTR, DSR, DCD, GND RS422: Rx+, Rx-, Tx+, Tx- RS485: Data+, Data- Modem ... controls: DTR/DSR, DCD and RTS/CTS 1-port RS-232/422/485 ...