Planet Industrial 2-Port RS232/RS422/RS485 Serial Device Server. Two DB9 interfaces that support RS232, 2-wire RS485, 4-wire RS485 and RS422 operation. Asynchronous serial data rates up to 921600bps. Data mode includes VCOM, RFC2217, TCP server, TCP client, UDP, remote pairing, Modbus converter server / client and serial telnet modes