The TRP-C08H?allows you?to simultaneously connect 2 RS-232 and 2 RS-422/485 serial devices to?system by using a USB interface.?The RS232 interface support all common PC DTE connection type. For RS-422/485 data lines TRP-C08H provides auto-detecting function in data format, baud rate and data direction flow control, it may automatically configure RS-422/485 signals and baud rate without external switch setting. TRP-C08H is equipped with 3000V DC of isolation and internal surge protection to protect the host computer and converter against high voltage spikes, as well as ground potential differences. TRP-C08H?features a high-speed 256KB transmission rate, and supports various O.S. The industry standard DIN rail design enables users a fast and professional?installation.