HEUS-T-028 is a universal USB to RS-485/422 converter, no external power supply, compatible with USB, RS-422, RS-485 standards, capable of converting single-ended USB signals to balanced differential RS-422 or RS-485 signals, providing per-wire surge protection, and surge voltage generated on the wire is very small. The inter-pole capacitance ensures high speed transmission of RS-485/422 interface, and the RS-422 and RS-485 ports are connected via DB9 male connectors. The converter is equipped with zero-latency automatic transceiver and the unique I/O circuitry automatically controls the data flow direction without any handshaking signals (e.g.RTS, DTR, etc.). All existing communication software and interface hardware is suitable.