ES-U-2002

* Adds two RS422 / RS485 ports via USB connection

*  Data rates up to 1 Mbps depending on model

*  Auto transmit buffer control for 2-wire RS485 half-duplex operation

*  Internal termination and bias resistors on some models (enabled by jumper)

*  RS422 data signals : TX-, TX+, RX+, RX-, GND, RTS-, RTS+, CTS+, CTS-

*  RS485 signals (half duplex) : Data+, Data-, GND

*  RS485 signals (full-duplex) : TX-, TX+, RX-, RX+, GND