This provides a fast, simple way to connect devices with an RS422 interface to USB.
USB to RS422 serial interface , USB-RS422-WE-1800-BT,1.8Meter
USB to serial UART interface IC, which handles all the USB signaling and protocols.
Each USB-RS422 contains a small internal electronic circuit board utilizing the FT232R that is encapsulated into the USB connector end of the .