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USB To RS485/RS422 FTDI Serial Adapter, 30-in. | Eaton
StarTech 1-Port USB to RS-422/RS-485 Serial Adapter ICUSB422IS
USB to RS485 | RS422 Optically Isolated Industrial Serial Adapter
Serial Adapter (RS232 to RS485) - Micro Connectors, Inc.
RS-232 RS232 serial to RS485/RS422 485/422 Converter | eBay