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USB to RS422 / RS485 Serial Port Converter | ElectroPeak
USB to RS-422 - RS-485 Serial Surge and Optical Isolation converter | Cooldrives
USB to RS422 Converter / Adapter
USB to RS422/485/530 Converter, DB25, 1-Port | Black Box
USB To RS485/RS422 FTDI Serial Adapter, 30-in. | Tripp Lite