USB to 1-Port RS-422, RS-485, RS-530 DB25 Serial Interface Adapter - Sealevel
Tripp Lite USB to RS485/RS422 FTDI Serial Adapter Cable with COM Retention ( USB-A to DB9 M/M), 30 in. - USB / serial - U209-30N-IND - USB Adapters - CDW.com
Industrial Grade USB-RS485 USB-RS422 USB-RS232 Conversion Signal Converter Module USB TO RS232/422/
USB TO RS422 CABLE WITH FT232R CHIPSET — Connective Peripherals - Global Store