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
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USB 2.0 to RS-232 / RS-422 / RS-485 Selectable Industrial Serial Adapter w/ 15kV ESD Surge Protection - Coolgear
USB to RS485-RS422 converter with FTDI Chip and USB Cable