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USB to Optical Adapter Industrial Isolated RS-232/422/485 - Coolgear
RS-232 to RS-485 Converter – Microflex
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Remote I/O, ADAM-4561, USB to RS-232/422/485 Converter
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3 in 1 USB to RS485 USB to RS232 RS232 to RS485 Converter Adapter w/ Indicator | eBay
ADAM-4561-CE - Advantech - Converter, Isolated USB to Serial, Multimode
Opto-Isolated USB to RS232 / RS485 / RS422 Converter (Industrial / Por – CommFront
USB to DB9-232/485 Serial to USB Converter Cable – Alicat Scientific
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StarTech.com 2-Port USB to RS232 RS422 RS485 Serial Adapter with (ICUSB2324852)
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Isolated converter - USB-CON - Tense Electronic - RS-232 / RS-485 / USB
