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USB to RS485 Isolated adapter / converter
FTDI Chip USB to RS-485/422 Industrial Isolated w/ DB-9/RJ45/Terminal Screw
1 Port USB to Serial RS422/485 Adapter - Serial Cards & Adapters | StarTech.com
USB to Isolated RS485 / RS422 Adapter - Uvitron
USB to Optical Adapter Industrial Isolated RS-232/422/485 - Coolgear
Amazon.com: Black Box USB to RS422/485 Converter with Opto-Isolation : Electronics
USB to Optical Adapter Industrial Isolated RS-232/422/485 - Coolgear
Amazon.com: Advantech BB-USOPTL4 Isolated High Retention USB to 1 Port RS- 422/485 Converter, 0.9m USB Cable Included, 460.8 kbps Data Rate, Powered from USB Bus : Electronics
4 Port USB to Quad RS-422 485 Optically Isolated Adapter - Coolgear
Amazon.com: BUELEC Industrial High Speed USB to RS232/RS485/RS422/TTL 4 in 1 Converter,Magnetic Isolated,Built-in 3000V Dual Isolation Power Module,Two-Way Independent Data Transmission,FT4232 Chipset : Electronics
USB to RS-422 - RS-485 Serial Surge and Optical Isolation converter | Cooldrives
2-Port Industrial USB 2.0 to RS-422 / 485 Optical Isolated Adapter - Coolgear
USB to RS-422/485 Converter w/ DB9 Male Surge Protection
BB-USO9ML4 - ULI-341DC - USB to RS-422/485 (DB9 Male) Isolated Converter - Advantech