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CableCreation USB to Serial 10ft Long Cable , USB to RS232 Adapter, USB to DB9, RS232 Converter 9-Pin FTDI Chipset for Windows , Mac OS and Linux - Walmart.com
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Amazon.com: WWZMDiB USB to RS485 RS232 Converter The Product can Support USB to RS232 and USB to RS485, but The Two Functions Cannot be Used at The Same time : Electronics
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