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STCICUSB232DB25 - StarTech.com USB to Serial Adapter - 3 ft / 1m - with DB9 to DB25 Pin Adapter - Prolific PL-2303 - USB to RS232 Adapter Cable - Add an RS232
StarTech.com USB C to Serial Adapter Cable 16in - USB Type-C to RS232 (DB9) Converter -Win/Mac/Linux - ICUSB232C - Serial Cables - CDW.com
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4-Port USB to RS232 Adapter FTDI Cable - Coolgear
10 Foot DB9 Female / DB25 Male Null Modem Serial Cable RS232
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RS-232C Cable DB9F/F Null • PTGlobal.com
RS232 Null-Modem Cable DB09FF -- DataPro
C2G 5ft USB to DB9 Serial Cable - RS232 Adapter Cable - serial adapter - USB - RS-232 - 26887 - USB Adapters - CDW.com