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Insignia™ 1.3' USB-to-RS-232 (DB9) PDA/Serial Adapter Cable, with Prolific Chipset Black NS-PU99501 - Best Buy
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CableCreation USB to Serial Cable 3ft, 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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StarTech.com USB C to Serial Adapter Cable 16" (40cm), USB Type C to RS232 (DB9) Converter Cable, USB-C Serial Cable for PLCs, Scanners, Receipt Printers, Male/Male, Windows/macOS/Linux | www.shi.com
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