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1PC 5ft F/F Serial RS232 Null Modem Cable Female to Female DB9 FTA Cross Connection 9 Pin COM Data Cable Converter PC Accessory - AliExpress
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StarTech.com USB to Serial Adapter - Null Modem - FTDI USB UART Chip - DB9 (9-pin) - USB to RS232 Adapter - Add a Null Modem RS232 serial port to your laptop
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3ft (0.9m) Serial RS232 DB9 Null Modem Cable with Low Profile Connectors M/F - In-Wall CMG-Rated | Serial RS232 | Computer Cables | USB and PC
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