Serial Extension Cable, DB9 Male to DB9 Female, RS-232, UL rated, 9 Conductor, 1:1, 1 foot, 1 Count - Ralphs
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New product DB9 serial cable RS232 motherboard COM port extension cable male to female to male and female - AliExpress
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6ft (1.8m) DB9 M/F Serial RS232 Extension Cable - Black | Serial RS232 | Computer Cables | USB and PC
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