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5 to 9 pin RS232 Serial Cable for PC Connection - HI920011
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Amazon.com: YIOVVOM Connector DB9 RS232 D-SUB Male Serial Adapter 9-pin Port Adapter to Terminal Connector Signal Module with case(Male Connector, DB9 5+5 with case A) : Electronics
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RS-232 DB9 to Phoenix Adapter Cable - 1.35 m | Black Box
USB-A to Serial Adapter Cable - RS232, DB9, 5-ft. | Eaton
3' USB to RS232 DB9 Serial Adapter Cable - Serial Cards & Adapters | StarTech.com Finland
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31055: CPI/RS-232 Data Cable, RJ45 to DB9 Pin (Male)
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D-SUB DB9/DB15R3 RS232 Connector Housing - for D-SUB Socket or Plug | Cables, Plugs, Adapters, Converters \ D-SUB