Buy RS232 Manual Switch Box 4-Port - CNC Specialty Store
Amazon.com: Kentek DB25 2 Way Manual Data Switch Box RS-232 Parallel Serial D-Sub 25 Pin Female I/O AB Port for PC MAC to Peripherals Devices Printer Modem : Electronics
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KENTEK DB25 2 Way Manual Data Switch Box RS-232 Parallel Serial D-Sub 25 Pin Female I/O AB Port for PC MAC to Peripherals Devices Printer Modem - Newegg.com
Kentek DB25 6 Way Manual Data Switch Box RS-232 Parallel Serial D-Sub 25 Pin Female I/O ABCDEF Port for PC MAC to Peripherals Devices Printer Modem - Walmart.com
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