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Amazon.com: KENTEK DB25 4 Way Manual Data Switch Box RS-232 Parallel Serial D-Sub 25 Pin Female I/O ABCD Port for PC MAC to Peripherals Devices Printer Modem : Electronics
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4 Port Rs-232c Db9 9-pin Manual Switch For Pc Rs232 Serial Port Switch Sharing Splitter Device Steel Case - Kvm Switches - AliExpress
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4 Port Rs-232c Db9 9-pin Manual Switch For Pc Rs232 Serial Port Switch Sharing Splitter Device Steel Case - Kvm Switches - AliExpress
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