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Amazon.com: Tripp Lite Keyspan High-Speed 4-Port RS232 Serial DB9 to USB Adapter Hub(USA-49WG) : Electronics
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Amazon.com: Tripp Lite Keyspan High Speed USB-C to Serial Adapter DB9 RS232 Cable, 3 Feet / 0.91 Meters, Windows Server & MacOS Compatible, 3-Year Warranty (USA-19HS-C) : Electronics
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FTDI USB to Serial Adapter Cable w/ COM - Serial Cards & Adapters | Add-on Cards & Peripherals | StarTech.com
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