Mini USB 2.0 to RS-232 DB-9 Serial Adapter w/ 10kV Surge Protection & 3ft. USB Extension Cable
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Amazon.com: USB to RS232 Adapter (FTDI Chipset), CableCreation 3 Feet RS-232 Male DB9 Serial Converter Cable for Windows 10, 8.1, 8,7, Vista, XP, 2000, Linux, Mac OS X 10.6 and Above,1M / Black : Electronics
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StarTech.com USB to RS232 DB9 Serial Adapter with Detachable 6ft USB Cable - ICUSB232D - -