StarTech.com USB to Serial Adapter - 2 Port - COM Port Retention - FTDI - USB to RS232 Adapter Cable - USB to Serial Converter | OfficeSupply.com
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StarTech.com 1 Port FTDI USB to Serial 232 Adapter Cable COM Retention - ICUSB2321F - Serial Cables - CDW.com
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StarTech.com USB to Serial Adapter - 3 ft / 1m - with DB9 to DB25 Pin Adapter - Prolific PL-2303 - USB to RS232 Adapter Cable - Add an RS232 serial port
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Amazon.com: Cable Matters USB to Serial Adapter Cable (USB to RS232, USB to DB9) 3 Feet : Electronics
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