StarTech.com 1 PortftDI USB to Serial RS232 Adapter Cable with COM Retention USB to Serial USB to RS232 USB to DB9 USB to serial Adapter USB to serial port - Office Depot
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Cable Matters USB to Serial Adapter Cable (USB to RS232 / USB to DB9) 3 Feet - Walmart.com
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Amazon.com: StarTech.com 3ft USB to RS232 DB9 Serial Adapter Cable - Up to 1 Mbps USB to Serial Converter - M/M USB to VGA Adapter (ICUSB232SM3) , Black : Electronics