USB-A to Serial Adapter Cable - RS232, DB9, 5-ft. | Eaton
Amazon.com: CableCreation USB to RS232 Serial Adapter (FTDI Chip), 6.6 Feet USB to DB9 Female Converter Cable for Windows 10, 8.1, 8, 7, Vista, XP, Linux and Mac OS X, macOS, 2 Meters/Black : Electronics
usb rs232 converter – Heureka.sk
USB to RS232 Converter - 6ft - CAB-11304 - SparkFun Electronics