Amazon.com: Cable Matters USB to Serial Adapter Cable (USB to RS232, USB to DB9) 3 Feet : Electronics
Ftdi Ft232rl Usb To Mini Din 8 Pin Md8 Male Adapter Rs232 Serial Communication Cable For Yamaha Music Sequencer Host Port To Pc - Pc Hardware Cables & Adapters - AliExpress
USB-A to Serial Adapter Cable - RS232, DB9, 5-ft. | Eaton
USB connector/insert with detachable cable USB-micro > USB2.0 A - MyElectronics