Amazon.com: Cable Matters USB to Serial Adapter Cable (USB to RS232, USB to DB9) 3 Feet : Electronics
Amazon.com : Meade Instruments 07507 USB to RS 232 (Serial) Adapter : Electronics Cable Adapters : Electronics
Amazon.com: GWC Technology AP1103 (AP1100) USB Serial Converter : Electronics
6pin FTDI FT232RL USB to Serial adapter module USB TO TTL RS232 Arduino Cable - - Amazon.com
Amazon.com: LogiLink USB 2.0, RS232, AU0034 : Electronics
USB to RS232 Female COM Port Serial PDA 9 DB9 Pin Cable Adapter Prolific for Win10 Win8 Mac OS X 10.6 USB RS232 COM pl2303: Amazon.de: Computer & Accessories
Amazon.com: Premium USB to Serial Port RS232 Adapter for PC Mac Linux : Electronics
Amazon.com: axGear New USB 2.0 to RS232 COM Port 9 Pin Serial DB25 DB9 Adapter Cable Converter : Electronics