Amazon.com: Cable Matters USB to Serial Adapter Cable (USB to RS232, USB to DB9) 3 Feet : Electronics
StarTech.com USB to Serial RS232 Adapter Cable with COM Retention 1' - ICUSB232PRO - USB Adapters - CDW.com
Tripp Lite RS232 to USB Adapter Cable with COM Retention (USB-A to DB9 M/M), FTDI, 5 ft. - USB / serial cable - USB to - U209-005-COM - USB Cables - CDW.com
USB-RS232-WE-1800-BT_0.0 - Ftdi - Cable, USB A to RS232, Serial Convertor