Amazon.com : StarTech.com 1 Port USB to Serial RS232 Adapter - Prolific PL-2303 - USB to DB9 Serial Adapter Cable - RS232 Serial Converter (ICUSB232V2) : Electronics
Amazon.com : StarTech.com 1 Port USB to Serial RS232 Adapter - Prolific PL-2303 - USB to DB9 Serial Adapter Cable - RS232 Serial Converter (ICUSB232V2) : Electronics
Dafensoy USB to RS232 Serial Adapter, USB a Male to DB9 Pin Female Serial | Fabricating and Metalworking
StarTech.com USB to Null Modem RS232 DB9 Serial DCE Adapter Cable with FTDI - ICUSB232FTN - Serial Adapters - CDW.com
Serial Data Cable/USB to Serial Adapter Combo – ThunderMax
SEL-C662 USB Serial Cables | Schweitzer Engineering Laboratories
3ft USB to Serial Cable/RS232 Adapter - Serial Cards & Adapters | Add-on Cards & Peripherals | StarTech.com Belgium
USB to RS232 DB9/DB25 Serial Adapter - Serial Cards & Adapters | Add-on Cards & Peripherals | StarTech.com Belgium
RS232 to USB Adapter Cable, 5-ft | Eaton
USB to RS232
Mini USB 2.0 to RS-232 DB-9 Serial Adapter w/ 15kV ESD Protection & 3ft.