Black Box USB TO RS232 OPTO-ISOLATED CONVERTER (SP385A-R3)
Amazon.com: UC232A1 (1m) USB to RS-232 Adaptor Cable | ATEN UK | #1 KVM Market Leader,Black : Electronics
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 to RS232 Adapter/ USB to RS232 Converter
17-101-912, USB to RS232-1 Serial Port Converter
USB-A to Serial Adapter Cable - RS232, DB9, 5-ft. | Eaton
USB to Serial adapter for the FLEX-6000 series – FlexRadio