USB Adaptor for LED signs. USB 2 Serial to RS-232 DB-9.
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
Huntleigh USB Serial Port Adaptor - Save at Tiger Medical, Inc
Extech USB100 RS-232 to USB Adaptor | ValueTesters.com
Product A-8014-0670, Serial USB adaptor kit
USB to Serial Adaptor, USB A Male / DB9 Male w/Hexnuts (Single Piece), 3 ft (Prolific 2303 chipset) - Compatible Cable Inc
1.5ft (0.46m) USB to DB9 Serial RS232 Adapter Cable | Adapters and Couplers | Audio Video
USB to RS232 DB9 Serial Adapter Cable - Serial Cards & Adapters | StarTech.com
USB to Serial Adapter Cable
USB RS-232 Serial Adapter USB Serial Adaptor Converter Prolific Chip
USB-A to Serial Adapter Cable - RS232, DB9, 5-ft. | Eaton
Keyspan RS232 to USB-A Adapter, DB9, 3-ft Cable | Eaton
Tripp Lite Keyspan High Speed USB to Serial Adapter - serial adapter - USB - RS-232 - USA-19HS - USB Adapters - CDW.com
USB to Serial Adapter w/ Detachable USB - Serial Cards & Adapters | StarTech.com
NeedsWings Performance Products. Zeitronix USB to Serial Adaptor Cable
Moxa UPort 1110: 1 Port USB-to-Serial Adaptor, RS-232
USB to Serial RS232 DB9 Adapter FTDI Chipset w/ 15kV ESD Protection, Windows 11 Support
Megger 1001-653 - RS232 Adaptor - USB/Serial USB | TEquipment
RS232 to USB Adaptor Cable for Self-Contained Datalogger – Sper Scientific Direct
Prolific PL-2303HXD USB to RS-232 Serial Adaptor Compatible Windows 10 8 7 Vista | eBay