Tripp Lite Keyspan High Speed USB to Serial Adapter - serial adapter - USB - RS-232 - USA-19HS - USB Adapters - CDW.com
USB to TTL 3.3V Converter – CommFront
USB-RS232-WE-1800-BT_0.0 - FTDI
RS232 to USB converter - Victron Energy
USB-232-K Isolated USB to RS232 Converter ($67.00) : Saelig Online Store
USB Serial Adapter – Windows 10 Compatible High-Speed RS232 adapter
Mini USB 2.0 to RS-232 DB-9 Serial Adapter w/ 15kV ESD Protection & 3ft. USB Extension Cable
USB-RS232-PCBA FTDI | Mouser
StarTech USB to RS232 DB9/DB25 Male to Male Serial ICUSB232DB25
Amazon.com: StarTech.com USB to Serial RS232 Adapter - DB9 Serial DCE Adapter Cable with FTDI – Null Modem - USB 1.1 / 2.0 – Bus-Powered (ICUSB232FTN) : Electronics
USB to RS-232 2-Port DB9 Serial Adapter/Converter Multi-2/USB RS232 – Envistia Mall
1 Port USB to RS232 DB9 Serial Adapter - Serial Cards & Adapters | StarTech.com
USB to RS-232 Adapter (35cm) - UC232A, ATEN Converters | ATEN Corporate Headquarters
Plugable USB to RS-232 DB9 Serial Adapter (Prolific PL2303HX Chipset) – Plugable Technologies
USB to RS232 Converter - 6ft - CAB-11304 - SparkFun Electronics
USB To RS232 D SUB DB 9Pin SERIAL Port Connecting Cable Adapter w/ driver 1m 100cm USB 2.0 To RS 232|usb to rs232|usb tousb 2.0 - AliExpress