Amazon.com: CableCreation USB to RS232 Serial Adapter (FTDI Chip), 6.6 Feet USB to DB9 Female Converter Cable for Windows 10, 8.1, 8, 7, Vista, XP, Linux and Mac OS X, macOS, 2 Meters/Black : Electronics
USB to RS232 Converter Cable | Garmin
RS232 to USB converter - Victron Energy
High-Speed USB-to-Serial Adapter for Windows 8 32/64-bit - U.S.Converters
USB to RS232 Converter - CAB-08580 - SparkFun Electronics
USB/Serial Converter [FT232RL] : ID 18 : $17.50 : Adafruit Industries, Unique & fun DIY electronics and kits
3ft USB to Serial Cable/RS232 Adapter - Serial Cards & Adapters | Add-on Cards & Peripherals | StarTech.com
USB to Dual RS232 Adapter / Converter – CommFront
USB to RS232 Converter - 6ft - CAB-11304 - SparkFun Electronics
4 Port Professional RS-232 USB 2.0 to Serial Adapter
Industrial Isolated Multi-Bus Converter, USB / RS232 / RS485 / TTL Communication | Multibus Converter
USB to RS232 Serial Cable + MAX3232 RS232 to TTL Serial Adapter Converter Module | eBay