USB to RS232 - USB232 - Fixed Length USB Cable – Grid Connect
Mettler Toledo RS232 to USB Converter Cable for XPR Microbalances and Ultra-Microbalances | Fisher Scientific
USB-C 2.0 to Serial RS-232 Adapter w/ LED Indicators
Meade USB to RS-232 Serial Adapter
3ft USB to Serial Cable/RS232 Adapter - Serial Cards & Adapters | Add-on Cards & Peripherals | StarTech.com
USB to RS232 DB9 Serial Adapter Cable - Serial Cards & Adapters | Add-on Cards & Peripherals | StarTech.com Switzerland
USB 2.0 RS-232 Serial Adapter with LED Indicators
Amazon.com: CableCreation USB to RS232 Adapter with PL2303 Chipset, 6.6ft USB 2.0 Male to RS232 Female DB9 Serial Converter Cable for Cashier Register, Modem, Scanner, Digital Cameras, CNC,Black : Electronics
MOD-USB-RS232 - Open Source Hardware Board
USB-RS232-WE-1800-BT_0.0 - Ftdi - Cable, USB A to RS232, Serial Convertor
USB to RS232 Adapters (FULL SPEED) — Connective Peripherals - Global Store
PRO Single Port USB to Serial Adapter with Activity LED 3ft.
USB/Serial Converter [FT232RL] : ID 18 : Adafruit Industries, Unique & fun DIY electronics and kits
USB to RS232 Adapter / Converter – CommFront
USB to Serial adapter for the FLEX-6000 series – FlexRadio
Amazon.com: Plugable USB to Serial Adapter Compatible with Windows, Mac, Linux (RS-232/DB9 DTE Male Connector, Prolific PL2303HX Rev. D Chipset) : Electronics
6ft. USB 2.0 to RS-232 DB-9 Serial Adapter w/ 15kV ESD Protection & FTDI Chipset - Coolgear