SparkFun USB UART Serial Breakout - CY7C65213 - BOB-13830 - SparkFun Electronics
USB TO UART TTL (Wires) Serial Cable (PL2303HX)
Amazon.com: WITMOTION UART 6-in-1 USB to Serial Converter, Multifunctional ( USB to TTL/RS485/232, TTL-RS232/485, 232-485), Universal Adapter Module with CP2102 Compatible with Windows 7/8/10, Linux, Arduino : Electronics
USB To UART Module w/ High Baud Rate Transmission (Mini) - RobotShop
Addicore CP2102 USB to Serial (UART) Converter Module
WITMOTION USB-UART 6-in-1 USB to Serial Converter, Multifunctional (US – WitMotion