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Industrial USB TO TTL Converter, Original FT232RL, Multi Protection & Systems Support (WS-17939)
Industrial USB TO 4CH TTL Converter, USB To UART, Multi Protection & Systems Support (WS-21619)
CP2102 USB UART Board micro USB (Waveshare WS-CP2102)
USB-to-UART-MCP200-SMD-SCH - Electronics-Lab.com
Amazon.com: WITMOTION USB-UART 6-in-1 USB to Serial Converter, Multifunctional (USB to TTL/RS485/232, TTL-RS232/485, 232 to 485), Universal Adapter Module with CP2102 Compatible with Windows 7/8/10,Linux, Arduino : Electronics