SBC-TTL USB-TTL interface based on the widely used CH340G
Amazon.com: GAGALOR 1 Meter USB to TTL Serial Port Cable RS232 0.1 Inch 4 Pin Female 3.3V Converter : Electronics
CP2102 USB 2.0 to TTL UART Module 6Pin Serial Converter STC Replace FT232 Adapter Module 3.3V/5V Power - ASK Electronics
TTL-232R-5V - FTDI
Amazon.com: DTech USB to TTL Serial Adapter 3.3V Debug Cable TX RX Signal 4 Pin Female Socket PL2303 Prolific Chip Windows 10 8 7 XP Vista (3ft, Black) : Electronics
Amazon.com: USB to TTL Serial 3.3V UART Converter Cable with FTDI Chip Terminated by 6 Way Header, Works with Galileo Gen2 Boards/BeagleBone Black/Minnowboard Max and More : Electronics
AI-Thinker USB to Serial Port CP2102 2.4G 433M USB to TTL Communication Module USB-T1 Adapter Board
CH340/CP2102 Chip USB to TTL Serial Converter Adapter – Oz Robotics
CH340G CH340 USB TTL Serial Adapter UART FTDI Router Upgrade ESP8266 Arduino | eBay
USB to TTL / USB-TTL /PL2303 USB To RS232 TTL Converter Adapter Module For Arduino CAR Detection GPS