COM UART Extension Functionality: Expand your computer with a serial port via USB to access Arduino, Raspberry Pi, routers, and many other devices that use TTL serial communication. Performance: Delivers fast serial connections with baud rates up to 2 Mbit/s for quick data transfer and responsive control. Arduino programming: Ideal for programming Arduino boards that do not include a USB port, such as the Arduino Pro Mini. Voltage options: Provides selectable output voltage with two levels, suitable for both 3.3 V and 5 V devices. Compatibility: Works with Arduino, Raspberry Pi, routers, and other TTL serial devices, enabling broad interoperability. Use scenarios: Program microcontroller boards without USB ports (eg, Arduino Pro Mini) via USBtoUART connection. Access the serial console of routers or network equipment for configuration and troubleshooting. Establish serial communication with Raspberry Pi or other 3.3 V/5 V devices for data transfer and debugging.