Welcome to our store! 1. For CH343G Chip: The serial communication module uses CH343G chip, which supports higher communication speed than CH340G, up to 6 Mbps; supports more serial port levels: 5/3.3V, 2.5V, 1.8V. 2. Application Area: The serial communication module supports OS X, Linux, Android, Win 7, Win 8, Win 8.1, Win 10, Win 11. 3. Overvoltage Protection: The USB to UART TTL adapter has built-in resettable fuse and TVS diode, built-in 1o protection circuit, anti-overvoltage, and anti-static. 4. Convenient and Practical: The USB to UART TTL adapter has built-in TTL serial port 3.3V and 5V level conversion pins, which can switch TTL communication levels. 5. 3.3V/5V Output: Supports 3.3V/5V output, the module is driven by USB, the bygel must be bridged to 3.3V/5V. Uses double-sided black immersion gold process. Product Type: USB to UART TTL Adapter Material: PCB Host Interface: USB Device Interface: UART Communication Range: 50bps - 6mbps USB Interface: Interface Form: Type C Interface Protection: Resettable Fuse, ESD Electrostatic Protection UART Interface: Interface Form: 6PN Bowed Pin Interface Interface Protection: 10 Protection Diode Circuit Package includes: 1 x USB to UART TTL Adapter, 1 x Cable If you find any product problems after receiving the goods, such as damage or incorrect quantity, please contact us immediately. We will do our best to provide you with satisfactory customer service.