Uses FT232RNL, much more stable than other products. Supports various systems: Linux, Android, WinCE, 7/8/8.1/10/11. Features three power supply modes: 5V external power supply; 3.3V external power supply; external power supply (requires 3.3V-5V). Equipped with three LEDs: TXDLED, RXDLED, POWERLED. Other function pins: reserved pads (provided with pin headers and sockets, can be easily connected to the user system; pin spacing supports connection to a universal board). Features: FT232 USB to TTL Interface: UART Power supply voltage: 5V Communication rate: 300bps - 3Mbps Serial port (TTL level): 5V/3.3V Compatible with Win7/8/8.1/10/11, Linux, Android, WinCE and other systems. Please note that different batches may show variations in printed words on the product, which do not affect its use. Colour: Blue Material: PCB Package Contents: 1x Serial Port Module 2x 5Pin pin headers 2x 5Pin row seats 1x Cable Only the above package content is included, other products are not part of the package. Note: Light reflection and different displays may cause the color of the item in the pictures to differ slightly from the actual product. The measurement allowed error is +/- 1-3cm.