Uses FT232RNL, much more stable than products Supports , Linux, Android, WinCE, 7/8/8.1/10/11.. Supports 3 power supply modes: 5V external power supply; 3.3V external power supply; external power supply (requires 3.3V-5V) With 3 LEDs: TXDLED, RXDLED, POWERLED ther function PINs: reserved pads (provided with pin headers and sockets, can be plugged in or out to connect to the user system; PIN spacing supports insertion of 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 : Support Win7/8/8.1/10/11, , Linux, Android, WinCE and other systems Due to different batches, the printed words on the product will be different, which does not affect 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, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.