1. The main chip is CP2102. A virtual serial port is generated after the driver is installed 2. USB power supply, the output ports include 3.3V ( less than 40mA), 5V, GND, TX, RX, the signal pin level is 3.3V, positive logic 3. Onboard status indicator light, transceiver indicator light, the status indicator light be always on after the driver is installed correctly, the transceiver indicator light flash during communication, the higher the baud rate, the lower the brightness 4. Support baud rates from 300bps to 1Mbps 5. Communication format support: 1) 5, 6, 7, 8 data bits; 2) Support 1, 1.5, 2 stop bits; 3) Odd, even, mark, space, none 6. Support operating systems: Vista/XP/Server 2003/200, OS-X/OS-9, Linux 7. The USB is male and can be directly connected to the computer USB port 8. SMT components are produced using and have stable quality Colour:Black & Red Material:Metal Package Contents: 1 * black chip module 1 * red chip module 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.