1. Provide 5V with 3.3V Voltage Output.
2. USB turn UART(Serial data,ISPWay program download,STC / STMMCU Serial Data Communication (50bps ~ 2Mbps, Conventional non configurable baud rate)
3. USB turnI IC / I2C(flashchip,IICDevice operation, brush)
Only do Master.20K,100K,400K,750KMore communication rate adjustable.
4. Haveled Lamp Status display.
5. Function, the switching voltage terminal.