Fangrui Product Details Features: 1. Integrated 2.4ghz Rf Transceiver And Baseband And Link Control 2. 32-bit Barley Risc-v Processor Wch Risc-v4a 3. 512k Bytes Non-volatile Storage Flashrom. 4. 2 Usb Controller And Transceiver Groups 5. 5v Usb Cable Power Supply, Usb Burn-in Program Description: Interface Introduction: 1. Usba Port Female Socket: Can Be Used As Usb Host Interface 2. On-board Power Conversion 3. On-chip Dcdc Converter 4. On-board Antenna 5. Reset Button: Reset Microcontroller Operation 6. Download Button: The Boot Button, Insert The Usb To Download The Program. 7. Blue Led Light: User Can Program And Control By Themselves. 8. Type-c Port: Used To Burn Program. Development Environment: Ide Use-mounriver Download Mounriver_studio, Double-click To Install, You Can Use It After Installation. Download Instructions: Wchisptool Download The Boot Button And Plug In The Usb Cable. Wchisptool Automatically Recognize The Chip Model And Select The Firmware To Download. Note: Different Batches May Have Differences In