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: Press 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 Press The Boot Button And Plug In The Usb Cable. Wchisptool Will Automatically Recognize The Chip Model And Select The Firmware To Download. Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use size: about 45 x 33mm Material: PCB colour: dark blue Package Contents: 1 x CH582M Development Board Module 2 x 10P Double Row Pins 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.