Features: Brand new and high quality USB serial port downloader: This product is a USB serial port downloader that can be used together with the for Pi Debug Probe debugger, making it convenient for users to debug and burn operations. UART burners: The product has UART burners function, which can be used to burn programs or firmware to the device through serial port, providing convenient firmware update and debugging option. With 400 hole bread board: The product comes with a 400 hole bread board, providing users with more connection option and experimental space. Simple connection: The product is directly connected to the computer through a USB interfaces, without the need for an additional power cord, making the operation simple and fast. for Pi Developer: Suitable for Pi developers and enthusiasts, it can easily perform debugging, burning, and firmware update operations, accelerating project development progress. Specifications: Material: Package Includes: 1Set Debug Probe note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!