Features: 【Self-Recovering Overcurrent Protection】: Automatically disconnects power to prevent damage,quick resuming normal operating after overcurrent event. 【USB Port Support】: Connects via standard USB port, wide compatibility for effortless operating. 【Compact Design】: Compact and lightweight for portability, includes clear wiring diagrams to assist novice users in quick familiarisation. 【High Programming Speed】: Delivers programming rates of several hundred Kilobyte/s, enabling rapid completion of multiple chip programming tasks to enhancing efficiency. 【Extensive Chip Support】: Compatibles various microcontroller models, including the series, to accommodate diverse project development requirements. Specifications: Component: PCB Module size: 64x21.3mm/2.52x0.84in Quantity: 1/3/5pcs It is widely used in the development and debugging of microcontrollers, as well as education training and electronic projects, and can meet the needs of various makers. Package Includes: 1PC Programming downloader module 1PC Download line note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution