Features: 【Multi-functional port】Simultaneously supports I2C serialed communication, facilitating connection with diverse devices and sensors. 【Extensive Voltages Compatibility】Operates at both 3.3V and 5V, accommodating various microcontrollers and peripherals. 【Cross-Platform Support】Compatible with multiple operating systems, ensuring seamless operating across multiple environments. 【Fast Speed Data Transfer】Delivers stable and rapid transmission speeds, ideal for high-frequency data exchange requirements. 【Simple Operating】Features a plug-and-play design not requiring complex setup, enabling users to get starts quickly. This USB-to-I2C Microcontroller serialed Port Double Function Emulator/Downloader/Programmer is a powerful development tool. Specifications: [Component]: ABS, PCB, metal [Product size]: 5.5x2cm/2.16x0.79in [Product weight]: 15g [Interfaces type]: USB to I2C serialed port [Voltages output]: 3.3V/5V [Applicable scenarios]: Embedded development Internet of Things Projects Electronic prototyping Package Includes: 1pc USB downloader programmer 1pc Cable 1pc packaging bag note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.