Features: Fast Speed USB to transistor Conversion: Features CH340N chip for fast Type C USB to transistor serials conversion with wide communication, wide compatibility for easy driver installation. Reversible Type C Interfaces: Equipped with a Type C female port for easy plugging, supporting 5V power supply and data transfer when used with a data enable Type C cable. Clear Indicators: Built in LED lights show power and data transmission activity for quick troubleshooting and real time monitoring. Versatile Application Scenarios: Ideal for microcontroller programming, router/STB firmware flashing, serials debugging, and data collection, compatibles 3.3V/5V devices. Compact & Durability Design: Measures just 25x14mm with labeled pins， for anti interferences stability in embedded and industrial applications. Specifications: Component： ABS. Dimensions: 25x14mm/0.98x0.55in Weight: 5gram. Usage scenarios: 1. Microcontroller development and programming: used for program downloading and serials port debugging of microcontroller, 51, and other microcontrollers 2. Router/Set-Top Box Flashes Upgrade Package Includes: 1/5/10PCS USB to transistor module note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution