All STM32 models are supported Support dragging and burning of USB flash disk SWD debugging interface+built-in virtual serial port Firmware can be permanently upgraded 3.3V and 5V output With reset button, reset the target board Type-C interface, free forward and reverse insertion Ultra-small size: 30x45x10mm Technology sense protection panel Colour:As Shown Material:Plastic Package Contents: 1 * STLINK-V2.1 Simulator Debugging 1 * Cable (The color is random, and the designation is not accepted) 1 * Line 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.