About STLINK V2.1:STLINK V2.1 is a peripheral based on STM32F103CBT6 microcontroller, which is used for debugging and programming with STM32 series microcontrollers. It supports a SWD debugging interface and connects to a computer via USB. STLINK V2.1 can be integrated with many debugging environments, such as Keil, IAR, STM32CubeIDE, etc. It also supports OpenOCD and can use GDB for -line debugging. STLINK V2.1 has good reliability and stability. It also has many useful features, such as debugging combined with firmware upgrade capabilities. In addition, STLINK V2.1supports password protection, read/write protection, and hardware interface locking. MiniDebugger:The STLink Version is V2.1, Chip is STM32F103CBT6. All in all, STLINK V2.1 is a powerful debugging and programming tool for STM32 that makes the development of embedded applications much simpler and easier.