Package include: 2 x STM32F103C8T6 STM32F103C8T6 ARM STM32 minimum system development module. Package include: 2pcs STM32F103C6T6 minimum system board, 1pcs ST-Link V2 programming unit emulator downloader. ST-Link V2 support the full range of STM32 SWD interface debugging, simple interface (including power supply), 4 line speed, stable work. Use the current smart phones of Mirco USB interface, easy to use, USB communication and power supply can be done. The board lead to all the I/O resources.Download with SWD debug interface, which requires a minimum of 3 wires to complete debug a download task