The STM32F401RET6 is a Nucleo development board with Microcontroller Unit provides an affordable and flexible way for users to try out new ideas and build prototypes with any microcontroller line, choosing from the various combinations of performance, power consumption and features. The Arduino? connectivity support and ST Morpho headers make it easy to expand the functionality of the Nucleo open development platform with a wide choice of specialized shields. It does not require any separate probe as it integrates the ST-LINK/V2-1 debugger and programmer.