Features: Brand new and high quality The STM32F401 Development Board can provide a platform for beginners, in practical applications, it will not be because of insufficient computing power, I0 port function is not comprehensive and hinders development. High-quality material, durable, ultra-fine production process, fine parts, no need to worry about the service life. STM32F401CCU6 core board 64KB RAM 256KB ROM. The GND is changed to 5V B9 5V GND, which can directly connect a small steering gear without additional wiring and reduce development time. 25MHZ high speed crystal oscillator 32.768k low speed crystal oscillator. Specifications: Material: Electronic components Size: approx.5.6x2.2cm Color: Green Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Development Board