This is suitable for the Raspberry Pi 4B board, and its interface is different from the 3B+/3B board. The case is made of ABS plastic with a matte texture and features precise craftsmanship. The snap-on design of the top and bottom covers makes it easy to open and close, and all the holes around it correspond to the Raspberry Pi 4B board individually, protecting it without affecting the user's use. Additionally, there are two types of cooling fans available. The black large cooling fan provides powerful airflow for more efficient cooling in a shorter time, while the LED cooling fan includes built-in LED lights, combining aesthetics with cooling functionality.