1、The cooling enclosure is suitable for Raspberry Pi 4 Model B, fully protects the motherboard. 2、The shell is of upper and lower split structure, and is equipped with fasteners for easy installation and disassembly. 3、The shell has reserved interfaces, and the side slot can be installed with cables, which does not affect the WiFi signal. 4、The aluminum alloy shell is light and corrosion resistant, and will not wear or deform after long term use. 5、With many evenly distributed small holes, the heat dissipation area is large and more efficient. 1 x Shell Upper Cover1 x Shell Base2 x Baffle13 x Screws4 x Nuts1 x Fan1 x Screwdriver Item Type: Aluminum Alloy Cooling CaseMaterial: Aluminum alloyApplication: For Raspberry Pi 4 Model B