1、A aluminum alloy metal case with fan, suitable for Raspberry Pi 4 Model B only. 2、All ports and slots of the case can match with for Raspberry Pi4, including USB-C power supply, Micro HDMI port, GPIO Cale interface. 3、Super cooling system: with cooling fan and cooling hole, hardly to weaken WLAN or Bluetooth signal. 4、It can be installed on the wall, easy to use, sturdy and durable. 5、Adopting high specification craft and high quality aluminum alloy material. Features: 1. A aluminum alloy metal case with fan, suitable for Raspberry Pi 4 Model B only. 2. All ports and slots of the case can match with for Raspberry Pi4, including USB-C power supply, Micro HDMI port, GPIO Cale interface. 3. Super cooling system: with cooling fan and cooling hole, hardly to weaken WLAN or Bluetooth signal. 4. It can be installed on the wall, easy to use, sturdy and durable. 5. Adopting high specification craft and high quality aluminum alloy material. Specification: Material: Aluminum alloy Color: Black Application: For Raspberry Pi 4 Model B only Package List: 1 x Case 1 x Fan 1 x Screw Kit 1 x Silicone Pad