ITEM NAME:for Raspberry Pi 4 4B Aluminum Case Enclosure CNC Cover with Heatsink Cooli D3G5 for Raspberry Pi 4 4B Aluminum Case Enclosure CNC Cover with Heatsink Cooli D3G5 Made of aluminum with good thermal conductivity. Stripe design and cooling fan allows for more efficient heat dissipation in less time. Updated manufacturing process with improved CNC aluminium alloy quality. Not easy to rust. Silence without noise with great cooling performance, it can drop temp up to 30-37 degree. All ports and slots of the case can match with for Raspberry Pi 4 Model B perfectly. Comes with dual quiet cooling fan, built-in heatsink and thermal tape, which makes your Pi cooler than others. ?Used for Raspberry Pi 4 Model B Module. The armor shell is made of aluminum alloy with CNC machining manufacturing technology. Its cool and attractive design are appreciated by the manufacturers. Including dual fan and thermal tapes that reduce the temperature for the Raspberry Pi plate. For dual fan and heat sink: Design of low energy consumption. Dual cooling experience, no more overheating problems. Very quiet cooling fan, you won't be bother by the noise. CNC aluminum alloy housing can protect your Pi safe. Radiation protection and difficult to rust. Open design can make sure that our CNC casing does not affect the Wifi signal. Material:Aluminum alloy colour:Silver Package Contents: 1 * Aluminum alloy Case 1 * Assembly screw 1 * Screwdriver 1 * Fan.Used for Raspberry Pi 4 Model B Module. All ports and slots of the case can match with for Raspberry Pi 4 Model B perfectly. Including dual fan and thermal tapes that reduce the temperature for the Raspberry Pi plate.