Protect your Raspberry Pi 4 with this cool aluminum case against overheating, with active cooling using two fans. The casing reduces overall temperature by 10-15 °C, even when it is at full speed! It can be easily installed using the provided screws and hex key. All the ports will still be easily accessible. Also included is a thermal pad to provide thermal contact between the CPU and top case.
Assembling your heatsink case is pretty easy and should only take a couple of minutes. The first, and most important thing is to make sure that your Pi is powered off and unplugged before you fit the case.
Take one of the thermal pads and peel the protective films off both sides of it (there's a white film and an easy-to-miss clear film on the other side. Stick the thermal pad onto your Pi's CPU (the metal square nearest the middle of the PCB).
Sticking the thermal pad to the CPU first is a much better way to position it correctly than trying to stick it to the case. Only use one thermal pad with the Raspberry Pi 4.
Position the top case and then, holding it in place, flip the whole thing over and position the bottom case on the underside of your Pi. Use the four hex bolts and allen key to secure the case.