Features: 1. Double cooling fans, more powerful heat dissipation performance. 2. Smooth and straight aluminum material, ultra-thin design, fast heat dissipation, and easy installation. 3. All ports and slots in the case match with the for Raspberry Pi 4 Model B perfectly. 4. Low power consumption design and equipped with quiet cooling fan, getting rid of the noise from the fan. 5. All the products have been tested by our engineers and are of good quality. 6. It can ensure optimal heat conduction to replace the cooling fins. 7. Open case design, and you don't need to worry about affecting wifi signals. 8. Adopt reinforced aluminum material, lightweight and durable. Specification: Color: Black Fan: Double fans Noise: 18dB Material: Aluminum alloy Package List: 1 x Case 1 x Screw Kit 1 x Hex Wrench 3 x Cooling Fins 1、Double cooling fans, more powerful heat dissipation performance. 2、Smooth and straight aluminum material, ultra-thin design, fast heat dissipation, and easy installation. 3、All ports and slots in the case match with the for Raspberry Pi 4 Model B perfectly. 4、Low power consumption design and equipped with quiet cooling fan, getting rid of the noise from the fan. 5、All the products have been tested by our engineers and are of good quality.