Welcome to the store! 1. Full aluminum alloy body: The surface easily forms a dense and robust protective film to shield the substrate from corrosion. 2. Black case with dual metal cooling fans for Raspberry Pi 3 B / RPI 3 B/B + Type. 3. Open shell design: You don't need to worry about it affecting the Wi-Fi signal anymore. 4. Reinforced aluminum material: Lightweight and durable, with strong wear resistance, not prone to rust. 5. Shell with cooling fan and built-in heat column: Achieves more efficient heat dissipation. Item Type: Aluminum Alloy Shell Material: Aluminum Alloy Color: Black Compatible: For Raspberry Pi 3 Model B+/ Raspberry Pi 3 Model B Features: Passive cooling architecture designed for perfect heat dissipation. 1 x Upper Shell 1 x Lower Shell 1 x Fan 1 x Screw Package Your satisfaction is our top priority. We will provide you with the best service. If you find any issues after receiving the product, such as damage or incorrect quantity, please contact us immediately, and we will provide you with the best solution!