Enhanced Protection and Cooling: This Crafted from metal, it not only protects your board but also significantly reduces temperatures and stabilizes temperature increases under load, ensuring optimal performance. Precision Design for Easy Expansion: The metal material and open shell design are precision-engineered to facilitate easy access to ports, enhancing the distribution of hot air. Advanced Heatsink Features:The case incorporates a slotted design to maximize area contact,which is crucial for effective heat dissipation. Quiet Fan Cooling Technology:The included cooling fan operates quietly, ensuring that it does not disturb your work or entertainment. Fit for:for Orang Pi 5 pro Fan Features:DC Brushless for Fan Size40x40mm cooling fan provide well passive cooling Colour:Black Material:Metal Package Contents: 1 x housing 1 x fan 3 x copper heat sink Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.