Features: All aluminum heat dissipation fins and transparentPC fan material it has high heat dissipation efficiency, safety and environmental protections, good heat resistance, and durability. Quiet cooling fan, oil bearing, smooth operation, you don't need to worry about noise. Equipped with a heat sink, keep your OrangePi 5Plus mainboard as cool as possible for optimalperformances. The cooling fan operates smoothly and quietly, which is beneficial for the heat dissipation of raspberry pie. It can be installed through interfaces and buckles. Only for OrangePi 5Plus Specifications: Material: Aluminum Size：approx 45x49x18mm/1.77x1.93x0.71in Only for OrangePi 5Plus Quantity：1PC Heatsink with fan Package Includes: 1PC Heatsink note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you. Please allow slightly measuring deviationdue to manual measurement.