Features: Active Cooler combines a large metal radiator withhighquality variable speed blower fan, powered and controlled by a fan connector for RaspberryPi5, and connected to the boardthrough a spring pin in a dedicated mounting hole. When the heat from the Pi5 CPUdiffuses onto the radiator body and fins, the blower pushes cold air onto the fins, allowing for RaspberryPi5 to operate at the optimal hot water level. The fan is controlled by software, allowing it to remain turnedoff (and therefore remainsilent) until the temperature reaches the specified threshold. Installation holes for large metal radiators combined withhigh-quality blowers Heatsink accessories for RaspberryPi5 fan connector Specifications: Material: Metal Size：as pictures for RaspberryPi5 Quantity：1PC Heatsink with fan Package Includes: 1PC Active Cooler Heatink 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.