Item Type: CPU Cooling Fan Product Material: Plastic + Brass Function: Heat Dissipation Rated Power: 0.4W Current: 0.08A Package List: 1 x CPU Cooling Fan 4 x Nut 6 x Screw 8 x Standoff 2 x Buckle 4 x Washer 1 x Plastic Plate 1. During the use of the cooling fan, please do not touch the blades and the power cord around the fan or pull the power cord, which will damage the shaft and the power cord. 2. When using the cooling fan, please avoid the entry of dust, water droplets, and small insects, which will affect the service life and cause malfunctions. 3. Do not use the cooling fan in flammable gas or any harmful environment to prevent explosion or damage. 4. Please use the cooling fan within six months after purchasing. Long-term storage will affect the performance of the fan due to the storage environment. 5. When the cooling fan is in operation, please do not attempt to lock the fan for a long period of time. This will cause the fan to be burned out due to continuous stoppage and high heat generation. 6. When installing the cooling fan, please pay special attention to the noise caused by resonance or vibration. 7. During transportation or operation, if the cooling fan falls from a height of 60cm, it will have a certain impact on the balance of the blades, especially the ball bearings; avoid dropping. 8. The screw torsion should not exceed 4Kgf when the shell of the cooling fan is locked; please do not use screwdrivers, iron rods, etc. to block the fan, as this will damage the fan. 9. Please be careful not to put your fingers in the cooling fan when it is running at high speed to prevent injury. This CPU cooling fan is compatible with Raspberry Pi 3 and Raspberry Pi 4. It can reduce the temperature of the Raspberry Pi from 80C to 40C under overclocking conditions. Features a 35mm brass tube, multilayer radiator, and 7-blade powerful fan blades for faster heat dissipation. An RGB cooling fan that efficiently dissipates heat while enhancing the appearance of your device. Easy to install with compact size and light weight; 0.4W rated power helps conserve energy.