The Computer Case Fan is primarily used for cooling computer cases. It helps in maintaining optimal temperatures within the case to prevent overheating of components such as the CPU, GPU, and motherboard. Additionally, it can also be used to improve overall airflow and ventilation within the case, ensuring efficient cooling for all components. Rotating Speed: 600-1200RPM; Side Length: 120mm/4.72"; Wire Length: 480mm/18.9"; Thickness: 25mm/0.98"; Rated Voltage: DC12V; In the package of: 3pcs x Computer Cooling Fan, 4pcs x Screws Double-sided aperture creates better lighting effects for the cooling fan. The fan frame is equipped with anti-shock pad, which has good anti-shock effect and reduces resonance noise. Insert the fan into the mounting location, aligning the screw holes with the corresponding holes on the case. Ensure that you have a 4-pin fan header on your motherboard or a compatible fan controller to connect the fan to.