How to Use: Remove the old damaged parts and replace with a new heat sink before use. Specification: Item Type: CPU Cooler Material: ABS+Brass+Aluminum Rated Voltage: 12VDC Starting Voltage: 7VDC Input Power: 3W Rated Current: 0.25A±10% Noise: 18dB Speed: 2000RPM±10% Fan Port: 4-PIN Fan Size: Approx. 80 x 80 x 25mm / 3.1 x 3.1 x 0.9in Applicable Platform: All Platforms Package List: 1 x CPU Cooler 1 x Base 1 x Silicone Grease 8 x Fixing Screws