Description: No wind resistance design: using the exhaust type + high-speed high-power for turbo cooling fan, the effective cooling can reach about 40 degrees, say goodbye to high heat/crash/stutter, and play games freely. Intelligent temperature control: Active ventilation and heat dissipation. Built-in temperature control chip, intelligent temperature control, active cooling and fast cooling, solving the problem of heat dissipation required for notebook overload for operation. (5V Constant Temperature optional) Low-grade design: It adopts a silent fan, the decibel value is about 23 decibels, and the high-speed for operation is silent. 4-speed wind adjustment: button to adjust the speed, and the air volume is controllable. Compatible with a variety of sizes: three air guide sleeves to adapt to different sizes of notebook cooling. Specification: Fan Speed: 1500-3200RPM Input power: 1.75W Input voltage: 12V Decibel value: about 23dB Maximum air volume: 75.35CFM (4-speed wind adjustable) Cooling up to: 40 Celsius Turbofan life: more than 50000 hours Product size: 83x168mm Package Includes: 1 Piece Cooling Fan 1 Piece USB Cable Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!