Key Features: 1) Slim and smart design of the cooling pad system with large, high-performance and extra quiet 3 Fans built-in which absolutely helps to dissipate the heat-air away from underneath the notebook computer for cooling down the overall temperature of your system 2) Extremely heavy-duty construction of the cooling pad to afford any weight or pressure put-on 3) Power source supported easily by the plug-and-play USB connection as a self-power mode 4) Convenient reliable and comfortable to carry 5) No need for any installation 6) Compatible with any notebook computers Specification Material:Aluminum+ABS Air Flow: 28CFM Speed: 1500rpm Noise Level: 25dBA Rated Voltage: DC 5V Power Consumption: <0.9W Rated Current: <180mA Fan:60*60*10mm(L*w*H) M.T.B.F.: 20000Hours Dimension:300x 230 x 13.8mm(L*w*H)