1. Slim and smart design of the cooling pad system with large. 2. High-performance and extra quiet 2 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. 3. Extremely heavy-duty construction of the cooling pad to afford any weight or pressure put-on. 4. Power souce supported easily by the plug-and-play USB connection as a self-power mode; Convenient, reliable and comfortable to carry. 5. No need for any installation; Compatible with any notebook computers. Specification Material: Acrylic Air Flow: 28CFM Speed: 2800rpm Noise Level: 25dBA Rated Voltage: DC 5V Fan: 60*60*15mm(L*w*H) Dimension: 290*242*40mm(L*w*H)