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 - Extremely heavy-duty construction of the cooling pad to afford any weight or pressure put-on - Power source supported easily by the plug-and-play USB connection as a self-power mode - Convenient reliable and comfortable to carry - No need for any installation - Compatible with any noteboo - Rated Voltage: DC 5V