2 sided innovative design cooling pad system with 2 build-in extra quiet and high performance fans speed in 3200rpm which absolutely helps to dissipate the heat air away from the notebook underneath instantly to cooling down the overall. With special refinement construction, the cooling pad can bear any weight of notebook withour affecting the notebook performance. Collapsible and light weight that convenient, reliable and carry easily. Power source supported by the plug-and-play USB connection as a self-power mode. Suitable for all size of notebook between 8.9"W to 15.4"W. Rated voltage: DC 5V.