This LED USB Laptop Cooler is designed with 3 built-in fans and it can cool down the overall temperature and extend the life of your notebook. The USB Laptop Cooler is powered directly through USB port, no power adapter necessary. Designed with the clear plastic construction and four leg pads, with 3 built-in fans in the middle of the cooler. SANOXY brand has been awarded trademarks by the United States Patent and Trademark Office. Exclusively marketed by authorized resellers on amazon to ensure product warranty.