The Targus Laptop Chill Mat features two fans that generate cool air to keep the laptop running efficiently and help prevent overheating. The Chill Mat can be also used in the office to protect furniture from heat damage, or on the go to protect your lap from heat. Rubber grips on the surface of the Chill Mat keep your laptop in place to provide a sturdy workspace. The device plugs directly into the USB port and no additional power is required.