The Targus Chill Hub XC for Laptops is designed to keep your laptop cool and protect your workspace from heat damage while providing 4 USB ports for peripherals. The dual USB powered fans provide unsurpassed cooling and help prevent the laptop from overheating. It also acts as a heat barrier and provides a stable work surface when using your laptop on your lap. The Chill Mat XC features a three level height adjustment designed to provide the user with the optimum comfort and ergonomic tilt.