The Promate AirBase-3 sleek, rustic design that complements your laptop perfectly, while its extra-large, extra-quiet fan is the perfect way to keep your laptop cool while you work. The AirBase-3 cooling pad consists of two USB Ports. One port conveniently powers the pad with no requirement for a power adapter, while the latter can be used to connect phones, hard drives, keyboards and other USB devices. In keeping with the eco-friendly mission of the Promate AirBase-3 AirBase-3 features 4 high-speed fans that generate cool air to keep the laptop running efficiently and prevent overheating. The rubber grips on the surface of the AirBase-3 keep your laptop in place to provide a sturdy workspace.