AirBase-1 features two fans that generate cool air to keep the laptop running efficiently and prevent overheating. The rubber grips on the surface of the AirBase-1 keep your laptop in place to provide a sturdy workspace. Fan speed can be controlled, to maintain an optimum temperature of your laptop. The device plugs directly into the USB port and no additional power is required Dual USB PortsThe AirBase-1 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. This enables you to use all your devices while keeping your computer at its optimal temperature. Your computer will stay cool while you work, study, or play games. The two-port design ensures user convenience. A USB cable is included in the box so that you may begin using the product immediately.Powered by Your Laptop's USB-A PortIn keeping with the eco-friendly mission of the Promate AirBase-1, it doesn't require any external power source to work, making it a light, space-friendly solution for laptop cooling. Simply plug its USB connector into the USB-A port on your laptop and you'll be ready to go.Powerful and Quiet The AirBase-1 cooling pad features 2 140mm fans designed to prevent your laptop from overheating by pulling in cool air while maintaining a low profile. Blue LED lights indicate that the pad is working so that you may easily detect when the fans are on, especially at night. Rolling the rotary controller adjusts the fan speed. Quiet fans create a noise-free & interference-free environment for you.Adjustable Fan Power with LED IndicationAdjustable fan speed gives you the best balance between silence and performance. Features an adjustable wheel that controls the power of the fans. Set the fan speed to the maximum at the beginning and slow down when the laptop has been cooled down for optimum performance. The LEDs illuminate through the mesh and add to the aesthetics of this product.Ergonomic DesignFrequently used functions are just one touch away. Access volume controls mute, calculator, music, My Computer, video controls, sleep email and more. These shortcuts make work a breeze and help in increasing your speed and efficiency. Full-number keypad makes basic calculations a breeze.