The Lind Auto/Air AC adapter will power your laptop from an AC wall outlet, automobile cigarette lighter socket, or airline seat power plug. This adapter is designed to meet the power specifications of your computer. In addition, the adapter has a USB port that can be used to charge devices such as cell phones, PDAs, digital cameras and more. - Provides protection against over-voltage, over-temperature, over-current, and short circuits. - Powers electronic devices from a standard auto cigarette lighter, airline seat, or AC wall outlet. - The USB port can charge additional devices using a USB cable (cable not included)