The 240-Watt AC Adapter from Dell™ is specially designed to meet the power needs of your Dell laptop. The adapter enables you to simultaneously operate your system and charge its battery from electrical power outlets. Packed with 240-Watts of power, this lightweight and easy-to-carry plug adapter proves to be an optimized portable power source wherever you are - at home, in office or on the road. This product has been tested and validated on Dell systems. It is supported by Dell Technical Support when used with a Dell system.