The 90-Watt AC Adapter from Dell is specially designed to meet the power needs of select Dell Laptops. The adapter enables you to operate your system or charge the battery from electrical power outlets. This lightweight and easy-to-carry power adapter proves to be an optimized portable power source wherever you are at home, in remote office or on the road. For true simplicity, leave one at your desk and keep another in your carrying case for quick access. In addition, this adapter includes a 2 prong wall plug. This product has been tested and validated on Dell systems and is supported by Dell Technical Support when used with a Dell system.