I like to have at least three AC adapters for my notebook PC -- one I keep at work, one I keep in the home office, and one I keep as a spare for when I travel or if I want to work in another room or at the library, or wherever. The prices on adapters seem to be dropping but they still often run $50 or more. ComputerGeeks.com, however, has the iGo 90 Universal Adapter for only $37.50. You can buy it directly from their site or through their Amazon store. It includes a variety of tips to work with Apple, Dell, IBM/Lenovo notebooks and many more. Check iGo's site for tip compatibility.