The Kensington 20048 SmartTip Pack for IMB Notebooks provides compatibility made easy. These SmartTips are made to be used in conjunction with any of Kensington's compatible power supplies and adapters. Each SmartTip allows your Kensington adapter to work with the appropriate laptop for which it has been designed. Kensington designs high-quality, stylish computer accessories for today's computer users. Well-known for its commitment to research and extensive experience in the accessories marketplace, Kensington supports innovative product development in computer security, mobility accessories, mice and trackballs, and other categories. The Kensington 20048 includes one N2 tip, which has been designed for IBM brand notebooks and will work on any other products that use an N2 power supply tip.