This AC Adapter from T-Power is specially designed to meet the power needs of your device. The adapter enables you to simultaneously operate your device and charge its battery (if applicable) from any standard electrical power outlet either at home, office, or while traveling abroad. This lightweight and easy-to-carry adapter is the ideal portable power source for your device. This AC adapter/charger is compatible with the following models: Dell PRECISION M4400 LA90PE0-01 M4500 NY512 PA-3E NOTE: If your model is not seen here, ask us and we will find it for you..Input: AC100-240V (worldwide use) Output: DC 19V 4.74A Power: 90WInternal over-tempurature shutdown. Rugged case with moisture-seal protectionThis product has a 30 day Money-Back Guarantee, and a 1-year limited warraty.