GPK Auto Power Adapter for Dell Precision M20 M65 M70 M60 M65 M2300 M2400 M4300 M4400 M4500 M4300 M2300 Alienware M11x Am11x-826csb Laptop Charger Auto Truck Adapter Car Charger Power Cord Input: DC 11V - 16V Output: 19.5V 4.62A 90Watt Service & Support 1 year warranty Designed exclusively for use with the laptops 100% compatibility with the original Use minimal power this adapter is designed to save energy.