Power Delivery Charger passed rigorous test compliance standard. No more worries about damaging your device, it's fast and safe to provides you the best possible performance Specifications: Input Voltage: AC 100-240V,50/60Hz, Output : DC 19.5V, 12.3A, Power Wattage: 240 Watt, Outlet: 3-prong, Connecter size: 5.0mm x 7.4mm System Compatibility: DELL Alienware M17x,M17x R2,M17x R3, M17x R4 Series DELL Alienware M18x, DELL Alienware M18X R2 ,DELL Alienware X51