Mackertop&reg;19.5V 12.3A 240 Watt PA-9E AC Adapter for DELL Alienware M17x R2 R5 COMPATIBILITY: Alienware M17x, M17x R2, M17x R3, M17x R4 Series Alienware M18x Alienware M18X R2 Alienware X51 Precision M4700, Precision M6400 Precision M6500 Precision M6600 Precision M6700 Precision M6800 INPUT: AC/DC 100-240V 50-60Hz; OUTPUT: 19.5V 12.3A. Power: 240W CONNECTOR SIZE: 7.4mm * 5.0mm (Refer the pictures) Compatible Part Numbers: PA-9E, PA9E, 330-4128, 330-3514, J938H, Y044M, U896K, J211H PACKAGE: 1 X OEM AC adapter (Not include power cord)