180W Dell Alienware Charger, Max 185W 19.5V 9.5A Dell Power Supply for Dell Alienware 15 R1 R2, 17 R3/15 R3/15 R2/X51 R2/13/14/M17X/M15X/M14X/X51, Dell Precision M4600 M4700 M6600 M6800