POWER SPECSAC input, 100-240V, 50-60Hz (for worldwide use) , DC output 19.5V 9.23A 180W ,Connecter size DC7.4mm × 5.0mm, with central pin inside.Compatible ModelSuitable Alienware 13; Suitable Alienware 13 R2; Suitable Alienware 13 R3 Suitable Alienware 14; For Alienware M14X Alienware 15;For Alienware 15 R2; For Alienware 15 R3; For Alienware 15 R4 For Alienware 17 R2; For Alienware 17 R3;For Alienware 17 R4; Suitable Alienware 17 R5 Suitable Alienware Alpha ASM100; For Alienware Alpha ASM-R2 For Alienware Area 51M Fit For Alienware M11X; Fit For Alienware M11X R2; For Alienware M11X R3 For Alienware M15 For Alienware M17 For Alienware M17X R4 Alienware For X51 R2...