Compatible with Model: Alienware M18 Alienware M18x Alienware X51 Alienware X51 R2 

Brand: Dell

Input: 100-240, 50 / 60Hz

Output (output): 19.5V -16.9A

Power: 330W

Interface: 7.4mm * 5.0mm (large mouth with needle)

Package Included：

1x Original DELL Adapter Charger

1x power cable(for your country) US/ UK/ EU/ AU plug