Compatible models: For Dell alienware M17 R3 M17 R4 P45E laptop. Fan description: brand new, 12V?0.38A. Applicable scenarios:Solve the error, abnormal noise, and high temperature of your laptop fan, so that your laptop fan can operate normally again! Worry-free service: Brand new, every fan has been tested before shipment and packed in a shockproof box. Ensure safety during transportation! In addition, we also provide a 90-day warranty for the product. Note: Please check the compatible models before purchasing and compare the sample fan Pictures ? If you have any questions about what kind of fan you need, please contact us.