Designed to match your Microsoft Surface Pro 3 Surface Pro 4 i5 i7 Surface Pro & Surface Laptop. KINGDO 36W Power Supply quickly recharges the battery and the USB port allows you to charge another device such as your phone at the same time. Input: AC 100-240V (Worldwide use) Output: 12V 2.58A 36W. USB Port: 5V 1A USB 2.0.