Designed to match your Microsoft Surface Pro 6 Surface Laptop Surface Pro 5(2017), Surface Pro 4 /Pro 3, Surface Go & Surface Book 1 Input: AC 100-240V Output: 15V 2.58A 44W. USB Port: 5V 1A USB 2.0 44W Power supply quickly recharges the battery and the USB port allows you to charge another device such as your phone at the same time