Designed to match your Microsoft Surface Pro 7 Pro X Pro 6 Surface Laptop 2 Laptop 3 Surface Pro 4 Surface Pro 3 Surface Pro Surface Laptop Surface Go & Surface Book. KSW KINGDO 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. Input: AC 100-240V (Worldwide use) Output: 15V 2.58A 44W. USB Port: 5V 1A USB 2.0.