Microsoft Surface Pro Charger & Laptop Charger,BLUEWIND 15V 2.58A 44W Portable Charger for Microsoft Surface Laptop & Surface Pro (2017) & Surface Book and Microsoft Surface Pro 3/Pro 4 Designed to match your Microsoft Surface Pro Surface Laptop Surface Pro 3 Pro 4 Surface Go & Surface Book. BLUEWIND 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. Over heating protection and short circuit protection 1 Year Warranty with Replacement Coverage.