Awinner Charger For Surface Book Pro 4/Pro 3 , AC Home Wall Charger 12V 2.58A Power Supply Adapter for Microsoft Surface Book Pro 3/PRO 4 Intel Core i5 i7 Tablet Made for Microsoft Surface Book Pro 3 / Surface Pro 4 Intel Core i5 i7 Tablet(Not Fit for Surface RT/ Pro/ Pro2 and surface pro4 Intel Core M3 Easy to fit and remove Easy to carry, ideal for travelling Electromagnetic immunity and high charging speed Power: Input 110V-220V/ 50-60Hz Output:12V 2.58A