PluStore&reg; US Plug Travel AC Wall Charger Power Supply Adapter For Microsoft Surface Book Intel Core i5 i7 Tablet AC Wall charger adapter for Microsoft Surface Book Intel Core i5 i7 Tablet. Circuit Protection : Short Circuit Protection and Overload Protection. Lighter weight, A convenient backup charger for travel and business. We recommend you to use formal mobile power bank to charge your tablet. Cable length:1.5m, DC input:15V 1.6A, AC output:110V-220V