Nogis Charger Adapter for Microsoft Surface Pro 3 12 Inch Tablet Compatible with Microsoft Surface Pro 3 Only!! (Not Fit for Surface RT/ Pro/ Pro2!!) high speed charge, Tinned copper, Electromagnetic Immunity Input: AC 100V-240V 50-60Hz ------ Output: 12V 2.58A Designed to meet or exceed your original manufacturer's ac adapter A convenient backup charging cable for travel and business.