Portable Charger Power Supply Adapter for Microsoft Surface Pro 3 12 Inch Tablet(Pro 3 Charger 2 Without Usb) Fits for Microsoft Surface Pro 3 12 Inch Tablet I/C Chip technology prevents your tablet's battery overcharging. Easy to carry around, on trip and travel. Package: 1pc Power adapter charger for Microsoft Surface Pro3 Tablet Power: Input 110V-220V/ 50-60Hz Output:12V 2.58A