Changdong Magnetic US Plug Power Supply AC Adapter Cord for Microsoft Surface Pro 3 Intel Tablet (Pro 3 Adapter Without Usb)(Taboe Charger) Easy to fit and remove. I/C Chip technology prevents your tablet's battery overcharging. Electromagnetic immunity and high charging speed. It is convenient for you to charge for your tablet when you are in travel. Power: Input 110V-220V/ 50-60Hz Output:12V 2.58A.