Superer 36W Power Supply AC Adapter Charger with USB Port for Microsoft Surface Pro 3 Tablet Fit For Microsoft Surface Pro 3 with USB Charging Port Input Volt Range: 100-240V / Output: 12V 2.58A 36W Package include: 1 X Power Adapter + 1 X UL Listed 5Ft Power Cord The additional USB Port allows you to charge another device such as your phone at the same time Warranty: 30 Days Money Back Guarantee/12 Months Warranty