US Compass 48W Replacement AC Adapter for Microsoft Surface Pro1 & Pro 2 Tablet Model 1536 12V 3.6A Laptop Notebook Power Transformer, Battery Charger, Power Supply with Power Cord Microsoft Replacement 12V 3.6A 48W Power Adapter with USB connector Port Output:12V--3.6A 48W 5V 1A Perfect work with Microsoft Surface Pro1 and Pro 2 Tablet Model 1536 One Year Warranty