Input: AC100-240V, 50/60Hz (worldwide use); Output: 12V 3.6A 48W. | Compatible Models: Microsoft Surface Pro 1 Pro 2 RT 1512 1536 1601. It is not available for Surface Book, Pro3, Pro4, etc., and LW-065/400/120/001. | Reliable circuit board design: overcurrent, overvoltage, overload, temperature and short circuit protection. Core security components, multiple protection and safer. | Comprehensive environmental testing: to ensure the safety of products, apart from the strict implementation of 72 hours aging test, the test must also deal with a variety of physical and destruction, 100% quality assurance testing. | 100% new OEM replacement item, fast shipping from US, 1 Year Warranty, 30 days money back guarantee! Any problem, please contact us directly.