?GUARANTEE?Our ZLZMZN Brand New Charger committed to providing the best service and products. We provide 18 months product maintenance service & replacement or refund within 30 days. Your issues and questions are very important to us, we are always on your side, Thank you!. ?YOU GET?: 1 x 199W AC Adapter & 1 x US Power Cord. ?PORTABLE DESIGN?Lightweight, Small size, Portable. Great for travel, home and office. Very easy to carry. ?COMPATIBILITY?Microsoft Surface Docking Station 2, Model 1931 1917, Surface dock 2. ?POWER SPECS?Input: 100-240V 3.5A, 50/60Hz. Output: 15.35V 12.96A Power: 199W.