Input:100-240V.Output:15V-4A 65W.Please note: maximum power is 65W.Not suitable for chargers above 65W. Additional 5V 1A USB port, which allows you to charge your phone and other devices simultaneously.It works with Microsoft 15V-2.58A 44W and 12V-2.58A 36W Compatible with Microsoft Surface Pro 9 Surface Pro 8 Surface Pro 7+ Surface Pro 7 Surface Pro 6 Surface Pro 5 Surface Pro 4 Surface Pro 3 Surface Pro X Surface Laptop 5 Surface Laptop 4 Surface Laptop 3 Surface Laptop 2 Surface Laptop,Surface Go 1 2 3,Surface Pro 2017 Laptop AC Adapter Power Supply Cord Fit model 1706 1800 1631 1724 1866 1868 1876 1824 1873 1983 1943 1950 1958 1963 1625 1796 1769 1735 and so on.higher charging performance than 44W, 39W, 36W, 24W laptop / tablet charger Dependable Protection and Safety:Light and Thin, Fast and Efficient charging, Great for the travel, home or office, Internal smart circuit keeps you and your device safe with multiple protections, including over current protection, over voltage