About this item Input & Output: 100-240V 50/60Hz. Output(DC): 15V-4A. USB Port: 5V-1A 65W Compatible with Surface Laptop 5, Laptop 4, Laptop 3, Laptop 2, Laptop 1, Surface Laptop Studio 1 i5, Surface Laptop Go 3, Surface Laptop Go 2, Surface Laptop Go, Surface Pro 9, Surface Pro 8, Surface Pro X, Surface Pro 7+, Surface Pro 7, Surface Pro 6, Surface Go, Go 2, Go 3, Go 4, Surface Pro 5 (2017), Surface Book, Book 2 i5 (Not i7), Book 3 i5 (Not i7), Surface Pro 4, Surface Pro 3 Dependable Protection and Safety: Built-in multi safeguards to protect against overcharging, overheating, short circuiting, friendly to computer battery Top-rated 65W Laptop Charger: Full charge Surface Pro 9 in only 1.5h, perfect match for surface model 1706, 1866, 1796, 1724, 1625, 1867, 1735, 1800 and so on, higher charging performance than 44W, 39W, 36W, 24W laptop/tablet charger Dimensions: 3.6 x 2 x 1 inches