Input & Output: 100-240V 50/60Hz.
Output (DC): 15V-4A.
USB Port: 5V-1A 5W (for cellphones)
Compatible with Surface Laptop 4/ Laptop 3/ Laptop 2/ Laptop 1, Surface Laptop Studio, Surface Laptop Go, Surface Pro 9Surface Pro 8, Surface Pro X, Surface Pro 7, Surface Pro 7+Surface Pro 6, Surface Go/ Go 2/ Go 3, Surface Pro 5 (2017), Surface Book/ Book 2, Surface Pro 4, Surface Pro 3.
With USB Charging Port: With additional usb 2.0 charging port of 5V / 1A. You can charge another device such as a phone at the same time, very suitable for travel, home, office use.
Safety Certified: Made with the highest quality materials, Integrated chip technology provides over-voltage / short circuit/ overload/ heat protection system.
Warranty: 30 days money return guarantee, Worry-free 12 months warranty. 24 x 7 email support.