【Specifications】Power Input (AC): 100-240V 50/60Hz. Output (DC): 15V-2.58A 44W. USB Port: 5V-1A 5A, The charger also supports output power 12V-2.58A 36W and 15V-1.6A 24W 【Extra USB Port】USB Port: 5V-1A 5W. Our 44W power supply quickly charges your laptop and comes with a USB port that allows you to charge another device, such as your phone, at the same time 【Wide Compatibility】 compatible with Microsoft Surface Pro 3/4/5/6/7, Surface Laptop 1/2/3/4, Surface Book, Surface Go 1/2/3, Surface Laptop Go, Surface Laptop Studio; Model: 1703 1796 1706 1873 1735 1724 1631 1782 1769 1736 1800 1625 【Total Safety Protection】Each charger undergoes rigorous performance testing. Keep your computer safe and fully charged with our Surface Pro charger that protects against overcurrent, overvoltage, overcharge, with short circuit protection and automatic reset, UL/CE/FCC/RoHS certified