Fast charging: power input (AC): 100-240V, 50/60Hz. Output (DC): 15V-4A 65W. USB Port: 5V-1A 5W (works for mobile phones). The charger also has a compatible output of 15V-4A 65W, 15V-2.58A 44W, 12V-2.58A 36W and 15V-1.6A 24W. The charging speed of the 65 W surface charger is quickly visible. Wide Compatibility: Compatible with Microsoft Surface Pro 3/4/5/6/7+/X/8, Surface Laptop 1/2/3/4, Surface Book 1/2, Surface Go 1/2/3, Surface Laptop Go, Surface Laptop Studio; Model: 1703 1796 1706 1873 1735 1724 1631 1782 1769 1736 1800 1625. Safe charging: Thoroughly tested for performance and durability, no malfunctions, no fire hazard. Built-in smart chip technology provides overload/short circuit/overload protection/heat protection protection. Keep your computer safe and fully charged. Magnetic Plug & Dual-Use: The magnetic plug is very sensitive and automatically attaches to the charging port. Comes with a USB-A port for mobile phone/wireless headphones/digital devices. Super long cable and LED indicator: With a total of 7.8 meters, you can charge and have fun in the bedroom, sofa or office, even if you are sitting in the back seat of the car. Compact size and easy to carry, ideal for home/work/travel. Cool blue LED indicator shows charging status. Best Service: Your satisfaction is always our top priority. You will receive 1 x 65W Surface power supply, 1 x power cord. Enjoy a worry-free 12-month warranty with refund or replacement and friendly customer service.