The highest-performing Surface Pro replacement charger on the market! charger has a high charging efficiency of up to 96%.Input: 100-240V 50 / 60 Hz; Output:15V-4A 65W; USB Port: 5V-1A; replacement for Microsoft surface pro charger, a good replacement ac adapter if your original power supply has run out of life. Wide Compatibility: Compatible with Microsoft Surface Pro 10, 9, 8, 7+, 7, 6, 5, 4, 3, X, Surface Studio 1 i5, Windows Surface Laptop 6, 5, 4, 3, 2, 1, Surface Book 3, 2, 1, Surface Go 3, 2, 1.Support 44W, 39W, 36W, 24W model,automatic identification and conversion of charging power. Additional USB Port (5V1A), The USB port allows you to charge another device such as your phone at the same time Laptop charger adopts the most advanced technology and is made of the highest quality materials. Smart chip is installed inside, include multiple smart features safeguarding against over-current, over-voltage, overload, temperature protection, short-circuit protection, and auto rec