This is a genuine Microsoft Surface AC power charger, model 1931, designed for use with the Surface Dock 2 and Surface Go. It is compatible with Microsoft Surface devices and has a voltage of 15.35V, output current of 12.96A, and is black in color. This unit is of the AC/Standard type and is sold as a unit, with a country of manufacture in China. It is a part of the Microsoft compatible product line and is ideal for use with Microsoft Surface devices.