This Expansion Dock for Surface Computer Dedicated is a perfect fit for those who own a Microsoft Surface Laptop or Book. It is a black magnetic connect docking station that comes with a variety of ports including VGA, SD, TF, USB C, HDMI, USB 3.0, 3.5 mm Audio, and Ethernet. This dock is AC-powered and was manufactured in China.The dock is compatible with a range of Microsoft Surface models, including Surface Pro, Laptop, Book, and Laptop go. It is a great accessory for those who need to expand their computer\'s ports for work or personal use.