This Microsoft Surface Dock PD9-00003 1661 is the perfect accessory for your Surface Pro, Laptop, or Book. It offers port expansion with audio out, mini display ports, Ethernet (RJ-45), and USB 3.0 connectivity. The black docking station is designed for a seamless setup and is compatible with a range of Microsoft models, including the Surface Pro 3, Surface Pro 4, Surface Book, and Surface Laptop. The Surface Dock provides a convenient way to connect to a variety of peripherals, such as a monitor, keyboard, and mouse. With its sleek and compact design, the docking station is a great addition to any workspace. The Microsoft Surface Dock PD9-00003 1661 comes with a power supply and is compatible with a range of accessories.