The Microsoft Docking Station for Microsoft Surface Pro 3, 4, 5, 6 Model 1661 is a black docking station specifically designed for Microsoft Surface laptops. It features Ethernet (RJ-45) and USB 3.0 ports, making it easy to expand the connectivity options of your device. This docking station is compatible with multiple laptop sizes and models within the Microsoft Surface product line, and is made of rigid plastic for durability. With passive cooling capabilities and AC-powered features, this docking station provides a convenient and efficient way to enhance your laptop's functionality.