The Microsoft Surface Dock 1661 90W is a versatile docking station designed specifically for Microsoft Surface devices such as Pro 3, 4, 5, 6, and 7, as well as Laptop 1 and 2. With a sleek black design and passive cooling, this docking station provides multiple ports including USB 3.0, Mini DisplayPort, Ethernet, and Audio Out for seamless connectivity. Compatible with various Microsoft Surface models, this unit offers AC-powered functionality and built-in USB ports for added convenience. Ideal for expanding the capabilities of your Microsoft Surface device, the Surface Dock 1661 90W is a reliable and efficient accessory for enhancing productivity.