Sold as 1 Each. Universal docking station is great for highly mobile Microsoft Surface users, as well as monitors and projectors that support up to 4K (supports USB Type-C power pass-through). Allows you to connect with confidence to Microsoft Surface devices with USB Type-C (Microsoft Surface Go, Surface Book 2, Surface Laptop 3, Surface Pro 7, and Surface Pro X). Simplify your packing by eliminating the need to travel with extra video adapters. Meets or exceeds CE, FCC, RCM, REACH, RoHS, WEEE standards. Dimensions: 0.63'H x 3.05'W x 5.33'D. Connect and charge your USB Type-C enabled Surface device and USB accessories via a 3 amp/60W (or higher) USB Type-C charger (not included), or power the dock and connected devices using the Surface battery when traveling. Extend your productivity capabilities via 2 x USB 3.1 ports (up to 5Gbps) and an extra USB Type-C port for data synchronization (up to 5Gbps). 3-year manufacturer limited warranty. Station has 2 x USB 3.1 ports (rear) with 5V