Microsoft Surface Pro / PRO 4 Compatible Docking Station with 256GB SSD. Displayport, USB3 Hub, Charger, Gigabit ethernet. "Sign of Life" for early POWER ON visual indication Side mounted design does not restrict PRO 4 viewing angle Integrated PRO 4 charging function and power the USB hub Speed Speed USB3.0 Hub and Gigabit ethernet 256 GB of SSD