I had to have my SP3 replaced due to a hardware with the SSD or controller. The replacement SP3 doesn't seem to fully recognize the Microsoft Docking Station. It shows video through the DisplayPort on the dock just fine, but neither USB or Ethernet are recognized. I've tried looking for updates repeatedly since I remember that there was an update related to the Dock when it first came out. MS has either pulled it or I've installed it and can't track it down under history. Bottom line, does anyone have any suggestions about how to deal with the unrecognized dock. Thanks, Dan E.