If you are using, or planning to use the new dock (hubs) PF#-00002 with SP3’s, then you may experience issues unless you upgrade your surface drivers. Microsoft is aware of this compatibility issue and have issued an update.
It included an update to the Surface Aggregator driver which allows for SP3 compatibility with the new dock.
Available at http://www.microsoft.com/en-us/download/details.aspx?id=38826. Select one of the two below depending on the OS i.e. either Windows 8.1 or 10
Windows 8.1 use: