Hello. I am new to this forum. I have a Surface Pro 128GB and a Surface Pro 3 I7 256GB. I am right now using an ANKER USB3.0 4-Port hub, plugged into the USB port of the Surface Pro (not the SP3). One Port of this hub contains the dohickie enabling the Microsoft keyboard and mouse to communicate with the SP. When I want to transfer files from a 500GM external drive I plug this drive into the second port on the hub and after a few seconds, Windows acknowledges the drive and I have no trouble transferring files. Unfortunately, this setup does not work on the SP3. When I connect the hub to the SP3's USB port and then put the dohickie in the first port on the hub the keyboard and mouse work fine. But when I plug the USB drive into the second port on the hub, the light on the drive goes on indicating power, but Windows never acknowledges the drive. If I plug the drive directly into the USB port on the SP3 I have no problem reading it and writing to it. Does anyone out there know of anyone successfully using a UBS 3.0 hub on an SP3 i7 and having multiple ports work? P.S. I am reluctant to buy the docking stations for 3 reasons; 1) its cost 2) its size 3) there have been reports of failure of the video output.