I have noticed that a USB 3.0 drive plugged into the 3.0 port on the dock transfers at 2.o speeds arox. 36 mbs from the drive to the surface. Then if you take the same drive and plug it into the usb 3.0 port on the surface itself, it transfers at over 120mbs. Can anyone confirm this? I'm running Windows 10 with all the latest updates.