I'm guessing if I have two USB external drives I should connect them both directly to the two USB ports in my Surface Book. But if I want to use additional drives or sync my iPhone, etc., what's the best way to go? Should I keep my main external drive plugged into one of the USB ports and plug everything else into a USB hub plugged into the second port, or should I plug everything into the hub and connect only that directly to the Surface Book? I may eventually spring for the new Surface dock but even that will only give me a total of four USB ports so I would still need a USB hub since I have more than four total external drives and devices to sync. And is it worthwhile using a USB hub that is not USB 3.0? Is that going to result in too slow speeds and/or errors? Thanks in advance!