To use a powered hub or not all depends on wether there is a soundcard or not (I personally would always give my soundcard it’s own USB port) or in case of no soundcard on the hub; how many LED’s a controller has.
An unpowered hub can usually supply around 400 mA of current, so if the total current draw of the connected devices is below that it should work (in theory).
These “D” style USB connectors are great for mounting a USB hub inside of a rack case. Neutrik NAUSB-W Feed-thru Reversible USB A/B Adapter D Panel Mount Nickel
Finally something useful for my PC at home besides gaming …
To find out if I have a single or multi TT hub 
Before I cop it, I do use it for Ableton Live 9 Suite, Komplete 9 Ultimate and Maschine 2.0 (just upgraded) as well 
Not sure how to use the method described in that MSDN page, but my new D-Link 7 port hub (H/W Ver C1) shows up as two devices called “USB MTT 2.0 Hub” within Task Manager, as does my monitor (Dell U2412M).
For a MacBook Pro I always plug my audio 10 into its own jack and the HUB which has 2 x X1 and a F1 and Maschine into the other one