I just installed this on my computer as a dedicated audio device hub:
I seem to notice a boost in quality coming from my ODAC in detail and dynamics, I'm not sure why, it could be my brain telling me stupid things again. I was having some issues with the ODAC and my motherboard's USB ports (major distortion after leaving it plugged in for a few hours, fixed by unplugging and replugging) and I think it may have been fixed with this hub, though it hasn't been long enough to confirm).
Its possible the small capacitor on each port is helping to stabilize the power supply, also the fact it isn't taking power through the motherboard may be helping. Either way $20 seems a good deal to add USB3 interfaces to a pc..