At this price point you can't expect a Rolls Royce-experience, but for what it is, it just works. Not much to it.
The on/off function is nice, turns on and off very easily, it's responsive and fast. The cable is a tad stiff, but if that's my only negative at the price point, I'd say it's money very well spent.
I currently run it through another USB 3.0 hub and only use it to power a single midi controller, a Novation FLkey. I used to run a mouse and computer keyboard through it as well. No problems either way, overall just a great - and affordable - experience.
OBS. other reviews mention an external power supply if you need it to power a bunch of things, just a heads up.