I've used the hub a few times, mainly with BeQuiet fans... no worries! The 3 connectors are standard 4 pins... there are 3 other connectors that are there for RGB. for these I can't say.
Theoretically it should work from the voltage but. Personally, I wouldn't recommend it because the fans may not rotate correctly or the LEDs may not light up. So if it works, I would rather connect it directly to the mainboard. I did the same with my Light Wings fans.