The power supply is a big hit, I did not indeed maxed out but it seems to be very well controlled me. The heat generation compared to, for example, an ASUS HTC or power adapter (for tablet / mobile) is relatively low to non-existent. I can charge so multiple devices and provide power through the hub.
The curious thing is that my current meter can not register a consumption for this power supply and the power supply is barely warmer than the ambient temperature, even if there hangs a USB3.0 hard disk drive or a cell phone is charging it.