I connected it to the power strip outlet which used to power my laptop adapter. Since the unit does not ship with a cable, I tried to power it with the cable that powers my HP monitor. The cable works for sure as my monitor works, but when connected to psu and powered on the fan does not rotate.
If the power load is in the right range for that PSU, it might not need the fan to operate at all. Like amuffin said, running a heavy benchmark might change that.