Ultra has provided a plethora of cables for massive amounts of connectivity with this unit. There is a total of 16 additional cables with this unit that allow connecting a total of 19 devices, including three fans + motherboard connections. If you need more devices inside your case than that, well, maybe you should build a second computer instead. . .
That's a really interesting note Luvlyan. I browsed through the specs of the 800W as well as the 600W. Just to also note, the 600W version is reported to run 85% efficient. In the future, we'll be able to either confirm or deny this information.