I have the rog z390-e and nzxt h500. there is this cable with a 6 pin (4 empty) connector and 4 little 2x 1 pin and 2x 2 pin things all detached. first of all, the 1 pins say p+ and p- led the 2 pins say h.d.d led and pwr SW. what is this cable called? (it came in a plastic bag) and where do i plug both ends?