Hello! Sorry for offtopic question , but what is the advantage of using powered risers ? I was using 1x-1x unpowered risers with H61 BTC PRO ( wich has 2x MOLEX power plugs) for 2 yr. and had no problem with it.
The Current series of graphics cards, the RX 470/480 pull almost 1/3rd of their power from the PCIe slot directly so unpowered risers would either not work or simply burn out. Older cards work fine with unpowered risers though, since they draw almost all of their power from the PSU power cable.