System is as follows;
mobo- as above
CPU- i5 3570 K
PSU - Corsair TX850
RAM - 2x 4 gb Corsair DDR3 1866
Graphics - integrated GPU (no card)
HDDs - 2 x Kingston Hyper Xs & 2 WD raptors
Audio- on board
OS - Windows 7 64 bit
Cooling - Intel water cooling (closed system)

I have used up both 6gb (grey) sata slots and thought I would install a Kingston Predator M.2 PCIe G2 x4 SSD in the x 4 (Black) PCIe slot. Will this work? I see I will have go unto the BIOS and set the black slot to x4 which means apparently that the other slot will be disabled.