Hi,
I've a problem, I have this mb with a 9900k and a nmve m.2 960 evo.
When I install the m.2, pcie 16x slot drops to 8x, I tried to install m.2 each of every 4 slot of the mb ( 2 for dimm.2 e 2 for onboard slots).
Also upgrade and downgreade firmware with same results... If I install a simply...