Why am I getting this warning?
If you received this warning message, our compatibility tool detected that some of the hardware that powers your computer's USB ports have known incompatibilities with Rift.
What does this mean?
Rift may not work with your computer's USB 3.0 ports.
My GA-990FX-UD3 gives the same thing, also my FX-9590 apparently doesn't meet the spec (yeah yeah AMD, i know, i know)