Just upgraded my PSU to a Corsair AX850. Probably overkill, but I didn't want to ever have to change it again. But now theres a large space in the back of my Case because the PSU that came with my PC was larger.
You can see the space right under the corsair, and above the case. It's about an inch wide, maybe a little less.
Does that space need to be covered? How can I cover it?