I had some difficulty with it the first time I tried, yeah. I don't know if the problem is me or Cerberus! Last time I did a build was a few years ago. I ended up having to put two motherboards in because the first one had a bad ram slot(already returned to Amazon) and between that and the GPU thing I was so tired of fiddling that I just left the I/O shield out this time.
There's a decent chance I end up switching this machine to an Asrock itx/ac board because the USB 3.0 header is under the 240mm AIO, which I didn't realize would happen(should have though, my mistake) and I _think_ I can still get to it with a low profile cable but if I can't I might just give up on mATX.
For the time being I just wanted a working machine asap.