I can confirm that. Tried it before and didn’t work. I can post some pics later showing the different daughter cards on each panel. They are different.
Or in other words, may I install R5 left side cover panel.  I know R5 doesn't support AlienFX 2.0. I am guessing left side cover panel is not the same between R5 and R8.  Anyone can help me confirm that? Thanks
Aurora R5 and R8, share (left) side cover panel?