Lenovo Tiny "topless" 1/2U 10" rack mount

My cluster of M720Q's got really warm after installing 10G PCIE NICs in them. I already had them rack mounted, so I redesigned a mount where I could slide the PCs in (and lock them in place) without the top cover. I also wanted to experiment with Ceph, so I made an optional 2U version (either printed as one big 2U, or as a 1U addition to the "base" mount) that adds a shelf to screw in a 2.5" drive, two keystone jacks and two 40mm fans.

To lock the PCs in place, slide them in and then add an M4 bolt through one of the holes on the side. At least on my M720Q's there is a hole in the “base chassi” right there.

I've printed in both PETG and PCTG on my P1S without any problems. No supports necessary.

Known issues/ideas that I can't be bothered to do 3 re-prints for: 

• The power button is pretty hard to press. There's probably a better solution than “stick your finger all the way in there” but I don't ever turn these nodes off so I couldn't be bothered.
• The “grille” snaps off easily after printing. It's probably worth swapping them for a thicker pattern.
• The corners aren't rounded.
• You could probably fit even more keystone slots.
• Turns out cheap 40mm fans are super loud, so you could remove the fan holes or fit a larger fan (screwed to the outside edge) instead.

Here's the OnShape file if anyone that might want to remix it.