This is an Apple TV mount for the 3rd gen Apple TV. You can put it anywhere with double sided tape without damaging your Apple TV.

Yes it covers up the ethernet port, but i dont need it and if you need it you can modify the stl.

When sliding the Apple TV in it takes some force (and maybe some cracks) and i havent tried getting it back out since the Apple TV just sits in one place all the time.

I printed it laying on the big side with the small edge so that the knob that holds the apple TV in is good. It may also work so that the big side with the big edge is at the bottom but i havent tried it (Probably less supports needed.