TP-Link SG3218XP-M2 Rack Ears, I put mine in a safe place that was so safe I couldn't find them so I had to model them.

Strength wise, while prototyping I was printing them at 0.24 on the lowest quality/quickest settings and it somehow held the switch, so I wouldn't worry if you print it at sensible settings.

I also reccomend using PETG (or stronger) over PLA due to it being better at dealing with creep.

Incase this needs modification as my 3D moddeling skills arn't the best, see the tinkercad link here 

Printing Settings:
Resolution: 0.24
Infill: 60% (This is likley over kill)
Infill Pattern: Gyroid
Walls: 3
Supports: No (Depends on printer)
Rafts: No (Depends on printer)