This is a remix of this mounting plate by asp55 on Thingiverse.
This one has the inserts a bit closer than the original to fit newer TL-SG105 switches.
Just use double sided tape or whatever you want to mount the plate and attach the switch.
You will most likely have to sand off a bit of the sides for it to fit looser or leave it as it prints to have a snugger fit.
I printed using normal supports touching the build plate only.
The author hasn't provided the model origin yet.