Simple POE switch holder to mount flat surface: table, wall and so on. The switch is inserted into the holder and screwed in this way, in order to take it out, you need to unscrew the holder from the wall. 
Designed for printing without supports

Modeled in Fusion360, not very parametric, but you can change the dimensions. 
The switch on ali is called "Hiseeu 48V 8 ports": [https://aliexpress.ru/item/4000117433660.html](https://aliexpress.ru/item/4000117433660.html)