I am using the Unifi 16150 Switch.

This is a very simple print that allows you to put your switch on a flat surface and helps with cooling and cables.

You will need various lengths of M3 screws and nuts. (washers are good but not required)

I would recommend printing in PETG and 20% infill for strength.

This model isn't perfect but gets the job done; feel free to modify it. :)