Arduino Ethernet Switch
thingiverse
It's an example of how to build with and arduino nano and a ethernet module, a switch that can be controlled via lan. You can find the repository here: https://github.com/gsampallo/ArduinoLanSwitch And the article on my blog with more details: https://www.gsampallo.com/blog/?p=612 The box and the top there are easy to print, no need to support.
Download Model from thingiverse
With this file you will be able to print Arduino Ethernet Switch with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Arduino Ethernet Switch.