I wanted to use the empty M.2 slot that was used for the Wifi card to add a 2.5gb port, so I bought a M2 A+E to ethernet adapter on aliexpress and made this adapter to make it somewhat clean inside the computer. It's not perfect, a tiny bit annoying to install but in the end it works well for me.
I used 2 * M3 (5mm) hex screws to hold the ethernet adapter and the bracket together.
I used 2 * M2 (5mm) hex screws to hold the bracket on the motherboard.
The author marked this model as their own original creation.