It all snap fits into place but I strongly advise bolting it down if you're gonna move it around often or will put it somewhere it might fall.
The top piece needs supports for the bottom of the screen hole
The 4 holes on the side can be used to bolt down a bracket to attach it to a printer but I just leave it on the table for now, might make a bracket later if I feel like it.
The author marked this model as their own original creation.