The model is semi-parametric. You should set the tolerances and the various screw dimensions. The tolerances do not affect hole sizes, nut sizes, nut thicknesses, or screw head thicknesses.
Here's a layout of the hardware its designed for:
||-----------------------||
|| TP-Link | Raspberry ||
|| TL-WR802N | PI 3 ||
||-----------------------||
|| Netgear GS308 ||
|| Unmanaged Switch ||
||-----------------------||
|| HP Elitedesk 705 G4 ||
||-----------------------||
|| Power ||
|| Adapters/Supplies ||
|| and MPI3508 Display ||
||-----------------------||
Not shown: TP-Link Arch AX1800 mounted on the back of the rack
All STLs should be in millimeters.
The public Onshape document can be found here: https://cad.onshape.com/documents/d0cc819ad51f2952880980c0
The author marked this model as their own original creation.