MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
If you look at hofftari's original case that I remixed (https://www.thingiverse.com/thing:1325370), He lists:
4x M3x16 screws for the case
2x M3x8 screws for attaching the case to the frame.
The MK2S has two tapped holes there which I believe are for the multiplexer board for the multi-material upgrade but they work great for mounting the Raspi.