I designed this for the Lenovo “Tiny” form factor PCs (known as “Mini” form factor for HP and “Micro” form factor for Dell) . The spaces for the PCs are 35 mm wide. You might require very slight re-scaling in your slicer for HP or Dell computers.
I was too lazy to design something modular so instead, I just print 2N-2 stands for N computers and use the middle computer(s) to hold 4 stands together.
The author marked this model as their own original creation.