I will add 4 -6 more to Happys total, the power input socket sometimes has 2, the 110/220 volt switch has 2, and sometimes supplys have an extra output socket than can have 2 in them.
My total would be from 16 - 22, depending on how the input socket is secured to the case.

I dont count the 4 screws that hold the PS in the confusers case