Do machines exist with PCI(-e) slots and nothing else, which I could then connect to my main machine through an external port e.g. USB-C?
The idea is that if I put too many video cards in my computer (and even just two can take up a lot of space), I no longer have slots for anything else, and I have quite a few other PCI(-e) cards that I want to be using.
Is this a thing and if not how hard would it be to fashion it?