What are the rubber circles for on the back of my pc case? Should I just leave them like that if don’t have a need for them? Or are they likely to let I’m dust into the motherboard?
Edit: thanks for all the replies, so just for water cooling I have no need for.
Watercooling holes. That said, I’ve never seen anyone use them. Mounting external rads is a removed. They take up space. Most people just buy a watercooling compatible case.