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.
It is probably an old case design. In the early water cooling days, there would be separate watercooling units that sat outside the case. The grommets were so you could pass your tubing through.
I wouldn't really worry about the dust tbh, you will wind up having to clean it regardless.
Not just for water cooling. It's for cables that pass in or out too.
Such as?
Edit: I mean you can contrive something if you're MacGyver but there's no remotely standard use case for that.
Such as sata cables for quickly hot plugging hard drives you are testing/inspecting/cataloguing and donβt want to open the whole case between each drive, or leave the case open.