what are these rubber holes on the back of the pc case?
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.
![](https://mbin.grits.dev/media/cache/resolve/entry_thumb/04/d4/04d47c5e32e450f968e09a9fbc9d1add78b44829b5611a2b5bf022471e94037d.webp)