what are these rubber holes on the back of the pc case?
![](https://lemmy.zip/pictrs/image/b3a440db-cb5e-4b64-85ef-b48a314b966e.png)
![](https://lemmy.ml/pictrs/image/d3d059e3-fa3d-45af-ac93-ac894beba378.png)
![](https://lemmy.ml/pictrs/image/2a828064-261d-4009-9b60-441fc389b012.webp?format=jpg&thumbnail=256)
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.
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Hole for Pepnis
Forbidden butthole
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