I have an extra “hyper m.2 x16 card v2” if you want it

Check bios for lower fan profile.

Can also add a pci slot fan or whatever additional fan you can fit. Idea is extra fan keeps idle temp lower so loud fans don’t spin up as often

Just close the door.

I once bound a /16 to a server. Dropped like a rock instantly over ssh attacks 😂 over 10,000/s