Disable the Asus X570-E PCH fan control.
Disable the Asus X570-E PCH fan control.
The motherboard fans feature a detachable header connection somewhere on the board; just remove it. You can also adjust their speed via the UEFI settings, lowering them below 1500 RPM.
Unfortunately, the Asus X570-E BIOS doesn't support PCH fan control.
I understand you're trying to remove the fan from your Be Quiet 900 Pro. You mentioned it has a great airflow setup, so simply disconnecting it might be a viable option. Let me know if you need further guidance!
It was easy to just turn it off since most of those fans run in a room with minimal airflow around the CPU. This isn't the same as a big air cooler, but I'd still keep an eye on temperatures before and after if you do that. The setup I used isn't for gaming anymore, so there aren't high-power GPUs pushing heat up through the chipset or VRM.