X570 Pro 4 fan

I take it you are talking about the chipset fan (I'm at work, and work firewall blocks the photos). That metal should have some clips on other side of the motherboard to release the metal shroud. Keep in mind, that in theory that shroud works as a heatsink, and might have thermal pads for heat transfer.

Disconnecting the fan might not be a good idea, since AMD never bothered developing any power saving features for the chipset, thus the fan. Some say, that fan is not really needed, however, "some" are stupid :D
There is only one motherboard in the market without the fan, and it has been developed with that in mind.
What I do once in a while is take my vacuum cleaner aka hoover and bring it close to the metal shroud, fan picks up the air circulation and starts spinning very fast at counter rotation. In my not so scientific opinion, this action helps removing any gremlins in the fan :D as well as dust, since the speed the fan runs at when vacuum pipe is close to it is very very high.
Also, setting fan profile to not extreme might help with the noise.
I also have GPU in my second PCI-e slot, since every motherboard manufacturer kinda forgot that GPU heatsinks block that motherboard fan very easily.

Anyways, that chipset mainly governs PCI-e lanes and SATA traffic

muziqaz wrote: I take it you are talking about the chipset fan (I'm at work, and work firewall blocks the photos). That metal should have some clips on other side of the motherboard to release the metal shroud. Keep in mind, that in theory that shroud works as a heatsink, and might have thermal pads for heat transfer. Disconnecting the fan might not be a good idea, since AMD never bothered developing any power saving features for the chipset, thus the fan. Some say, that fan is not really needed, however, "some" are stupid :D There is only one motherboard in the market without the fan, and it has been developed with that in mind. What I do once in a while is take my vacuum cleaner aka hoover and bring it close to the metal shroud, fan picks up the air circulation and starts spinning very fast at counter rotation. In my not so scientific opinion, this action helps removing any gremlins in the fan :D as well as dust, since the speed the fan runs at when vacuum pipe is close to it is very very high. Also, setting fan profile to not extreme might help with the noise. I also have GPU in my second PCI-e slot, since every motherboard manufacturer kinda forgot that GPU heatsinks block that motherboard fan very easily. Anyways, that chipset mainly governs PCI-e lanes and SATA traffic

Thank you for the info, yes that is the correct fan. I will give the vacuum trick a try. Setting the fan speeds in either BIOS or in A-Tuning doesn't help much since it only makes noise on startup. I will keep it connected but open a ticket with ASRock to see if they will replace it. (Hopefully before it gets noisy all the time.) Also good to know I can get to it if I need to replace it myself.

Cheers!

If you are talking about short period of time when fan ramps up with this weird typical small fan vibration/whine, then it is normal for these tiny crapfans. It does that before the software governing fan speed kicks in. All the motherboards had issues with fan noise with very early BIOS versions. There was specific BIOS version released just to correct fan noise issue long time ago. I wouldn't worry if fan settles down after full boot up.
Doubt Asrock will do anything about it, in case of the miracle they respond to you.