X570 Phantom Gaming 4 - PC waking up from sleep

Hey, I just bought the board mentioned in the title. All good, much better than a certain MSI B450 motherboard, but there's just one problem I have with it.
When I suspend my PC, after a random amount of time (usually in about 10 minutes) it will wake up from sleep without my intervention.
When I check "powercfg /lastwake", Windows claims it was woken up by a "Power Button". Which doesn't make sense, if my case's power button was spontaneously firing at random intervals for some reason, my pc would be shutting itself off randomly, wouldn't it? And that does not occur.
I'm certain it's the motherboard. This is the only part I swapped in my Pc, there's been no other changes, that includes the system (that wasn't reinstalled). On my previous motherboard I did not have this issue at all.
What could be the issue? In BIOS, I do not have any wake sources enables (incl. mouse/keyboard, wake to Lan and some other options listed there that I don't remember).

just swapping mobo's out without a fresh install .. you can run into oddities. Things to try though..
double check your system panel connections
go through device manager and show hidden devices .. look for exclamation marks first off .. I've done mobo swaps and I'd go through and uninstall all grayed out stuff and then reboot.
Download latest AMD chipset drivers then Uninstall AMD chipset drivers in add/remove programs/apps.. reboot and install chipset drivers you just downloaded.
Install appropriate latest BIOS for whatever CPU you are running.

I'm guessing just uninstalling/reinstalling chipset drivers might cure your woes though ..

Man, these forums really need a way to edit your own posts...
Forgot to mention, yes I did check my front panel header connections, everything seems to be in its proper place. I was thinking about messing around a bit (eg. moving the "RESET SW" connector to the right of the header and rotating it, and connecting "POWER SW" sideways to use a different GND pin), might be something I'll try if cleaning up removed devices doesn't help.
I'll also be getting a new case, most likely this week. Yet another thing to check, I quite doubt my current case's power switch is faulty but I'll be giving it a shot whether or not I want it :)

Arriving a bit late, but with good news - ever since I've done the mentioned things (tl;dr: removed all unplugged devices in device manager, reinstalled AMD's chipset driver), the sleep issues are no more. Thanks!