So I will be buying an EVGA CLC 280mm rad. I never used an AIO before. Instructions online are pretty mixed. I was wondering how I would connect the Fan and the pump connections. I have a gigabyte z390 Aorus PRO. I was wondering if I have to install the 2 fan connections to the AIO connector then install the pump to the CPU fan header on the motherboard or if i just install everything to the motherboard. I am pretty nervous about this step as i have no idea what to do.

I read on an older post here on the Forums that sometimes the computer won't even boot if you plug these connections the wrong way. Hoping to get a straight answer from someone reliable.

Thanks

I am sorry I am a noob but how will I be able to get into BIOS to change fan speed if there's a possibility the computer won't boot?

It should show something similar to that at the bottom of this message on-screen during boot..Then just press the key it says to enter BIOS..Then disable monitoring of the CPU_FAN header or put the low-limit to zero..It will revert every time you clear CMOS or put BIOS settings back to default.

And yes, if a motherboard has a pump header, that is where a pump or AIO gets connected to..It is configured by default to specifically run a pump and may also have a higher amp rating than a normal or CPU fan header does.

Welcome.