Replacing new motherboard can't change csm option in bios

[Zwe]

How can I enable to change csm setting in bios. Asus prime h510m-k.
My hard disk and dvd drive weren't shown in boot priority.
But they show in storage information

 

[beers]

Why can’t I enable CSM on my new motherboard? | Scottie's Tech.Info

This is a fun one! You get a new motherboard with an Intel 500 Series chipset. You decide to just use the integrated graphics in the CPU, but you can't boot! It turns out your actual boot drive is missing from the Boot options menu. Gonzerooni! WTH?! UPDATE Nov 2023: Watch the video instead...

scottiestech.info