Yes, you are right.. but I'm only trying to find a solution.. using m.2 some sata port are disabled..No (though you wouldn't be covered for any damge you cause), but I don't know why you'd want to. Slot 1 is PCIe 4.0 and 2&3 are PCIe 3.0, but you only have PCIe 3.0 SSDs, so it doesn't make a (significant) difference which slots they're in. (That is to say, it might make a measurable difference, but it won't make a perceptible one.)
Actually, m.2 on m.2_2 and m.2_3 disable sata_2-5-6.. so idk...
Now i have updated BIOS, no problem occured during installation but If i insert the HD i got the same problem.. i tried to switch xmp between I and II.. i tried to use a single cable for the HD..
I have 11th gen Intel so i can use m.2_1 (idk why they didn't used It)
Lol idk what to do 😅