thank you for your reply.
I'm aware of the manuals in this page. the bios information included in them is very minimal.
I'm looking for a more detailed bios manual that includes all/most bios configuration options.
Didn't realise until I just looked in BIOS section --- very little info there.
Most mobo manuals I've seen have a much more comprehensive BIOS section.
May be the settings are explained in the UEFI interface ?