Which ever way your mother board manual or computer instruction manual tells
you to. Look up the information. We have no idea what computer you have -
nor do we know what motherboard is installed!
Only you know what motherboard and BIOS you have, so only you know
the answer to your question. ;-}
In the extremely unlikely event that your PC's manual or the
motherboard manufacturer's web site doesn't contain the needed
information, try one or more of the following: