the ASUS site has all the latest drivers
there's no harm in running the installation disk that they send with the motherboard
- you can always update a particular element of the BIOS at a later date,
- and you'd normally only do it if you absolutely needed to..
- the manual will explain how to install BIOS updates..
PS: BIOS updates don't happen that often, and they aren't issued automatically,
as they often only cure specific issues relating to hardward set-ups..
you would normally only consider updating the BIOS if the newer one solved a problem
particular to your set-up.. don't be tempted to experiment with BIOS settings you can wreck a computer, if you don't know exactly what you're doing..
the BIOS is not
one of those things that absolutely requires updating at all times..
you normally only do it if you really have to, and there's no other option to solve a particular issue..