Can I use a HG635 Business router for home broadband?

Hi

My TT supplied router HG633 has (I believe) 100 mbps Ethernet connections.

my friend has offered a HG635 which  apparently has gigabit Ethernet, which will make my NAS more effective.

is it possible to use this HG635 router at home (with a firmware update??) or is it strictly for business only?

thanks in advance.