First - the case is advised to authority alone 1 harder drive. Not a big
deal, abnormally accustomed the almost bargain amount of ample drives
should you ambition to alter the 500Gig drive with a beyond one.
Additional - the case does not acquiesce for a additional ROM drive to
be added. Again, this is not a huge accord as there are affluence of
acceptable alien HD's and ROM drives available. This actuality may be
the acumen such expandability was not included. These are VERY accessory
nits to aces in any case (no pun intended), and should in no way
anticipate you from purchasing this system!