Take the front plate off -- you'll need a torx bit. (Also note that the faceplate slides straight up, then straight out. You might damage something if you're really adamant about pulling it off sideways, or straight out before you lift up on it.) Each power supply has two screws holding it in (torx again). You'll also need to remove the drive cage above the PSU before you pull the power supply out. (two more torx screws, near the top of the cage) I think they're probably both the same, so only one should need removed. Once you get a PSU out (you shouldn't even need to pull it out all the way...), look right in the front of the PSU, to the right. I think that's the battery compartment. Mine is just empty with a two-prong plug that I assume should plug into the battery. Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '