XBOX 360 down to the motherboard

We are busy this week. We bought a couple of XBOX 360s. We are tearing them down to see how they are built and how they operate. We took this one down to the motherboard and put it back together. It started back up fine and there were no extra screws....AMAZING! These have a 20 gig serial ATA drive that you can add to the core unit. Of course, we have to figure out how the games work too!