Opened mine up, checked the numbers, here's what I see:
Removed the metal "bay" for the drive, which requires two screws and all the screws holding the port cover on. Note the drive itself is not screwed down, it's held in by cushions and a small lip of the metal bay. Very secure, also very protected from shock.
Under there is:
REV 034AW MG93
HCD90 (Maybe H0D90)
On the board where the memory sits:
Anyone else locate information about this board. I'm mostly interested in USB possibilities, but any missing jumpers/switches we can add for overclocking and the like would be interesting.