thats a removable cage that holds the floppy drive and harddrive. it's the standard prometeia case.
that little disk is my kill it all disk.
that disc will kill all information on any hard drive, in a matter of 3 seconds, in 2 steps.
insert, and reboot.
after that it takes about 3 seconds for it to wipe all information of a hard drive, even my information salvaging programs don't work after using this disk.
very handy when killing all the crap on windows, without windows always trying to leave it's footprint on the hard drive even when you think it's cleaned.