It has a 115 MB ESDI hard drive which "sounds" good, but no way of testing. I used to have 2 of these machines in the past, one with dual hard drives in it, so I can verify that the audible sounds are good. It also has a 5.25" drive connected to a board which also has that huge port for an external 5.25" drive. There are 2 RAM expansion cards installed, of unknown size. It has 1 3.5" drive but 2 3.5" bezels on the front of the case.
I think the power supply is good. I got good +5 (Red), +12 (Yellow), -12 (Purple), and GND (Black) readings off of it. Not sure what the skinny brown and orange wires are for, probably one is for the HDD activity indicator. They each read in the mV range.
This leads me to think that there's a problem on the motherboard somewhere, but again, I got this machine mainly for looks, so it's acceptable if it doesn't work. It would be cool to fix, but not worth much expense to me.