HP 1000 cmoputer (parts maybe)

I finally got a few photos of the HP 1000 that I bought a couple of months ago. any opinions on what I have, and what steps should be taken before trying to do anything with it? It appeared to have had a Tandberg tape drive attached at some time. the cables connected to the back of each card have all been cut by the scrapper that had it before I did. There sounds to be at least one small part (screw, nut, broken plastic) rattling around inside the front area, so it will have to be opened no matter what. There was an empty slot a the top of this, so I may be out anything useful, it may be a junk spare cage with a bunch of I/O if I had to guess. At least I didn't out a lot for it. I have to admit I was seduced by the switches and lights that appeared to be on the front panel, and an obvious need to fill some space in my pile with something. It appears to have a battery pack that was the rear panel. Due to the construction, I wonder if it was added by a system integrator. thanks Jim http://jwstephens.com/hp-1000/page_01.htm