Thanks for getting back with me and the links.  This PC was a normal desktop at a comp[any I am very familiar with.  Thanks to the second link you provided I now know the system will accept up to 128MB of memory.  If at all possible I would still like to find the manual(s) and downloads for your more recent systems (if possible).

Unfortunately this system may predate Dell's use of Service Tags.  The only tag, inside or out of the system, is the serial number 6VN7R.  I checked the BIOS and the there isn't a service tag there either.

It should have a Service Tag # on a sticker. Use that if you can.

Looks like it may be custom PC used inside specialized equipment.

https://www.ebay.com/itm/Dell-OptiPlex-GL-5100-Desktop-System-Computer-Plasma-Therm-Clusterlock-As-Is-/143241526063

more info :http://www.computer-specifications.com/specifications/Dell-OptiPlexGLGMGMT5100-Specs.html

GL 5100 is original PENTUM PC 100Mhz

So dos and windows 3.1 is all you get.

Nothing online is still available for a system that old.

https://en.wikipedia.org/wiki/Socket_5

Drivers seem to still be online

http://downloads.dell.com/published/pages/optiplex-glplus.html

Hello Speedstep,

Thanks for that!  That's almost everything that I am after.  Now, if I could find the corresponding manual I believe I would have everything.

Thanks again

Optiplex GL 5100 Manual.pdf 

Bradthetechnut,

Thanks but that link takes me to a page with a mirror link which runs through a series of urls that end up asking me to install a flash update.

Thanks for the feedback.  Sorry about that.  Having so many manuals and tech guides already, I didn't try downloading the manual for myself.  Didn't think it would be something I'd use again.

Searching again, I didn't find anything that didn't run me through useless loops and hoops.  Nothing on ebay either except for the actual computer.

Bradthetechnut,

I appreciate you looking.  I have just about everything I need BUT I can't get the system to recognize the CDROM drive.  It's an era appropriate BIOS that asks for IDE drive settings which I may find in a manual should I ever find one.

@Brad your link goes to MALWARE

DO NOT CLICK THAT LINK ITS MALWARE.