I have contact with a motivated seller who has a huge bunch of IBM Industrial systems to sell. They are Model 7587, and were used on the Kansas Turnpike to run printers and the like (maybe other stuff).
he has about 50 of the things and has them listed for $15 bucks, but is motivated to sell any / all. If anyone wants a nice AT system with 4 slots and power supply this would be one to get. It has a single board computer type system card in it, so I suspect the backplane is passive. I have a friend working on the full documentation, as he did sell them a long time ago. He said they were made for IBM by a company which also sold a lot of the stuff, Par (sp?) Contact me and I'll put you in direct contact with Ron. He is moving and has to get rid of them or trash them. I don't have room for them all or I'd store them and parcel them out of my warehouse. Ebay listing below has the information about them, but we can get them direct. If anyone has any ideas on the shipping charges, Ebay is screwing him horribly and help would be appreciated to get them shipped at a better rate. Thanks Jim http://www.ebay.com/itm/262750011708