[snip] Great pictures! (Once I figured out that I had to use IE vs. Firefox.) I had forgotten how huge those connectors are. It has been a very long time since I worked on the unit that our personal computer club at Recognition Equipment put together... Charlie Carothers -- -----REPLY----- Hi! Thanks! My hope is that this S-100 backplane will be a successful project and make available a tool that S-100 hobbyists can use to develop new peripherals and/or test and repair the ones they already have. The ideal persons for this prototype phase would be those with experience in building home brew S-100 systems and can identify and resolve issues with the backplane, suggest improvements, etc. There is very little S-100 development going on anymore so there appears to be a dearth of tools available such as backplanes, prototyping boards, power supplies, etc. Some new parts are needed, I think, for even the most basic repairs without using the legacy systems. Thanks and have a nice day! Andrew Lynch