I have something very similar (if not identical) to the black box with white top and metal toggle switches. Mine is a microprogrammer (as visible on the picture) LCM-1001. I have nothing to plug into the expansion socket but do have a paperback book containing diagrams similar to those on the cover of the hardback book shown in the picture. It might be the same book in paperback - I'll have to check. My microprogrammer still works happily on its original NiCads - not bad for something over twenty years old. I still have the original box. Also have the mains adapter/charger. Doug.