Hi Kevin: I don't know if the configuration of the memory is unique in Mitacs , but I saw the exact same 40 pin socket on a Zenith 286 SuperSport, accompanied by a set of dip switches. I never bothered trying to upgrade it, though I did find suppliers for the memory upgrade. As far as an adapter, it is doubtful that anyone would have bothered to design an adapter, due to case space and RAM addressing limits. Oh, and the price on the memory upgrade for the Zenith was about $45US, to upgrade from 1MB to 2MB, about 1.5 years ago. Hope this helps. Kim Hillyer Kevin Flood wrote: > Hello > > I have an old 386 <snip> simm 1 with 40 holes rather than the > normal slots. > <snip> prop[rietary] to Mitac or can I use something else or an adapter for > .<snip>