Yesterday I picked up two shoebox sized units that were marked as "enviromental units". However they had lights marked Tx, Rx, etc and a Comm port. Inside it had a STD bus chassis with three cards installed. On has a 80C31 CPU, one has a Zilog Z0853004 comm chip and the other has a MAXIM ICL7109CPL A/D convertor. The first two cards appear to be custom made and are probably useless for anything except the system they were designed for. However the third card (with A/D) is a standard commercail product and was made by WinSystems and is their model LPM/MCM-7109. Does anyone have any data on this card? It's not on WinSystems website and I tried to contact them and ask about it but they were less than cooperative. Joe