Object is a brown box terminating in an edge connector. On the box is a screw driver selectable address from 0 to 15. At the other end is a 177 inch cable terminated in a round 48-pin connector. Handwritten white lablels read "IRL 19-2540 MED.-ANALYTIC", "UNIT #5 / RECD. 3/7/80" and "JUMPERS: 4, 9, B, D, F", and "IR .