This unit consists of a cable with an aluminum breadboard box at one end and paddle board meant to plug into a backplane at the other. There is a circuit board inside the box and a half board as a connector at the other end of the cable. Both boards appear to be the standard type board for the IBM Stretch computer.
Identifying Numbers
Other number
589-61000
On a black Dymo label affixed to one side of the silver box.
Other number
7030
Handwritten in black marker on side of silver box.
Part number
5230780
Handwritten in black marker on side of silver box.
Dimensions
cable only: 2 5/8 in x 3/8 in x 466 in; overall: 2 1/8 in x 5 in x 7 in