Diode 1141-4141 A system building block
The board is surrounded by an aluminum frame and a blue plastic connector. On one side there are neatly arranged components. On the back is a printed circuit.
Digital Equipment Corporation (DEC)
||Etched in solder at the insertion end of the board
||Stamped into the face of the aluminum frame
||Stamped into the side of the aluminum frame
overall: 1/4 in x 4 1/2 in x 7 in