Stamped into the front of the aluminum frame and etched in solder near the insertion end
Stamped into the side of the aluminum frame
overall: 1/2 in x 4 1/2 in x 7 in
Surrounding the board is an aluminum frame and a blue plastic connector. "1583 multiplexor (linc)" is etched in solder near the insertion end of the board. There are two inspection stamps on the component side of the board.