Printed on the solder side of the board near the insertion end
Stamped into the face of the aluminum frame
Stamped into the side of the aluminum frame
overall: 1/2 in x 4 1/2 in x 7 in
The module has various components and wires on one side. The board is surrounded by an aluminum frame and a blue plastic 22 pin male connector. "DRUM Y SELECT 4522 B" is printed at the insertion end above the grid lettered A-Z.