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 on one side. On one side there are several wires attached to the aluminum frame with a bolt. 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. There is a green quality control sticker on the side of the frame near the serial number.