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.
Date
January 28, 1964
Manufacturer
Digital Equipment Corporation (DEC)
Place Manufactured
Maynard, Mass.
Identifying Numbers
Model number
4519D
Printed on the solder side of the board near the insertion end