The module consists of a printed circuit board with various components, surrounded by an aluminum frame and Blue plasic 22 pin connector. At the end of the board opposite the connector there is a single toggle switch.
Date
1965 ca.
Manufacturer
Digital Equipment Corporation (DEC)
Identifying Numbers
Model number
4703C
Printed on the solder side of the board
Other number
4703
Stamped into the front of the aluminum frame and hand written on the side