Integrating One-Shot 4303D system building block
Digital Equipment Corporation (DEC)
||Printed on the solder side of the module 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 7 in x 4 1/2 in
The board is covered with various active and passive components, which are surrounded by an aluminum frame and blue plastic 22 pin male connector.