Serial to Parallel Assembler 4226 B system building block
Digital Equipment Corporation (DEC)
Printed on the solder side of the module
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 consists of a board with various active and passive components, surrounded by an aluminum frame and a blue plastic 22 pin male connector. There are three round inspection stamps on the component side.