8 Unbuffered Flip Flops 4227B system building block
Digital Equipment Corporation (DEC)
Printed on the solder side of the board
Stamped into the front of the aluminum frame
overall: 1/2 in x 4 1/2 in x 7 in
The module is covered in various active and passive components, which are surrounded by an aluminum frame and blue plastic 22 pin male plastic connector. On the component side there are three round inspection stamps. The solder side has a grid lettered A-Z.