Stamped on the component side at the insertion end
Printed on the solder side as well as on the component side at the insertion end
overall: 1/2 in x 5 1/2 in x 4 5/8 in
Standard Modular System (SMS) card of unknown function. There are discrete transistors and other components on half the board. There are two of these modules. On one there is an opaque cover over the components. The model number 5300022 is printed in solder on each of these modules.