RK54-1 Hammer driver module
||Printed on the extraction handle
||Stamped on the solder side at the extraction end
||Stamped on paper label on extractor handle, under label indicating module is non-functional
overall: 1/2 in x 6 in x 5 5/8 in
"Hammer driver" is printed on the front of the module in white. There are three high current power transistors on the component side.
Courtesy of Carnegie Mellon University