This module consists of a single-sided circuit board mounted in a blue metal frame with an 18-pin connector on one end. At the other end there is a clear plastic extractor handle with two color coding bands, which are yellow and red starting with the band closest to the side of the unit. Components are mounted on the outer-facing side of both boards, and include resistors, capacitors, diodes, and transistors.
Massachusetts Institute of Technology (MIT)
Printed with solder at the extraction end of the circuit board.