This is a circuit board with a printed copper circuit. At one end is a blue plastic pinned interface with a hinged clip. "HI. PHYSIKALISCHES INSTITUT LEHRSTUHL B T.H. AACHEN" is printed in copper to the lower right of the clip.The letter "G" is printed in red three times.On the reverse side are soldered joints which attach the pins on the obverse face to the copper circuits on the reverse side. "Cable Connector card" is printed at the top left edge of the board.