SEGA PART #171-6087A

4 Megabit PCB - Date 1991

I only have a few Game Gear games, but of those few the 4 Megabit games are found on this PCB.  These PCB's are interesting because it is a one-sided PCB, the backside is simply flat.  Since the Game Gear's pins are all up front, only one side of the PCB is printed and all contacts appear on the front.

The serial number is found on the upper left-hand corner, and the date is located on the upper-right hand corner.