Originally I had a goal to have RGB output capability from all my consoles. This eventually led me to developing a new RGB mod for the Turbografx 16 and PC Engine. Since the expansion port has all the necessary A/V pins available, I decided to make a thin PCB that could be soldered directly over the pins on the solder side of the motherboard. This eliminates the need to make the input R, G, B, CS, 5v, and ground connections with wires and simplifies the installation.