"The port design on the third generation is almost identical to the second generation link cable ports except that it adds an extra protrusion on the plug and a notch on the socket to prevent a Game Boy Advance Game Link cable from being accidentally inserted into older model Game Boy systems. The almost identical shape of the port allows the Game Boy Advance, Game Boy Advance SP and Game Boy Player to accept all the second generation Game Link Cables, but only for backward compatibility between Game Boy and Game Boy Color games. The second generation Game Link cable cannot be used to link Game Boy Advance games, and the third generation Game Link Cable cannot be used to link Game Boy or Game Boy Color games."