This is a modified NES Advantage NES-026 Joystick intended for use for IBM PC Game Ports. The DB 15 Male connector on the end is intentional for this exact reason. This is for vintage PC owners that want an arcade style controller for their computers. The turbo and slow functions actually work. The Player 1 and 2 switch is meaningless for IBM PC usage. This is handled by a 2 joystick Y cable sold separately. This modified joystick is compatible with MS-DOS, Windows 95, Windows 98, Windows 2000, Windows ME, and Windows XP. The resulting electronics modification is designed to be 100% compatible with MS DOS games expecting normal joysticks.
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