Pin 1: Mouse Vertical Pin 1: Unused
Pin 2: Mouse Horizontal Pin 2: Unused
Pin 3: Mouse Vertical Quadrature Pin 3: Unused
Pin 4: Mouse Horizontal Quadrature Pin
4: Unused
Pin 5: Mouse Button 3 (Middle) Pin 5: Light Pen Press
Pin 6: Mouse Button 1 (Left) Pin 6: *Light Pen (Capture Beam Pos)
Pin 7: +5V (50 mA maximum.) Pin 7: +5V (50 mA maximum.)
Pin 8: Ground Pin 8: Ground
Pin 9: Mouse Button 2 (Right) Pin 9: Unused
Digital Joystick: Analog (Proportional) Joystick:
Pin 1: *Forward Pin 1: Button 3
Pin 2: *Back Pin 2: Unused
Pin 3: *Left Pin 3: Button 1
Pin 4: *Right Pin 4: Button 2
Pin 5: Unused Pin 5: Pot X (Horizontal Control)
Pin 6: *Fire Pin 6: Unused
Pin 7: +5V (50 mA maximum.) Pin 7: +5V (50 mA maximum.)
Pin 8: Ground Pin 8: Ground
Pin 9: Fire Button 2 Pin 9: Pot Y (Vertical Control)