IBM Aptiva Handbook page 98

Moving the joystick port jumper
If you need to disable the joystick port on the Mwave
card, follow these steps:
1.
Locate the jumper labeled P10 on the Mwave card.
84 Chapter 7: Adding and removing adapter cards and drives
2.
Move the jumper from the enabled position to the
disabled position as shown in the picture.
Jumper
(Enabled)
If you had to remove the adapter card to access the
jumpers, reinstall the card.
Jumper
Pin
(Disabled)