EXP Computer CDG-821 - Manual (Page 27)

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9. Click “OK” when finishing, system may ask you to reboot the
computer to enable the new settings
Remove or re-install the driver
If you want to remove, re-install or upgrade the driver you have installed,
you need to remove the old driver first which can be done by highlighting
the EXP device driver under “Device Manager”, then click at “Remove”
button.
Game Port Problems
If you are experiencing the problem with the Game Port, be sure
1. The I/O 200-207 is available on your system, if not, please contact
the system manufacturer for supports.
2. No pre-installed “Gameport Joystick” driver on your system,
otherwise you need to remove the pre-installed “Gameport Joystick”
driver which is under the Device Manager’s “Sound video and game
controllers” device list.
3. The game-pad(or joystick) connected firmly to the game port.