Unplug your iMac's AC cord along with any peripheral devices.

Lay your iMac face-down on a soft, clean surface as shown.

Be sure there isn't any dirt or debris on your work surface, as it may scratch the glass panel on the front of your iMac. We recommend placing a towel between the iMac and the work surface.

Loosen the three Phillips screws securing the access door to the bottom edge of your iMac.

All three screws will remain captive in the access door.

Remove the access door.