How to Install / Replace your APPLE MC227LL/A Keyboard?

1. Turn off your laptop. Disconnect the AC adapter and any cables, then remove the battery. Turn the laptop over and let it cool off for a few minutes before you begin.
2. On the underside of the notebook, you'll find screws holding the keyboard and palm rest in place. Set the screws aside, and be sure to keep track of them all.
3. Turn it over and open the Lid. Slide your fingers under the top of the palm rest and gently pull it up, moving from the center to the outer left and right edges. Leaving the fingerprint reader attached, place the palm rest down in front of the unit.
4. Lift the damaged APPLE MC227LL/A Keyboard up from the front, then pull it toward you to release it from the notebook's frame. Pull up on the connector to detach.
5. Attach the new APPLE MC227LL/A Keyboard replacement's connector. Position it over the space vacated by the old connector, and press down firmly until it snaps into place. Slide the top of the keyboard under the lip of the frame (near the display). Ensure that the top edges are just under the frame. Tilt the keyboard down until it lays flat and sits flush with the top, left, and right edges of the frame.
6. Align the bottom edge of the palm rest along the base of the frame, then press down until the top is also in place. Press firmly on the left and right edges to snap the palm rest into place again.
7. Close the Lid, and turn the notebook over. Replace all the screws, making sure to tighten them securely. Insert the battery, plug in your AC adapter, and enjoy your new keyboard.