8Position the AirPort Card with the AirPort ID numbers and bar code visible and slide the card into the connector. Make sure to slide the card all the way in until you feel that the card is securely attached to the connector.
AirPort Card
9Connect the AirPort Card to the end of the antenna cable. Make sure that the connector on the end of the antenna cable is straight before inserting it into the card. When it is connected, make sure the end of the antenna cable is secured by the small clip shown in the illustration below.
Antenna clip
10Fold the plastic tab on the AirPort Card over the top of the card.
Important The plastic tab must be folded over the card. If the tab is not folded over, you will not be able to securely attach the bottom case to the computer.