Use a coin to turn the battery locking screw 90 degrees to the right. Lift the battery out of the computer. /Guide/Repair/PowerBook-G4-Aluminum-12-Inch-1-1-5-GHz-Airport-Extreme-Card/541/all#s2569 Flip down the door on the right side of the battery compartment. /Guide/Repair/PowerBook-G4-Aluminum-12-Inch-1-1-5-GHz-Airport-Extreme-Card/541/all#s2574 Use a spudger or flathead screwdriver to disconnect the Airport antenna from the card. /Guide/Repair/PowerBook-G4-Aluminum-12-Inch-1-1-5-GHz-Airport-Extreme-Card/541/all#s2575 Grasp the plastic tab and pull the card out all the way. /Guide/Repair/PowerBook-G4-Aluminum-12-Inch-1-1-5-GHz-Airport-Extreme-Card/541/all#s2576