AirPort Extreme Card, 20-inch iMac Replacement Instructions
This document provides step-by-step instructions for replacing the AirPort Extreme Card in an iMac G5 (20-inch). It details the necessary tools, safety precautions regarding static electricity, and the procedure to open the computer case. The guide explains how to remove the old card from its guide and install a new replacement unit.
You must use a Phillips #2 screwdriver to loosen the captive screws on the back cover.
Turn the middle screw counterclockwise about five revolutions to loosen it.
You must ground yourself by touching the metal surface inside the computer to discharge static electricity.