Do you have a question about the Apple iMac G5 AirPort Extreme Card, 17-inch and is the answer not in the manual?
Power down, disconnect cables, and place iMac face down on a soft surface for safety.
Locate and loosen captive screws, then lift the back cover off the computer.
Ground yourself by touching metal to prevent component damage from static electricity.
Locate the AirPort card, disconnect antenna cable, and pull tab to remove from guide.
Remove replacement card, slide into guide until it clicks, and ensure it is flush.
Reconnect the antenna cable to the newly installed AirPort Extreme card.
Align the back cover slots with display housing tabs, press firmly, and tighten screws.
Reconnect the power cord, position the iMac upright, and power it on.