Having trouble detecting an AirPort network for your Power Mac G5, even though you're within range?
You need this AirPort antenna connected to the rear of your computer for it to properly connect.
Although it comes included in your purchase of the Power Mac G5, many people seem to lose it because it's such a small part! At YourMacStore.com, this little piece is actually our 4th best-selling item @ just $24.95. Apple no longer sells them.