How to install AirPort Extreme card in eMac?

Apparently your extreme card is the correct card for your eMac.

*AirPort Extreme Card: Compatible Macintosh computers*
http://support.apple.com/kb/HT3024

Here's the instructions for installing. *eMac: How to Install or Replace an Optional AirPort Card*
http://support.apple.com/kb/HT2596

 Cheers, Tom 😉

Numerous eMac users who installed Airport Extreme cards in the past have brought up that the Extreme card is a very tight fit in the eMac Airport slot, especially compared to the original Airport card. Often, the card appears to be fully seated, but is actually some fraction of a millimeter out. After seating the card according to all the instructions, you have to push hard on the edge of the card to get it to really seat all the way, hard enough to just start to push the 50-lb eMac away from you (don't try this with the eMac on the very edge of the table or desk!). I ran into exactly that putting an Extreme card in my in-law's eMac, and I had already read other's warnings; that may give you some idea how firmly you really need to push the card once it feels as if it's seated.