Original Apple Airport Card eMac/iMac/iBook G3/G4 Wireless WiFi 802.11b Card PC24-H

Part #600-9236 (although it appears this can vary, it the one you need looks the same your OK)

Carefully tested, not just guaranteed.
Picture exemplifies what these look like. At times there are smudges, such as sticker residue on the bottoms, but rest assumed I made sure they work.

Its important to realize that the newer modems provided by Internet Providers, do not support this older card.
If you have that problem, you can get around that limitation (and that is how I personally test them) by using and Apple Airport ("Time Capsule" or "Express" versions) which is often inexpensive to purchase. https://en.wikipedia.org/wiki/AirPort

A customer has informed me, that while Tiger OS recognized and controlled this card, Leopard OS did not.

This cleaver customer also sent me the following concerning how he got around the newer modem incompatibility problem:
"The issue is, wep vs wpa. I created a guest hidden network with no security standard and it works.  With the types of routers that I have here, it is all I can do."

Shipping includes Tracking and Delivery Confirmation, and usually occurs within one business day.