This is an Apple Airport Wireless Networking Card that allows for a wireless internet connection. Works in any Airport-ready powerbook or iBook. This does not work in the Lombard G3 or Wallstreet G3. (A wireless base station or router is required in addition to the card to enable airport networking.) Apple has discontinued this product, and these cards are increasingly more difficult to find. These cards in stock and used pulls from working machines and come with our standard one year warranty.