Andrea, there's an existing thread on this topic already. But, replacing the card alone won't be enough. You would also have to swap out the antennae, as the ones in your machine aren't capable of providing the throughput that this card is capable on handling. Also, I would believe the firmware would have to be adjusted/updated in order for the card to function properly. In other words, the upgrade, even if it physically fits, won't provide you with any benefits as far as your Wifi performance goes.