Adding 802.11n Into Your Macbook

According to Apple, all of their current machines are compatible with their new 802.11n wireless hardware. The guys at MacBidouille wanted to know if they could get it functioning in their early rev macbook core duo. They ganged a new card from a MacPro and got busy.Things came out ridiculously easily, with a simple hardware swap. Considering that the pci connector is the same, I wonder if any portable with an airport extreme card could be upgraded (with an additional antenna)