I may be missing something obvious, but I'm trying to determine if the Airport Extreme card in my Mac Pro is 802.11n or the older 802.11g. Long story short, my original system was bought in May 2007, but in the last week was completely replaced due to an issue that Apple couldn't resolve after a month of having my system. When they built the new one, they failed to put in an Airport card like my original system had, so I had them send someone to my house to install it for me. In System Profiler, it says this about the card: Broadcom BCM43xx 1.0 (22.214.171.124) I've tried a Google search but don't seem to be really getting any solid hits and can't seem to figure out what protocol my Airport card uses. Is there something in the OS that directly tells me, or is there something else I can use to find out?