AirPort Extreme 802.11n Enabler... If you have a Mac with an Intel Core 2 Duo processor (except the 17-inch, 1.83GHz iMac) or a Mac Pro with AirPort Extreme, you can enable it to access an 802.11n wireless network using the AirPort Extreme 802.11n Enabler software.
Many Mac computers with an Intel Core 2 Duo and all Mac Pro computers with AirPort Extreme can be enabled to access 802.11n-based wireless networks. If you purchased one of these Macs, you can use the AirPort Extreme 802.11n Enabler software to activate this advanced wireless capability.
Important note: The Enabler is included free with the new