AirPort Utility 6.1 for Mac
AirPort Utility 6.1 allows you to configure and manage the new AirPort Express with simultaneous dual band 802.11n. It also allows you to configure the base stations for IPv6 and includes additional bug fixes.
For the latest information on AirPort software, check Software Update in System Preferences or the following Apple website: Apple Support Downloads.
Learn more about Apple Wi-Fi at: http://www.apple.com/wifi/.