The Cisco 4400 Series Wireless LAN Controllers has been retired and is no longer supported.
End-of-Sale Date: 2011-06-13
End-of-Support Date: 2016-06-30
Cisco's End-of-Life Policy
You can view a listing of available Wireless LAN Controller offerings that best meet your specific needs
If you want support information for the Cisco 4400 Series Wireless LAN Controllers documentation, it may be available through Cisco.com Search or in the Cisco Community