AirMac Extreme has arrived!

I bought AirMac Extreme suddenly, and try Time machine with extended HD via Wi-fi. But I couldn't make the HD took over with previous backups. So I erase every data in the HD and format that to start Time Machine work.

My final goal using AirMac Extreme was set Time Machine up via network.

You can't hand over previous backups using via USB to via Wi-Fi.

You must set preference for AirPort Utility.

[AirPort Utility]>(Chose your AirPort Extreme)>[Manual Setup]>[Disks]>[File Sharing]>And chose "Secure Shared Disks" to [With AirPort Extreme password].