Go to System Preferences and click on "Time Machine". Click on "Change Disk", and a window like this

will appear showing you all the connecting drives that you can use for backup - including wireless ones.
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With up to 5 times the power and 2 times the range, it can't get much better, but Apple also included 802.11n and expanded connectivity to allow up to 10 Mac and PC users on the network at a time. Although Apple changed a lot on the inside of the device, the design has not changed at all. It is still a mere $99.00, and is compatible with Airport Utility, the wireless network managing tool Apple provides with all Macs in /Applications/Utilities/Airport Utility.
. Airtunes allows you to play your iTunes music on your stereo or speakers wirelessly. The available speakers are shown in iTunes in the bottom-right corner. Simply click the arrows and select the speakers you want!
