Verify system requirements
First, make sure your computer has the following:
And one of these operating systems:
- Mac OS X version 10.5.8 or later
- Windows XP Home or Professional with Service Pack 3 or later
- Windows Vista
- Windows 7
Check USB connections
Connect iPod nano to a USB port that is built into the computer instead of the keyboard or an external USB hub.
If iPod nano still doesn't appear in iTunes:
If iPod nano doesn't appear in iTunes after the computer wakes from sleep, try disconnecting and reconnecting the iPod to the USB sync cable.