Apple iPod nano (3rd generation) Owner's Manual | Page 11

Chapter 1    iPod nano Basics

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Note:  The USB port on most keyboards doesn’t provide enough power. You must 
connect iPod nano to a USB 2.0 port on your computer, unless your keyboard has a 
high-powered USB 2.0 port.

By default, iTunes syncs songs on iPod nano automatically when you connect it to your 
computer. When iTunes is finished, you can disconnect iPod nano.

Note:  You can sync songs while your battery is charging.

If you connect iPod nano to a different computer and it’s set to sync music 
automatically, iTunes prompts you before syncing any music. If you click Yes, the songs 
and other audio files already on iPod nano will be erased and replaced with songs and 
other audio files on the computer iPod nano is connected to. For more information 
about adding music to iPod nano and using iPod nano with more than one computer, 
see Chapter 2, “Music Features,” on page 17.