Power Your iPod
All iPods require power. Fortunately, each iPod also comes with a battery and a way of charging it (powering it), either directly from your computer or by using a cable and an AC power adapter that works in North America and many parts of Europe and Asia. Keep the following points in mind:
Fifth- and sixth-generation iPod models (including the iPod touch) and the iPhone — as well as iPod nano, iPod mini, and third- and fourth-generation iPods — offer a dock connection. You can connect these models to a dock that offers USB 2.0 connections for power and synchronizing (or FireWire for third-generation models). Docks for full-size iPods can also connect to your home stereo through a line-out connection.
Sixth-generation iPods and iPod nanos are supplied with a cable that has a USB connector on one end and a flat dock connector on the other end to connect to a dock or to an iPod itself. You can connect the USB end to either the Apple power supply or the computer’s USB 2.0 port. The iPhone is also supplied with a USB cable for connecting the iPhone or its dock to your computer or to the power supply.
The connection on the bottom of the iPod or iPhone is the same as the connection on the back of the iPod or iPhone dock. To connect your iPod or iPhone to your computer, plug the flat connector of the cable into the device or dock, and then plug the USB connector on the other end into the USB port on your computer.
Most PCs already have USB 2.0, which is all you need to provide power to your sixth-generation iPod, iPod shuffle, or iPod nano, and to synchronize it with your PC. Although you can use a low-powered USB 1.0 or 1.1 connection, it doesn’t supply power to most iPod models.