What does the wall plugin mean
shows a plug and a wall outlet on screen
This icon appears on the screen during an update or restore that occurs when iPod is connected to the computer via a low or no-power connector. This can include some USB ports and 4-pin FireWire ports. When this appears, disconnect iPod from the computer and connect it to the power adapter. Then plug the power adapter into a power outlet. The update or restore will complete and iPod will restart to the main menu.