iPod Classic: Overview



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iPod (Scroll Wheel)iPod (Scroll Wheel) models have a scroll wheel that physically turns. The controls (Play, Menu, Next, Previous) are in a circle around the wheel. iPod (Scroll Wheel) models are referred to as first-generation iPod models.
iPod (Touch Wheel)All iPod (Touch Wheel) models have a FireWire port cover. Scroll wheel models don't, and dock connector models don't have a FireWire port. The iPod (Touch Wheel) model controls look similar to the iPod (Scroll Wheel) but the touch wheel itself doesn't turn. iPod (Touch Wheel) models are considered second-generation iPod models.
iPod (Dock Connector)iPod (dock connector) models have a dock connector on the bottom. Newer iPod models like iPod (Click Wheel) and iPod mini also have a dock connector, but the iPod (Dock Connector) has a touch wheel instead of a Click Wheel and the four control buttons are above the touch wheel. iPod (Dock Connector) models are referred to as third-generation iPod models.
iPod (Photo)iPod photo models are functionally and visually identical to the iPod with color display.
iPod (Click Wheel)iPod (Click Wheel) models have a Click Wheel like the iPod mini, but are larger and the hold switch is on the top-right side. iPod (Click Wheel) models have a monochrome display. iPod (Click Wheel) is referred to as the fourth-generation iPod.
iPod (Special Edition U2)The iPod Special Edition U2 is a standard iPod model with some differences, including: Black plastic exterior, red Click Wheel, signatures of the U2 band members engraved on the back, and "iPod Special Edition U2" engraved on the back. The first model was based on an iPod (Click Wheel) with a 20 GB hard drive. In June 2005, a new version of the iPod Special Edition U2 was introduced that was based on an iPod with color display. These are both also considered fourth-generation iPod models. In June 2006, a new version of the iPod Special Edition U2 was introduced that is based on a 5th-generation iPod (also known as iPod with video) with a 30 GB hard drive. In September 2006, a model based on the iPod (5th generation Late 2006) was introduced.
iPod (Color)iPod and iPod photo are now one and the same, with every white iPod boasting a full-color display. They continue to have the same controls as iPod (Click Wheel) but now all models have a color display like iPod photo—ideal for viewing album artwork and playing slideshows. These are considered fourth-generation models along with iPod (Click Wheel).
iPod (Video)The iPod (5th generation) is a hard drive-based iPod featuring a large, widescreen color display, a Click Wheel, and the capability of displaying photos and videos. It uses USB for syncing.
iPod (Video; Late)Similar to the iPod (Video), only differs in capacity offer.
iPod (Classic)The iPod classic is a hard drive-based iPod featuring a large, widescreen color display, a Click Wheel, and the capability of displaying photos and videos. It uses USB for syncing.
iPod (Classic 120 GB)The iPod classic (120 GB) is a hard drive-based iPod featuring a large, widescreen color display, a Click Wheel, and the capability of displaying photos and videos. It uses USB for syncing.
iPod (Classic 160 GB)The iPod classic 160 GB (Late 2009) is a hard drive-based iPod featuring a large, widescreen color display, a Click Wheel, and the capability of displaying photos and videos. It uses USB for syncing.

Source: Apple.



Source: Apple.