Which iPod Do I Have?
Do you need to know which iPod you have?
There are many generations of iPods and it can be hard to know which one you have. It's important to know so you can understand compatibility with peripherals. In addition, it helps you know how to fix problems or choose a new machine.
The most helpful guide is one provided by Apple here. It has a full listing of available iPods and easy ways to identify your own model in the catalog.