2001 iPod (1st gen)
> 5GB/10GB storage, mechanical scroll wheel and FireWire
2002 iPod (2nd gen)
> 10GB/20GB storage, touch sensitive wheel and PC compatibility
2003 iPod (3rd gen)
> 10/15/20/30/40GB, all-touch controls, dock connector
2004 iPod mini
> 4GB, USB/FireWire, click wheel controller
2004 iPod (4th gen)
> 30/40/60GB or 20/60GB with colour display, FireWire or USB
2004 iPod photo
> 4th gen spin-off, colour screen, pic viewing. 40/60GB, FireWire or USB
2004 U2 iPod
> Limited edition black iPod with red click wheel, autographs and 20GB
2005 iPod shuffle (1st gen)
> Flash! Aah-aah! 512MB/1GB, USB, no screen
2005 iPod mini (2nd gen)
> 4/6GB, more colours and longer battery life
2005 iPod nano (1st gen)
> 1/2/4GB, USB (FireWire for charging only), colour display
2005 iPod (5th gen)
> 30/60/80GB, USB (FireWire for charging only), larger screen
2005 U2…
