Dual cable theory
Here's my only guess on the dual USB/Firewire cable: it's for the iPod.
Think how much the iPod would sell if it supported USB (2.0 hopefully) and not just Firewire? (And Apple could still claim that FW is faster--even FW400 tests faster then USB 2.0.)
If my guess is right, then the other end of that cable will get a custom connector that may look like Firewire but is actually a custom connector for new iPods, and carries USB as well.
This cable might only be bundled with Windows iPods--but pre-Firewire iMacs, bronze PowerBooks, and iBooks all have USB and would be a market as well.
Why not just make a custom cable just for the USB, and ship two cables with the iPod? Maybe this is cheaper, or just simpler for the user.
Here's my only guess on the dual USB/Firewire cable: it's for the iPod.
Think how much the iPod would sell if it supported USB (2.0 hopefully) and not just Firewire? (And Apple could still claim that FW is faster--even FW400 tests faster then USB 2.0.)
If my guess is right, then the other end of that cable will get a custom connector that may look like Firewire but is actually a custom connector for new iPods, and carries USB as well.
This cable might only be bundled with Windows iPods--but pre-Firewire iMacs, bronze PowerBooks, and iBooks all have USB and would be a market as well.
Why not just make a custom cable just for the USB, and ship two cables with the iPod? Maybe this is cheaper, or just simpler for the user.