The Mac mini comes with only one FireWire connection and Two USB connections. What I wanted to do is store all my music and office files on an external HD but my iPod will be connected to the FireWire. So now I don't know if I should use the FireWire connection for the external HD or iPod. Or just dump the idea of a external HD. But I read on the site it's good to back your system up and also that the FireWire connection for the HD is better then USB.