So I got a 20 inch ACD. When you get it there are 3 connecters coming out of the same tube that connects to the ac dc port. One DVI one firewire and one usb. What are the firwire and the USB for?? Also the ports on the back of the monitor (2 usb and 2 firewire) I don't really get them either. you can't connect a printer or a mouse or anything to them if you want to use them with a computer you have to connect those items directly to the computer(i'm using it with a powerbook). And in a way i kind of understand it. So i connectd an ipod mini to the usb port on the back of the monitor, just to power it up, not even to load music. It doesn't even do that. So what are these ports for exactly.