Can I use both USB ports on the back of my AVIC 8000nex?  My truck has one in the console and one I am adding for dash.  Can I just hook one to each of the ports in the back so I can charge two phones/ipads at once?  Manual said something about iphones only using USB1.

You can use both usb ports, as i have one going to dash and other hooked up to solid state drive. usb1 is for iPhone functionality, usb2 for android or other use. My usb1 is in dash for my iPhone, usb2 is in glove compartment.  phone will charge only when ignition is on.