I am currently using a Pioneer FH-P800BT cd receiver and have a 250GB Western Digital hard drive hooked up to the usb port on the receiver (the HD is powered by an ipod charger). It works like a charm. I want to upgrade to a AVIC-Z110BT or a AVIC-X910BT. I know they haven't been released yet, but is it possible to use my usb setup with a AVIC receiver? Any help would be appreciated.