I modified the small metal part that holds the little plastic cone that I assume is for putting out cigarettes. I removed the cone, pulled the metal piece out and flattened out the long side that hangs down on the right side. Pounded the bend flat then cut a hole for the USB port. Cut off part of the extra metal that was hanging out after installing the port. Drilled a hole in the bottom of the ash tray and fed the wires through the dash and up into the glove box to plug into the usb ports for the Avin Avant 4 unit. I'm loving the Avin unit, by the way.