I know when you are in charge mode you can touch the USB icon at the bottom and tell it to go into USB drive mode...but I don't see an "eject" or "switch to charge mode" icon when in USB drive mode. Yes, I realize one can just eject from the "my computer" menu...but it would be useful to be able to switch back and forth via the Pre/Pixi touchscreen. I don't see this option in the patches...is it possible? Am I missing something?