I have a garmin nuvi 1300 and i want to hook it up to my car's usb port instead of the cig lighter. But every time i do it my device goes into mass storage mode like i am plugging it in to my computer. Is there a way to disable this, i understand that i may need to go into the device files or something but there must be some work around. I don't think i am the only one who wants their device hooked up like this. Anyways if anyone could help or has an idea please share. Thank you.