First off, sorry for so many questions. I am a total noob at this. I am trying to learn so I can maybe help out someone else who is in the same boat some day. Anyway, I am trying to add movies to my device. I have them on a thumb drive. When I plug it into the usb port, it says preparing memory device, then it says safe to remove and it will not show up in the file manager. Can I not have the micro sd card in (which is a 4gig card, I am assuming this is the only one since it came already slotted in the outer tf slot) and plug in a thumb drive at the same time? Thanks so much for helping with this.