when I put a microSD card in the tablet and use APP BACKUP, I get a password block and can not find a way to turn it off. I talked to sandisk about it, the said there cards are not password protected. I have sent several inquiries to ASUS and they said they never get it. Does anyone have a answer for this and can you guys check this on yours. You have to try and backup to micro card using APP BACKUP. Thanks.