A:AnswerHello,
Backing up your tablet is not a function of the DUO Link device. You can only back up certain content (ie: locally stored pictures, contacts).
PNY Brand Champion
A:AnswerHello,
This device requires an iPad 4th Generation or better in order to function. You can view a list of compatible devices at http://www.pny.com/qr/duo-link/duo-link-otg-usb-3-0-flash-drive-for-iphone-ipad-la01 .
PNY Brand Champion
A:AnswerFiles/folders are date stamped according to when such files/folders were originally created or last modified. In this case if a file was copied to the external drive the timestamp of the file on the external drive would be the date and time it was added to that drive.