File Manager allows you to easily locate and manage your data either on the
internal storage device or the connected external storage devices.
To access the internal storage:
Tap on the top right corner of the Home Screen to access tablet utilities.
In the Apps menu, tap on File Manager to go into My Storage.
The Internal Storage (/sdcard/) and any connected external storage
devices (/Removable/) are displayed on the left panel. Tap on the source
icon on the left panel to display content list. Select a source by tapping
to view the content.
ASUS Transformer Manual