Casio XJ-A146 Function Manual page 22

Drive Menu
Entering the Presentation Mode, Slide Mode, or Movie Mode while there are multiple memory devices
connected to the Data Projector (multiple USB memory devices connected via a USB hub, multiple
memory cards loaded in the memory card reader connected to the Data Projector, etc.) will cause a
menu like the one shown below to appear on the projection screen.
When this happens, use the cursor keys to move the highlighting to the drive you want to use and then
press the [ENTER] key. This will display a menu of files for the mode you are entering.
Note
The Data Projector can recognize up to four drives.
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