Dell Mobile Projector M900HD - Manual (Page 38)

How to set-up File Type for Multimedia with SD Card
NOTE: A SD card must be plugged into the projector if you want to
use the multimedia SD function.
Follow these steps to playback the Photo, Video, or Music files on your
projector:
1
Connect the power cable and turn on the projector by pressing the
power button.
2
Plug in a SD card to your projector. The image input source will be
automatically switched to SD screen when you plug in a SD card.
Using Your Projector 38