Dell Mobile Projector M900HD - Manual (Page 36)

How to set-up File Type for Multimedia with USB
NOTE: A USB flash disk must be plugged into the projector if you
want to use the multimedia USB 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 USB flash disk to your projector.
Using Your Projector 36