Dell S520 Guide D'installation page 7

Part D: Connect Necessary
Cables
4 Connect power, video, Mini USB, and DC-
to-DC cables to the projector.
5 Connect the power cable to the power
outlet.
6 Connect the DC-to-DC cable to the laser
curtain kit.
Set Up Laser Touch on Your Projector
2m DC-to-DC cable
5