Dell S510 Interactive Projector - Manual (Page 101)

Using Your Projector 101
USB Display (DoUSB) Installation
For Windows Operating System
1 Connect the power cable and press the power button.
2 Connect the USB (type A to B) cable to the projector and the
computer.
3 When you connect the projector and computer via USB cable, a USB
Connected message will pop up and allow you to select DoUSB or
Storage Mode. Select “DoUSB” option to switch to the USB Display
source.
NOTE: If the DoUSB can't display, please see "Troubleshooting Your
Projector" on page 133.