You can switch the projector's display to the source you
connected to one of the USB-A ports. To display the connected
USB device, select the USB1
source.
Note: If you
have connected a document camera, select the USB2 source.
Make sure the connected USB source is turned on, if
necessary.
Press the USB button on the remote
control.
Press the button again to cycle through other USB sources,
if available.