you connected your computer to a Computer or HDMI
port on the projector, you also need to connect the USB cable so
you can use the pens with your computer.
Connecting the USB cable also lets you set up the remote control
to act as a wireless mouse, but you cannot use this feature at the
same time you are using the pens with your computer.
want to use the remote control as a wireless mouse, you need to
change the USB Type B
setting in the
projector's Extended menu. You may also need to configure your
computer to work with an external USB mouse. See your computer
documentation for details.