Please follow the instructions below.
1.  Place the projector on a flat surface and make sure you can see the speaker and the strap clearly in front of you so that the strap is on your right hand side.
2. Slide open the cover and install the HDMI media steaming dongle (QS01).
3. To view a demonstration of these instructions, please refer to the installation video below:
https://www.benq.com/en-us/support/downloads-faq/faq/pre-sales/peripherals/how-to-install-atv-dongle-on-gv11.html