Make your beamer a smart beamer with the Optoma HDCast Pro. Plug the dongle into an HDMI port of your projector and stream wirelessly picture and sound from a smartphone, tablet or laptop. You can thus duplicate the screen of a mobile device on the big screen or show a presentation without any hassle with cables. Via the dongle you have access to DLNA, with which you open files on a computer or NAS in a network. This way you can easily send presentations, films and photos to your beamer.