What does Display Emulator / Dummy Plug do?Sep 29,2021 DTECH Dummy HDMI Emulator 4K Display Window Mac OSX Linux Hdmi Dummy Plug Previous DTECH high quality HDCP 2.2 AOC HDMI 2.0V active optical fiber cableNext DTECH factory price 1080p male to female audio and video converter adapter HDMI to VGA cable