A monitor with an HDMI or VGI port for a wired connection. A VGI adapter and cable for monitors that don’t have a VGI port. An HDMI connection adapter cable (for older Mac models). Note: The new 2021 MacBook Pro models now include an HDMI port. A Mac computer with an HDMI or USB-C port. Cast Your Mac Screen to an HDTVīefore we cover how to hook up to a projector, let’s see how you can run a practice presentation from your Mac to a home television monitor. In this article we’ll show you how to make those connections. Contact the Helpdesk if the above steps did not help.You can use your Mac laptop as a wired or wireless input source for your HDTV and large-screen projector. The settings take effect immediately - just close the MIDI setup application. In the right-hand portion of the screen, ensure that Format is set to 48000 Hz and 2-ch 24bit. 
In the Audio MIDI Setup application, click on the HDMI option in the list of devices on the left. In the list of search results, click on the Audio MIDI Setup application. Click on the search button in the top right corner of the screen and type Audio MIDI Setup. If there is still no audio, follow the next steps, as well. This should produce both audio and video projection. In the System Preferences window, click Sound and under the Output tab, select the HDMI option. Click on the Apple logo in the top left corner of the screen and click System Preferences. Ensure that you have firmly connected the HDMI cable to the appropriate HDMI adapter and that the adapter is firmly connected to your Mac computer. Dana Auditorium is one location where this may happen. We have noticed that some combinations of Mac computer + HDMI adapter + classroom projection system may produce valid video projection but no audio. Potential audio problems when connecting a Mac to a projector using HDMI There is, however, a list of Mac computer models that do support both audio and video over the HDMI cable with the appropriate adapter. There is no definitive list of these computer models that do not support audio over the video cable. Roughly, this includes Mac laptops made before Mid-2010. 
Right now, we are aware of certain Mac computers that cannot output audio over the HDMI cable. However, not all computers that have Mini DisplayPort/Thunderbolt can send the audio over the same cable as video due to incomplete design by the manufacturer. For Mac models that have Mini DisplayPort/Thunderbolt, it is possible to use an HDMI adapter to connect to some of our newer classrooms and project a much higher quality image.
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