Connecting Macs to Classroom Displays
The steps below describe the steps needed to connect a Mac to a display in a classroom on campus via VGA, HDMI, or Apple TV as well as troubleshooting steps for common problems. Still have questions? Contact Audiovisual Services at x58757 or, for non-urgent requests, via email at firstname.lastname@example.org.
Connecting a Mac Using a VGA Cable
- Connect the VGA Cable to the Mac Dongle.
- Connect the Mac Dongle to the corresponding port on your Mac (Display Port, Lightning port, etc.)
- Connect the Audio Mini Cable to the headphone port on your Mac. (If you do not connect the audio mini cable, you will have no audio).
- Press the Laptop Button on the controller to display your Mac.
If your Mac is ON when you connect the VGA or Mac dongle, you may see a No Signal warning on the room display. Unplug the dongle and wait 5 seconds before reconnecting. This will give the Mac time to sync up with the room display. If this does not resolve the issue you may need to restart the computer and repeat steps 2-3.
Connecting a Mac Using an HDMI Cable
- Connect the HDMI Cable to the Mac or Mac Dongle.
- Press the HDMI Button on the controller to display your Mac.
Troubleshooing Video Output
If your Mac is ON when you connect the HDMI cable, you may see a No Signal warning on the room display. Unplug the HDMI cable and wait 5 seconds before reconnecting. This will give the Mac time to sync up with the room display. If this does not resolve the issue you may need to restart the computer and repeat steps 1-2.
Troubleshooting Audio Output
If you do not have audio after connecting the HDMI cable, you may need to set the audio output as HDMI. Follow the steps below to change the audio output setting from the internal speakers on the Mac to the external room speakers:
- Click the Apple Icon on the upper left side of the screen.
- Click System Preferences.
- Double click on the Sound icon.
- If it is not already selected, select the Output tab and then Double click on the HDMI output. If you are unsure which output is HDMI, it will be listed as HDMI in the window under the heading Type.
Connecting a Mac Using AirPlay via Apple TV
- Press the Apple TV Buttonon the controller to wake up the Apple TV
- Click the AirPlay icon on the upper right side of the screen on your desktop.
- Select the Apple TV you would like to connect to by clicking the room’s name from the drop down list (Our Apple TV’s are named to match the room’s name/number).
- You will be prompted to Enter a 4 Digit Passcode. The passcode will appear on the room's display. The passcode changes every time a device connects to the Apple TV, so do not write this code down as it will not work the next time you connect. If the 4 Digit Passcode does not display repeat Steps 2-3.
The Apple TV is configured to sleep after 1 hour of inactivity. If the Apple TV is in sleep mode, you will need to follow steps 1-4 again to reconnect your Mac.