Most Mac Laptops will require a video adapter out from your laptop to the HDMI cable input on the classroom monitors or projectors.You should now be seeing the same image on both your laptop screen and on the monitors or Projectors in your classroom.If you do not see two displays then you might need to retry the TroubleShooting steps above. Then select Displays then select Arrangement.Under the Apple menu, upper left-hand corner select System Preferences.In most cases, choose Duplicate by using the arrow keys or cursor, then press enter. A list of four choices will appear on the right-hand side of the screen. An alternative is to press the Windows key and the “P” key simultaneously.You should now see the exact same image on both your laptop and the monitor or projector in your classroom. If you do see the two monitors and then select ‘Duplicate These Displays’ from the Orientation drop-down menu. If not please repeat the basic trouble-shooting listed above.
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