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May 28, 2015 11:21 AM in response to davevezby judysings,Good morning, davevez,
The resources below will guide you through the process of connecting an external display or projector to your MacBook Pro.
OS X: How to use multiple displays with your Mac in Mountain Lion and earlier - Apple Support
https://support.apple.com/en-us/HT202351- Quick key commands for video controls:
- Press Command-F1 to toggle between video mirroring and extended desktop
- Press Command-F2 to detect displays
How to use your Mac notebook computer in closed-clamshell (display closed) mode with an external display - Apple Support
https://support.apple.com/en-us/HT201834Apple computers: Troubleshooting issues with video on internal or external displays - Apple Support
https://support.apple.com/en-us/HT201177Hopefully, this information, along with the manual for the projector you are using, will get you on track.
Have a good day,
- Judy
- Quick key commands for video controls:
