Changing your Battery and Energy Use Settings
You may want to change the amount of time before your laptop display turns off or dims while on battery or while connected to a power adapter. To do this go to the Apple Menu --> System Preferences --> Battery Select Battery or Power Adapter on the side. Also see this article from Apple's support site …
Enable Display Mirroring
This guide will show you how to enable display mirroring on your computer. Step 1: Plug in your display Step 2: Open “System Preferences” from the Apple menu in the menu bar. Step 3: Open Displays Preferences. Step 4: Click on the “Arrangement” Tab. Step 5: Check the box labeled “Mirror Displays” Step…

