In OS X 10.6.8 Snow Leopard and earlier, you can wake your Mac by clicking the mouse button or pressing a key on the external keyboard.In OS X Lion 10.7 and later, the external display changes to a blue screen, then shows your Desktop.After your Mac notebook's Desktop appears on the external display, close the computer's lid.Use an appropriate Apple video adapter if With your Mac turned on and the display open, connect the Mac to the appropriate port on the external display or projector and turn theĭisplay or projector on.Connect a USB keyboard and mouse to your Mac.Make sure that your Mac notebook is plugged in to an outlet using the AC power adapter.Or turn on the computer after you connect the display. Isn't recognized when it's connected and your Mac is powered on, tryĬonnecting the display while your computer is asleep or off. Use these steps to enable closed-display mode. To use closed-display mode with your Mac notebook, you need: - An AC power adapter - An external keyboard and mouse or trackpad, either USB or wireless - A USB-C to USB adapter if you're using a USB mouse or keyboard with MacBook (2015 and later) or MacBook Pro (2016 and later) - An external display or projector You can use an external display or projector with a Mac notebook while
