Switch Off Your Monitor by hpp Posted on 2011/04/27 With ctrl+shift+eject you can quickly turn off your monitor’s brightness. This is a fast and easy way to save energy while you are away from your Mac for a short break. Works on the Mac Pro, portable Macs and the iMac. This entry was posted in Hardware, Home, Mac OS, Misc. and tagged Monitor Brightness, Switch Off Monitor, Turn Off Monitor. Bookmark the permalink.