Dell M6300 User's Guide - Page 59

Using the Display Adjusting Brightness When a Dell™ computer is running on battery power, you can conserve power by setting the display brightness to the lowest comfortable setting by pressing and the up- or down-arrow key on the keyboard. NOTE: Brightness key combinations only affect the display on your portable computer, not monitors or projectors that you attach to your portable computer or docking device. If your computer is connected to an external monitor and you try to change the brightness level, the Brightness Meter may appear, but the brightness level on the external device does not change. You can press the following keys to adjust display brightness: • Press and the up-arrow key to increase brightness on the integrated display only (not on an external monitor). • Press and the down-arrow key to decrease brightness on the integrated display only (not on an external monitor). NOTE: In some cases you will not be able to keep your manual selections after using Sleep/Standby mode. Your selections may come back with a darker LCD. Using a Projector When you start the computer with an external device (such as an external monitor or projector) attached and turned on, the image may appear on either the computer display or the external device. Press to switch the video image between the display only, the external device only, or the display and the external device simultaneously. Using the Display 59