NOTE: You can also use the Brightness level slider to adjust the brightness manually.Cleaning the display1 Check for any smudges or areas that has to be cleaned.2 Use a microfiber cloth to remove any obvious dust and gently brush off any dirt particles.3 Proper cleaning kits should be used to clean and keep your display in a crisp, clear, and pristine condition.NOTE: Never spray any cleaning solutions directly on the screen; spray it to the cleaning cloth.4 Gently wipe the screen in a circular motion. Do not press hard on the cloth.NOTE: Do not press hard or touch the screen with your fingers or you may leave oily prints and smears.NOTE: Do not leave any liquid on the screen.5 Remove all excess moisture as it may damage your screen.6 Let the display dry thoroughly before you turn it on.7 For stains that are hard to remove, repeat this procedure till the display is clean.Connecting to external display devicesFollow these steps to connect your laptop to an external display device:1 Ensure that the projector is turned on and plug the projector cable into a video port on your laptop.2 Press the Windows logo+P key.3 Select one of the following modes:• PC screen only• Duplicate• Extend• Second Screen onlyNOTE: For more information, see the document that shipped with your display device.Hard drive optionsThis laptop supports SATA drives and SSDs.Identifying the hard drive in Windows 101 Tap or click All Settings on the Windows 10 Charms Bar.2 Tap or click Control Panel, select Device Manager , and expand Disk drives.52 Technology and components