NOTE: .. When setting up this monitor for the first time, perform AUTO-SYNC before use. .. To perform AUTO-SYNC, first display an image that makes the entire screen very bright. It is better to perform AUTO-SYNC under WINDOWS. * BRIGHTNESS Adjusts the brightness level of screen image. Under the Main Menu, select BRIGHTNESS using [+] or [.] button, then press [Menu] button to activate the function. Press the [+] button to increase the brightness, [.] button to decrease the brightness shown below.