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Yes, the on-screen display menu can be used to adjust these settings.
Sorry, there was a problem. Please try again later.Yes, please use the buttons present on the front bottom right side to navigate through the On-Screen Display (OSD) menu and adjust the contrast or brightness level of the monitor. Reference guide link: https://downloads.dell.com/manuals/all-products/esuprt_electronics_accessories/esuprt_electronics_accessories_monitors/dell-s2421nx-monitor_user%27s-guide_en-us.pdf
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