DisplayPort settings of the LCD display may limit resolution
Summary: Configure the On-Screen Display (OSD) settings on the Dell LCD display to achieve maximum resolution using a DisplayPort connection.
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Instructions
The DisplayPort settings of the LCD display may be configured to achieve maximum resolution using a DisplayPort connection.
DisplayPort connected display does not show Optimal Resolution.
Your Dell 4k or 2k Ultra HD display may report that the maximum resolution offered for the display is less than 3840 x 2160. The highest resolution obtainable may show as WQXGA 2560 x 1600 pixels.
This can occur when the display is correctly connected using a DisplayPort cable without adapters.
Configure DisplayPort 1.2 in the display configuration.
To ensure display resolution higher than 2560 x 1600 pixels, configure DisplayPort input to DisplayPort 1.2 in the On-Screen Display (OSD) settings of the LCD display. For information about changing the OSD settings for your Dell LCD display, reference the display manual at the following location: Dell Support/Manuals.
Affected Products
Alienware and Dell Gaming Monitors, C Series, D Series, E Series, P Series, S Series, SE Series, UltraSharp Premier (UP) Series, UltraSharp (U) Series, Dell Monitors, Dell Plus Monitors, Dell Pro Monitors, Dell Pro Plus MonitorsArticle Properties
Article Number: 000129296
Article Type: How To
Last Modified: 03 Jun 2026
Version: 7
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