Dell P2421D - LED monitor - 23.8" (23.8" viewable) - 2560 x 1440 QHD @ 60 Hz - IPS - 300 cd/m² - 1000:1-5 ms - HDMI, DisplayPort - with 3 years Advanced Exchange Basic Warranty, Black

Product Information

Make sure that the video cable connecting the monitor to the computer is connected properly and is secure. The ratio between the horizontal and the vertical side of the display. Some of the standard and widely used aspect ratios are 4:3, 5:4, 16:9 and 16:10. The NTSC (1953) color space is introduced in 1953 by the FCC with the appearance of color television and has a wider gamut than the sRGB. Your Dell P2421 Monitor has an integrated diagnostic tool. Hardware diagnostic helps determine if the screen abnormality issue is with the monitor or the video card on your computer.

Your Dell P2421D monitor has a built-in diagnostic tool that helps to determine if the screen abnormality you are experiencing is a problem with the monitor or with the video card on your computer. Information about whether there is a possibility for wall mounting according to the VESA Mounting Interface Standard (MIS). This is the normal behavior of the monitor. Dell consumer monitors are tested under 150-lux ambient lighting (similar to typical office lighting). Dell UltraSharp and Gaming monitors are tested with tighter criteria of 70-lux ambient lighting (dimly lit room, but not dark). Learn more about Troubleshooting Light Leakage or Light Bleeding on a Dell Monitor or Laptop LCD Screen. Disable the YCbCr setting from the video or graphics utility such as Intel HD Graphics Control Panel. The storage altitude shows the maximum possible altitude for secure storing of the display. Storing it above this limit may result in damaging the display.Display mode changes from Second screen only to Extended mode after opening and closing the laptop LCD. When changing the monitor’s resolution from Windows Display Settings, the image quality may not be good.

The dynamic contrast shows the ratio between the brightest and the darkest color, which the display can reproduce over time, for example, in the course of playing a video. According to industry standards, a few persistently bright or dark pixels are normal. The number of pixels permitted varies depending on the display. See the Dell LCD Monitor Pixel Guidelines for more details. On certain videos and applications with fast-moving images, imaging ghosting, which appears as a trailing shadow, may occur.Verify that the monitor is working correctly by running a diagnostic test if you experience the following symptoms. If you observe any screen anomalies, you should isolate the monitor by performing the built-in diagnostics (BID). Change the resolution using the video or graphics card (GPU) utility such as Intel HD Graphics Control Panel. The pixel pitch shows the distance from the centers of two neighboring pixels. In displays, which have a native resolution (the TFT ones, for example), the pixel pitch depends on the resolution and the size of the screen.