Some combinations of USB-C to HDMI dongle and video or graphics card (GPU) are not compatible to support the YCbCr color format. 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. A few permanently bright or dark pixels are considered normal by industry standards. The exact number of pixels that are allowed varies depending on the monitor. Refer to Dell Monitor Quality and Pixel Policy for more details. Terms Apply. Promotion ends 3 December 2023. Items are subject to availability. Max 5 units per customer.

Monitor will not support the YCbCr color format when a USB-C to HDMI dongle is connected from the monitor to the computer.

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The following table contains information about troubleshooting USB issues on your Dell P2421 monitor. Table 4: Troubleshooting USB issues on Dell P2421 monitor. The operating temperature shows the safe temperature range (from minimum to maximum), within which the display will function flawlessly. Outside this range it might operate improperly and/or fail entirely. Information about the maximum horizontal viewing angle, within which the image on the screen is of acceptable quality.

Horizontal stripes when watching online videos using Microsoft Movies and TV app, Microsoft Internet Explorer or Microsoft Edge. Hard drive retention: Hard drive retention is not available on models with a soldered hard drive, including XPS 9315 2in1, Chromebooks or Venue tablets, except the Venue 11 Pro.On certain video and applications with fast moving images, imaging ghosting, which appears as a trailing shadow, may occur. Dell P2421 supports Picture by Picture (PBP) mode. Picture by Picture (PBP) mode is 2 side-by-side images with each image that is displayed at 2560 x 1440 resolution.