Top Solutions

The most helpful knowledge articles for your product are included in this section.

What is Dell Display Manager

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This article provides information about the Dell Display Manager utility for Dell monitors. Learn how to download the Dell Display Manager utility to help with general display needs such as resolution and brightness, and more complex display inventory needs.

Last Modified: 09 MAY 2022

Article ID: 000060112

Article type: Solution

Dell Display Pixel Guidelines

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This article provides information about Dell's display resolution guidelines for LCD panels of Dell monitors and laptops. Learn what a pixel or dot is, what is premium panel guarantee, how to identify a bright or dead pixel on the LCD, and more.

Last Modified: 24 FEB 2022

Article ID: 000126004

Article type: Solution

Troubleshooting Light Leakage or Light Bleeding on a Dell Monitor or Laptop LCD Screen

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This article provides information about how to identify and troubleshoot light leakage or backlight bleeding on any Dell Monitor or Dell laptop LCD screen.

Last Modified: 23 FEB 2022

Article ID: 000132299

Article type: Solution

How to Connect a Monitor to a Dell Computer

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This article provides information about how to connect a monitor or projector to a Dell desktop, all-in-one, or laptop. Learn about the different types of video connectors, configure video settings and helpful links to troubleshooting guides.

Last Modified: 06 JAN 2022

Article ID: 000132424

Article type: Solution

How to Troubleshoot Display or Video Issues on a Dell Monitor

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This article provides information about how to troubleshoot and fix common display or video issues on a Dell monitor.

Last Modified: 19 NOV 2021

Article ID: 000132354

Article type: Solution


Manuals and Documents

Manuals, documents, and other information for your product are included in this section.

Dell P2421DC Monitor Simplified Service Manual

Publish date: 09 DEC 2021
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Publish date: 09 DEC 2021

Dell P2421DC Monitor User’s Guide

Publish date: 21 SEP 2021
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Publish date: 21 SEP 2021

Dell P2421DC Monitor Teardown Instructions

Publish date: 20 SEP 2021
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Publish date: 20 SEP 2021

Dell P2421DC - Outline Dimensions

Publish date: 27 FEB 2020
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Publish date: 27 FEB 2020

Dell P2421DC - Quick Setup Guide

Publish date: 27 FEB 2020
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Publish date: 27 FEB 2020

Dell P2421DC Dell Display Manager User’s Guide

Publish date: 27 FEB 2020
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Publish date: 27 FEB 2020

Dell P2421DC - Statement of Volatility

Publish date: 27 FEB 2020
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Publish date: 27 FEB 2020

Regulatory Information

Regulatory Information for your product is included in this section. Learn more about regulatory compliance

Dell Monitor P2421DCRegulatory Model P2421DCcRegulatory Type P2421DCc

DELL Regulatory and Environmental Datasheet
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DELL Regulatory and Environmental Datasheet

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Videos

Videos for your product are included in this section. See Video Tutorials

Featured Video 24 Jun 2022 07:44

How to replace a Dell Laptop Battery (00:03:46)

This video covers the general procedure for replacing a battery in most Dell Laptops. Your system my look different, have a different number of screws, different battery style and battery, screws, and cables my be located differently.