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Dell U2421E

Dell U2421E

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Dell U2421E

Dell U2421E Articles

Articles

15 out of 51 shown
51 out of 51 shown
How to Set up Dual Monitors or Multiple Monitors in Windows
Learn how to set up dual or multiple monitors in Windows, adjust dual screen settings, and configure up dual or multiple monitors for better productivity, in Windows 11 and Windows 10. Updated MARCH 14, 2025 ID: 000134286
How to Connect a Monitor to a Dell Computer
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. Updated MARCH 12, 2025 ID: 000132424
Damaged USB Type-C Cable Causes Laptops to Not Charge and No Video with Monitors
This article provides information about how to properly connect USB Type-C cables into laptops and monitors to avoid damaging the cables. Updated MARCH 13, 2025 ID: 000216384
Monitor Cable Types Explained VGA HDMI DisplayPort and More
Different types of monitor cables including HDMI, DisplayPort, DVI, and VGA (learn which video cable types of support UHD, FHD, and other resolutions for optimal display performance). Updated MARCH 13, 2025 ID: 000143545
Dell Display Pixel Guidelines
This article provides information about Dell's display resolution guidelines for LCD panels of Dell monitors and laptops. Learn what a dot or pixel is, what the Premium Panel Exchange is, how to identify a bright or dead pixel on the LCD panel and more. Updated MARCH 13, 2025 ID: 000126004
How to Download and Install Dell Drivers and Firmware
This article provides information about how to download and install or update Dell drivers for your Dell desktop, laptop, all-in-one, workstation, printer, monitor, tablets, and so on. Updated MARCH 13, 2025 ID: 000183911
Dell Monitor Not Turning On or Has No Power and Power LED is Off
Dell monitor not turning on? Discover troubleshooting steps for intermittent power issues or an off LED. Learn how to check cable connections, test power outlets, and more to resolve power problems. Updated MARCH 13, 2025 ID: 000132245
Understanding Surge Protectors and How They Protect Your Electronics
What surge protectors are, how they work, and why they are essential for protecting your electronics from power surges. Find out how to choose the right surge protector and understand their lifespan. Updated MARCH 10, 2025 ID: 000145629
Dell Slim Soundbar SB521A Usage and Troubleshooting Guide
The following article provides information about the Dell SB521A Slim Soundbar. You can reference each section to learn more about the features of the Dell SB521A Slim Soundbar and how to use it. Updated MARCH 10, 2025 ID: 000201651
Dell Slim Conferencing Soundbar SB522A Usage and Troubleshooting Guide
The following article provides information about the Dell SB522A Slim Conferencing Soundbar. You can reference each section to learn more about the features of the Dell SB522A Slim Conferencing Soundbar and how to use it. Updated MARCH 10, 2025 ID: 000197384
How to Troubleshoot Display or Video Issues on a Dell Monitor
This article provides information about how to troubleshoot and fix common display or video issues on a Dell monitor. Updated MARCH 04, 2025 ID: 000132354
Dell Display and Peripheral Manager for Windows
Dell Display and Peripheral Manager (DDPM) is an app that helps you set up and configure your Dell monitors and peripherals such as keyboard, mouse, webcam, audio devices, and active pen. Updated FEBRUARY 28, 2025 ID: 000287285
Troubleshoot Multiple Monitor Issues and Fix External Monitor Connection Issues
Troubleshoot multiple monitor issues and fix common external monitor connection issues. Find steps to resolve display issues when using multiple monitors in Windows. Updated FEBRUARY 24, 2025 ID: 000132851
Items That Should Be Returned With A Warranty Monitor Replacement
This article describes what items to include when returning a replacement Dell monitor under warranty. Updated FEBRUARY 20, 2025 ID: 000140860
Security Support Policy for Dell Display Manager and Dell Peripheral Manager
This policy provides details on the Dell Technologies Security Support Policy for the following Dell Technologies products: Dell Display Manager, Dell Peripheral Manager. Updated FEBRUARY 19, 2025 ID: 000060112
What is DisplayPort: Origins, Features, and Benefits
Explore the evolution of DisplayPort technology. Learn about its origins, features, and benefits. Discover how DisplayPort compares to other interfaces. Updated FEBRUARY 11, 2025 ID: 000134877
Troubleshooting Light Leakage or Light Bleeding on a Dell Monitor
This article provides information about how to identify and troubleshoot light leakage or backlight bleeding on any Dell monitor. Updated FEBRUARY 09, 2025 ID: 000132299
How to Troubleshoot a Dell Desktop Monitor
This article provides information about how to identify and resolve the various issues that you can have with a Dell Desktop Monitor. Updated FEBRUARY 09, 2025 ID: 000132110
How to Set up Multiple Monitors in Microsoft Windows 11 and Windows 10
Learn how to setup dual or multiple monitors in Microsoft Windows and troubleshoot dual or multiple monitor issues. Learn how to connect your computer to a TV or a Dell wireless monitor. Updated FEBRUARY 08, 2025 ID: 000024883
How to Set the Brightness and Contrast on Dell Monitors
To set or adjust the brightness and contrast of a Dell monitor, see the monitor's documentation. This article provides information about how to find the documentation of your monitor to get model-specific information. Updated FEBRUARY 07, 2025 ID: 000132335
Dell Products: How to Create a Support Request Online for Your, In-warranty Dell Product
This article explains the procedure to open a Service request using the Dell support page. Updated FEBRUARY 05, 2025 ID: 000132371
Dell Display and Peripheral Manager for macOS
Dell Display and Peripheral Manager (DDPM) is software that enhances productivity and customization for Dell monitors and webcams on macOS. Updated FEBRUARY 04, 2025 ID: 000201067
Dell Monitors with TCO Certified Warranty
This article provides information about limited hardware warranty for TCO certified Dell monitors. Updated FEBRUARY 04, 2025 ID: 000193165
Troubleshooting Dell Monitor USB Downstream Port Issues
Discover why USB downstream ports on Dell monitors may not work. Learn how to fix recognition issues and ensure proper connections. Find solutions for common problems. Updated FEBRUARY 04, 2025 ID: 000189810
How to Use Dell Power Button Sync for Dell Monitors
Learn about the Dell Power Button Sync feature, compatible monitors, common use cases, and detailed examples of how this feature works. Updated JANUARY 24, 2025 ID: 000218558
Troubleshoot a Flickering Screen after a Windows 10 Upgrade
The following article provides information about how to troubleshoot a flickering issue with the display after a Windows 10 upgrade. Updated JANUARY 23, 2025 ID: 000129024
How to Change the Video Settings or Improve Text in Windows 11 and Windows 10
Learn how to change the display or video settings in Microsoft Windows 11 and Windows 10 on your Dell computer. Find information about how to change the screen resolution, refresh rate and size of fonts, icons and improve text. Updated JANUARY 23, 2025 ID: 000129416
Guidance for Keeping Your Dell Technologies Equipment Clean
Find out more about how to clean your Dell equipment. Updated JANUARY 07, 2025 ID: 000133659
Audio Issues after Connecting Headphones to a Dell Monitor
The following article provides information about audio issues when plugging a 3.5 mm audio cable direct to a Dell Monitor. Updated DECEMBER 13, 2024 ID: 000253639
Monitor Turns to a Black Screen When USB-C Prioritization Changes from High Data Speed to High Resolution
A ThinOS device connects to a monitor with a USB-C prioritization feature turns to black when changing the configuration from "High Data Speed" to "High Resolution." Updated DECEMBER 09, 2024 ID: 000194575
How to remove "ghost" or non-attached monitors showing in Windows display settings
Follow these general guidelines for resolving the issue of extra, or "ghost", monitors showing in the Windows Display Settings. Updated DECEMBER 03, 2024 ID: 000108307
Dell Power Button Sync Not Working on Latitude 7420 After Updating BIOS to 1.27.0 and 1.28.0
This article provides information about an issue with the Dell Power Button Sync (DPBS) function occurs on Latitude 7420. Updated NOVEMBER 26, 2024 ID: 000217792
How to Wake a Computer or Monitor From Sleep, Standby, Suspend or Hibernate
How to wake up your computer from sleep mode, troubleshoot monitor standby issues, and resolve why your monitor keeps going to sleep in Windows 10 and 11. Updated NOVEMBER 21, 2024 ID: 000130380
Troubleshooting Dell Monitors with USB Charging Feature
This article provides information about the Troubleshooting Dell monitors with USB charging feature. Updated NOVEMBER 15, 2024 ID: 000192322
Recycling Dell Monitors - How to Get Disassembly Instructions for Dell Monitors
This article provides information about how to get disassembly instructions of a Dell monitor for recycling. Updated NOVEMBER 11, 2024 ID: 000144813
How to Run the Dell Monitor Built-in Diagnostics
The following article takes you through the various integrated diagnostics that are built into the various generations of Dell Monitors. Updated OCTOBER 18, 2024 ID: 000213901
How to Identify and Configure 6, 8, and 10-Bit Color on a Dell Monitor
This article provides the latest information about identifying if your Dell monitor supports 6, 8, or 10-bit color depth and configuring it. Updated SEPTEMBER 27, 2024 ID: 000180526
How to Run a Diagnostic Test on a Dell Monitor
This article provides information about integrated self-test (BIST, also called built-in diagnostics, or BID) and self-test feature check (STFC) diagnostic tests available on Dell monitors. Learn how to run a diagnostic test to diagnose hardware issues with Dell monitors. Updated SEPTEMBER 26, 2024 ID: 000124390
Unable to Turn on Dell Power Button Sync System from Standby Mode
This article provides information about the Dell Power Button Sync (DPBS) function when woken from Standby mode. Updated SEPTEMBER 25, 2024 ID: 000195111
Returning Service Parts to Dell (US Only)
This article provides information about how to return service parts to Dell in the United States Region only. Updated SEPTEMBER 05, 2024 ID: 000178919
Problems With Desktop Monitors and Laptop Screens
This article helps you identify the display or video issue based on symptoms that you notice and provides links to Dell knowledge base articles for troubleshooting steps. Updated SEPTEMBER 03, 2024 ID: 000124516
Support Notifications: Overview and Common Questions
This article provides information about support notifications for service requests, part dispatches, and driver updates. Learn how to create and manage support notifications for your Dell products. Updated SEPTEMBER 03, 2024 ID: 000139419
Drivers and Downloads FAQs
This article provides answers to frequently asked questions about Dell drivers and how to use the Dell Support Drivers website. Learn what Dell drivers are available, how to download and install a Dell driver, and more. Updated SEPTEMBER 03, 2024 ID: 000123347
MyDell Limited External Monitors Supported by Color and Display Application
MyDell Color and Display application supported only limited external monitors. Updated AUGUST 28, 2024 ID: 000207818
Locating the Serial Number, Service Tag and Regulatory Stickers on Dell UltraSharp Monitors
Learn to locate the Serial Number, Service Tag, and Regulatory stickers on your Dell UltraSharp monitors. Updated AUGUST 06, 2024 ID: 000132334
The features of the Dell Dual Monitor Arm - MDA20
The following article provides information about the use, features, assembly, and compatibility of the Dell Dual Monitor Arm - MDA20. Updated APRIL 25, 2024 ID: 000153027
The features of the Dell Single Monitor Arm - MSA20
This article provides information about the use and features of the Dell Single Monitor Arm - MSA20. Updated APRIL 25, 2024 ID: 000152981
Security Support Policy for Dell Monitors with either Docking Capability or an Integrated Ethernet Port
This policy provides details on the Dell Technologies Security Support Policy for Dell monitors that have either a docking or Ethernet connection integrated into the monitor. Updated MARCH 20, 2024 ID: 000222795
Network Disconnects on Non-Dell Computers Using Dell Monitor
The network may disconnect when using non-Dell computers with Dell monitors that are connected to the monitor network connection. Updated AUGUST 10, 2023 ID: 000216538
Damage to Monitor Through Incorrect Cleaning Methods
This article talks about how to clean the screen and body of your monitor to avoid physical defects that could arise from Improper cleaning methods. Updated JULY 11, 2023 ID: 000188802
Guidelines for Dell Monitor Usage to Prevent Image Retention and Preserve Panel Life
Guidelines for optimal usage and duty cycle information about Dell monitors. Updated JANUARY 11, 2023 ID: 000129648