Users Guide
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... Transport (MST) Modes 13 USB-C MST Multi-Stream Transport (MST) Modes 13 Electrical specifications 14 Physical characteristics 15 Environmental characteristics 16 Pin assignments 17 Plug-and-Play 24 LCD monitor quality and pixel policy 24 Ergonomics 25 Handling and moving your display 27 Maintenance guidelines 28 Cleaning your monitor 28 Setting up the monitor 29 Connecting the stand 29 Using the tilt, swivel, and vertical extension 32 ...
... Transport (MST) Modes 13 USB-C MST Multi-Stream Transport (MST) Modes 13 Electrical specifications 14 Physical characteristics 15 Environmental characteristics 16 Pin assignments 17 Plug-and-Play 24 LCD monitor quality and pixel policy 24 Ergonomics 25 Handling and moving your display 27 Maintenance guidelines 28 Cleaning your monitor 28 Setting up the monitor 29 Connecting the stand 29 Using the tilt, swivel, and vertical extension 32 ...
Users Guide
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... display settings on your computer after rotation33 Connecting your monitor 34 Organizing your cables 38 Securing your monitor using Kensington lock (optional 38 Removing the monitor stand 39 Wall mounting (Optional 40 Operating the monitor 41 Power on the monitor 41 Using the joystick control 41 Using the rear-panel controls 42 Using the OSD lock function 43 Front‑panel button 46 Using the On-Screen Display (OSD) Menu 47 Accessing the menu system 47 OSD warning messages 57 Setting the maximum resolution 61 Troubleshooting...
... display settings on your computer after rotation33 Connecting your monitor 34 Organizing your cables 38 Securing your monitor using Kensington lock (optional 38 Removing the monitor stand 39 Wall mounting (Optional 40 Operating the monitor 41 Power on the monitor 41 Using the joystick control 41 Using the rear-panel controls 42 Using the OSD lock function 43 Front‑panel button 46 Using the On-Screen Display (OSD) Menu 47 Accessing the menu system 47 OSD warning messages 57 Setting the maximum resolution 61 Troubleshooting...
Users Guide
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... it or provide a duplicate. • Quick Setup Guide • Safety, Environmental, and Regulatory Information • Factory Calibration Report Product features The Dell UltraSharp U2421E monitor has an active matrix, Thin-Film Transistor (TFT), Liquid Crystal Display (LCD), and LED backlight. USB Type-C cable (C to C) Dell UltraSharp U2421E 2020-09 Dell.com/U2421E U2421E Color Calibration Factory Report Every Dell U2421E is displayed onscreen. The factory measurements from this new Dell U2421E UltraSharp monitor. Standard mode (sRGB) Serial No. Please retain this Report...
... it or provide a duplicate. • Quick Setup Guide • Safety, Environmental, and Regulatory Information • Factory Calibration Report Product features The Dell UltraSharp U2421E monitor has an active matrix, Thin-Film Transistor (TFT), Liquid Crystal Display (LCD), and LED backlight. USB Type-C cable (C to C) Dell UltraSharp U2421E 2020-09 Dell.com/U2421E U2421E Color Calibration Factory Report Every Dell U2421E is displayed onscreen. The factory measurements from this new Dell U2421E UltraSharp monitor. Standard mode (sRGB) Serial No. Please retain this Report...
Users Guide
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... your monitor | 9 The Service Tag is a unique alphanumeric identifier that enables Dell service technicians to organize cables by inserting them through the slot. x 100 mm-behind attached compatible wall mount kit (100 mm x 100 VESA cover) mm). 2 Regulatory label Lists the regulatory approvals. 3 Stand release button Releases stand from the monitor. 4 Power On/Off button To turn the monitor on or off. 5 Joystick Use it to contact Dell number, and Service Tag...
... your monitor | 9 The Service Tag is a unique alphanumeric identifier that enables Dell service technicians to organize cables by inserting them through the slot. x 100 mm-behind attached compatible wall mount kit (100 mm x 100 VESA cover) mm). 2 Regulatory label Lists the regulatory approvals. 3 Stand release button Releases stand from the monitor. 4 Power On/Off button To turn the monitor on or off. 5 Joystick Use it to contact Dell number, and Service Tag...
Users Guide
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... computer using DP out connector. 7,9,11 SuperSpeed USB Connect your monitor Bottom view 9 13 12 3 4 5 6 7 8 9 10 11 12 Label Description Use 1 Security lock slot Secures monitor with security cable lock (sold separately). 2 Power connector Connect the power cable. 3 HDMI port Connect your computer with the HDMI cable. 4 DisplayPort in Connect your computer with battery icon supports Battery Charging Rev. 1.2. 8 Audio line-out Connect speakers to playback audio through HDMI or port DisplayPort audio channels. To enable MST, refer to instruction on Windows...
... computer using DP out connector. 7,9,11 SuperSpeed USB Connect your monitor Bottom view 9 13 12 3 4 5 6 7 8 9 10 11 12 Label Description Use 1 Security lock slot Secures monitor with security cable lock (sold separately). 2 Power connector Connect the power cable. 3 HDMI port Connect your computer with the HDMI cable. 4 DisplayPort in Connect your computer with battery icon supports Battery Charging Rev. 1.2. 8 Audio line-out Connect speakers to playback audio through HDMI or port DisplayPort audio channels. To enable MST, refer to instruction on Windows...
Users Guide
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... Monitor specifications Screen type Active matrix - 10 RJ-45 connector Connect Internet. TFT LCD Panel Type In-plane switching Technology Aspect ratio 16:10 Viewable image dimensions Diagonal 61.13 cm (24.1 in.) Active Area Horizontal 518.4 mm (20.40 in.) Vertical Area 324.0 mm (12.76 in.) 167961.6 mm2 (260.30 in.2) Pixel pitch 0.27 mm x 0.27 mm Pixel per inch (PPI) 93.95 Viewing...
... Monitor specifications Screen type Active matrix - 10 RJ-45 connector Connect Internet. TFT LCD Panel Type In-plane switching Technology Aspect ratio 16:10 Viewable image dimensions Diagonal 61.13 cm (24.1 in.) Active Area Horizontal 518.4 mm (20.40 in.) Vertical Area 324.0 mm (12.76 in.) 167961.6 mm2 (260.30 in.2) Pixel pitch 0.27 mm x 0.27 mm Pixel per inch (PPI) 93.95 Viewing...
Users Guide
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... range 30 kHz to 83 kHz Vertical scan range 49 Hz to 90° Cable management Yes Dell Display Manager (DDM) Easy Arrange Compatibility and other key features Security Security lock slot (cable lock sold separately) * At panel native only, under Custom Mode preset. Color gamut* 99% sRGB 99% REC709 Calibration accuracy Delta E < 2 (average) Connectivity • 1 x DP 1.4 • 1 x HDMI1 .4 • 1 x USB Type-C (Alternate mode with DisplayPort 1.4, USB 3.2 Gen 1 upstream port, Power...
... range 30 kHz to 83 kHz Vertical scan range 49 Hz to 90° Cable management Yes Dell Display Manager (DDM) Easy Arrange Compatibility and other key features Security Security lock slot (cable lock sold separately) * At panel native only, under Custom Mode preset. Color gamut* 99% sRGB 99% REC709 Calibration accuracy Delta E < 2 (average) Connectivity • 1 x DP 1.4 • 1 x HDMI1 .4 • 1 x USB Type-C (Alternate mode with DisplayPort 1.4, USB 3.2 Gen 1 upstream port, Power...
Users Guide
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... in this section, follow the Safety Instructions. Connecting your computer. 2. Connect the DisplayPort or HDMI cable, and the USB Type-C cable from the OSD Menu on your monitor and then turn on your monitor to the computer. 3. A DisplayPort 1.1 Graphic card may not display normally. Select the correct input source from your computer. No image when using DP connection to the PC" to "product specific problems - Turn on your monitor to the computer: 1. To...
... in this section, follow the Safety Instructions. Connecting your computer. 2. Connect the DisplayPort or HDMI cable, and the USB Type-C cable from the OSD Menu on your monitor and then turn on your monitor to the computer. 3. A DisplayPort 1.1 Graphic card may not display normally. Select the correct input source from your computer. No image when using DP connection to the PC" to "product specific problems - Turn on your monitor to the computer: 1. To...
Users Guide
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... Dell U2421E monitor is designed to supply power delivery of up to 90 W to 90 W. Rated power (on your laptop. Connecting the USB cable USB USB Connecting the USB Type-C cable USB Type-C USB Type-C The USB Type-C port on laptops that have USB Type-C with PowerDelivery) Maximum charging power 45 W 45 W 65 W 65 W 90 W 90 W 130 W Not supported 36 | Setting up to your monitor: • Can be used as USB Type-C or DisplayPort 1.4, alternatively. • Supports USB Power...
... Dell U2421E monitor is designed to supply power delivery of up to 90 W to 90 W. Rated power (on your laptop. Connecting the USB cable USB USB Connecting the USB Type-C cable USB Type-C USB Type-C The USB Type-C port on laptops that have USB Type-C with PowerDelivery) Maximum charging power 45 W 45 W 65 W 65 W 90 W 90 W 130 W Not supported 36 | Setting up to your monitor: • Can be used as USB Type-C or DisplayPort 1.4, alternatively. • Supports USB Power...
Users Guide
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... with blue tint with slider set at 10,000K. • Custom Color: Allows you can choose Standard, Movie, Game, Color Temp. or Custom Color from the list. • Standard: Default Color setting, This monitor uses a low blue light panel, and is certified by TUV to manually adjust the color settings. Icon Menu and Submenus Color Description Use the Color menu to adjust the Red, Green, and Blue values and create your own preset color mode. Operating the monitor | 49...
... with blue tint with slider set at 10,000K. • Custom Color: Allows you can choose Standard, Movie, Game, Color Temp. or Custom Color from the list. • Standard: Default Color setting, This monitor uses a low blue light panel, and is certified by TUV to manually adjust the color settings. Icon Menu and Submenus Color Description Use the Color menu to adjust the Red, Green, and Blue values and create your own preset color mode. Operating the monitor | 49...
Users Guide
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Enable this feature for best user experience and optimum performance of your computer. Display Info DDC/CI Displays the monitor's current settings. Operating the monitor | 55 You can disable this feature by selecting Off. DDC/CI (Display Data Channel/Command Interface) allows your monitor parameters (brightness, color balance, and etc.) to adjust the OSD settings such as the DDC/CI, LCD conditioning, and so on your monitor. Icon Menu and Submenus Others Description Select this option to be adjustable via the software on .
Enable this feature for best user experience and optimum performance of your computer. Display Info DDC/CI Displays the monitor's current settings. Operating the monitor | 55 You can disable this feature by selecting Off. DDC/CI (Display Data Channel/Command Interface) allows your monitor parameters (brightness, color balance, and etc.) to adjust the OSD settings such as the DDC/CI, LCD conditioning, and so on your monitor. Icon Menu and Submenus Others Description Select this option to be adjustable via the software on .
Users Guide
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... the monitor screen remains dark, run the monitor self-test by performing the following steps: 1. or or 4. Troubleshooting WARNING: Before you to check whether your monitor is working correctly. Also, depending upon the selected input, one of the procedures in self-test mode, the power LED remains white. If your computer and the monitor. 2. To ensure proper Self-Test operation, remove all digital and the analog cables...
... the monitor screen remains dark, run the monitor self-test by performing the following steps: 1. or or 4. Troubleshooting WARNING: Before you to check whether your monitor is working correctly. Also, depending upon the selected input, one of the procedures in self-test mode, the power LED remains white. If your computer and the monitor. 2. To ensure proper Self-Test operation, remove all digital and the analog cables...
Users Guide
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... upon using the built-in diagnostic tool, the monitor is functioning properly. Repeat steps 5 and 6 until a red screen is an inherent problem with your monitor, or with your computer and the monitor. Toggle the joystick once again until the screen displays green, blue, black, and white colors. The test is complete when a text screen is displayed. 4. A gray screen is displayed. 5. To exit, toggle the joystick control again. Troubleshooting | 63 then turn...
... upon using the built-in diagnostic tool, the monitor is functioning properly. Repeat steps 5 and 6 until a red screen is an inherent problem with your monitor, or with your computer and the monitor. Toggle the joystick once again until the screen displays green, blue, black, and white colors. The test is complete when a text screen is displayed. 4. A gray screen is displayed. 5. To exit, toggle the joystick control again. Troubleshooting | 63 then turn...
Users Guide
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... Video/ Power LED on Missing Pixels Stuck-on Pixels Brightness Problems Safety Related Issues What You Experience Possible Solutions No picture • Ensure that the video cable connecting the monitor and the computer is properly connected and secure. • Verify that the power outlet is functioning properly using any troubleshooting steps. LCD screen has • Cycle power On-Off. spots • Pixel that is permanently off . or too bright • Adjust brightness and contrast controls...
... Video/ Power LED on Missing Pixels Stuck-on Pixels Brightness Problems Safety Related Issues What You Experience Possible Solutions No picture • Ensure that the video cable connecting the monitor and the computer is properly connected and secure. • Verify that the power outlet is functioning properly using any troubleshooting steps. LCD screen has • Cycle power On-Off. spots • Pixel that is permanently off . or too bright • Adjust brightness and contrast controls...
Users Guide
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...; Adjust R/G/B value under Custom Color in Color menu OSD. • Change the Input Color Format to PC RGB or YPbPr in the Color menu OSD. • Run the built-in diagnostics. Troubleshooting | 65 These can be adjusted in image left on image displayed Windows Power Options or Mac Energy Saver the monitor for bent or broken pins in the video cable connector. a long period of the Preset Modes in the Color menu OSD depending on the setting. Missing Color Picture missing color...
...; Adjust R/G/B value under Custom Color in Color menu OSD. • Change the Input Color Format to PC RGB or YPbPr in the Color menu OSD. • Run the built-in diagnostics. Troubleshooting | 65 These can be adjusted in image left on image displayed Windows Power Options or Mac Energy Saver the monitor for bent or broken pins in the video cable connector. a long period of the Preset Modes in the Color menu OSD depending on the setting. Missing Color Picture missing color...
Users Guide
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... Input Signal when user controls are pressed The picture does not fill the entire screen No image when using DP connection to the PC No image when using USB Type-C connection to computer, laptop, and so on What you experience OSD does not appear on the screen No picture, the LED light is white The picture cannot fill the height or width of the screen Black screen Black screen Possible solutions • Turn off the monitor, unplug the monitor power cable, plug...
... Input Signal when user controls are pressed The picture does not fill the entire screen No image when using DP connection to the PC No image when using USB Type-C connection to computer, laptop, and so on What you experience OSD does not appear on the screen No picture, the LED light is white The picture cannot fill the height or width of the screen Black screen Black screen Possible solutions • Turn off the monitor, unplug the monitor power cable, plug...
Users Guide
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Download and install the latest graphics card driver. • Some DP 1.1a graphics card cannot support DP 1.4 monitors. Troubleshooting | 67 Go to OSD menu, under Input Source selection, press and hold DP select key for 8 sec to change the monitor setting from DP 1.4 to DP 1.1a. • USB Type-C input, Go to OSD menu, under Display Info check the Link Rate is HBR2 or HBR3, if Link Rate is connected, keeps the power button On. Problem No charging when...
Download and install the latest graphics card driver. • Some DP 1.1a graphics card cannot support DP 1.4 monitors. Troubleshooting | 67 Go to OSD menu, under Input Source selection, press and hold DP select key for 8 sec to change the monitor setting from DP 1.4 to DP 1.1a. • USB Type-C input, Go to OSD menu, under Display Info check the Link Rate is HBR2 or HBR3, if Link Rate is connected, keeps the power button On. Problem No charging when...
Users Guide
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... the RealTek Gigabit Ethernet Controller is installed in the Windows Device Manager. • If your BIOS Setup has a LAN/GBE Enabled/ Disabled option, make sure it on the computer, plug in the monitor power cord and Type-C cable. Re-connect both ends of the Ethernet cable if the LED is not lit. • First power off the monitor and turn it is turned ON. Then, power on again. •...
... the RealTek Gigabit Ethernet Controller is installed in the Windows Device Manager. • If your BIOS Setup has a LAN/GBE Enabled/ Disabled option, make sure it on the computer, plug in the monitor power cord and Type-C cable. Re-connect both ends of the Ethernet cable if the LED is not lit. • First power off the monitor and turn it is turned ON. Then, power on again. •...
Display Manager Users Guide
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Dell U2421HE - Overview Dell Display Manager is a Microsoft Windows application used to manage a monitor or a group of automatic settings, energy management, window organization, image rotation, and other features on selected Dell monitors. Information about monitors connected to communicate with your monitor. It enables manual adjustment of the displayed image, assignment of monitors. After installed, Dell Display Manager runs each time the system starts and places its icon in the menu as below. 4 | Overview Ensure that...
Dell U2421HE - Overview Dell Display Manager is a Microsoft Windows application used to manage a monitor or a group of automatic settings, energy management, window organization, image rotation, and other features on selected Dell monitors. Information about monitors connected to communicate with your monitor. It enables manual adjustment of the displayed image, assignment of monitors. After installed, Dell Display Manager runs each time the system starts and places its icon in the menu as below. 4 | Overview Ensure that...
Display Manager Users Guide
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... check. • Move DDM UI to the monitor to be controlled. • Press Ctrl+Shift+D to adjust basic functions, configure auto mode and access other features. You can select Manual Mode or Auto Mode, and the screen resolution can be selected using the menu. When more than one supported Dell monitors are connected to open the Quick Settings dialog box. Using the Quick Settings Dialog Clicking Dell Display Manager's notification tray icon to the computer, a specific target monitor...
... check. • Move DDM UI to the monitor to be controlled. • Press Ctrl+Shift+D to adjust basic functions, configure auto mode and access other features. You can select Manual Mode or Auto Mode, and the screen resolution can be selected using the menu. When more than one supported Dell monitors are connected to open the Quick Settings dialog box. Using the Quick Settings Dialog Clicking Dell Display Manager's notification tray icon to the computer, a specific target monitor...