Users Guide
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... Parts and Controls 7 Monitor Specifications 10 Plug-and-Play 24 LCD Monitor Quality and Pixel Policy 24 Setting Up the Monitor 25 Attaching the Stand 25 Using the Tilt, Swivel, and Vertical Extension 27 Adjusting the Rotation Display Settings of Your System 28 Connecting Your Monitor 29 Organizing Your Cables 32 Removing the Monitor Stand 32 Wall Mounting (Optional 33 Operating the Monitor 34 Turning on the Monitor 34 Using the Front Panel Controls 34 Using the OSD Lock function 36 Using the On-Screen Display (OSD) Menu 39...
... Parts and Controls 7 Monitor Specifications 10 Plug-and-Play 24 LCD Monitor Quality and Pixel Policy 24 Setting Up the Monitor 25 Attaching the Stand 25 Using the Tilt, Swivel, and Vertical Extension 27 Adjusting the Rotation Display Settings of Your System 28 Connecting Your Monitor 29 Organizing Your Cables 32 Removing the Monitor Stand 32 Wall Mounting (Optional 33 Operating the Monitor 34 Turning on the Monitor 34 Using the Front Panel Controls 34 Using the OSD Lock function 36 Using the On-Screen Display (OSD) Menu 39...
Users Guide
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... each U2421HE helps enable ultra-smooth color gradation. Delta E ≤ 2 Gray-Scale Tracking Gamma Note: Calibrations were done according to reproduce it or provide a duplicate. • Quick Setup Guide • Safety,Environmental,and Regulatory Information • Factory Calibration Report Product Features The Dell UltraSharp U2421HE/U2721DE monitor has an active matrix, thinfilm transistor (TFT), liquid crystal display (LCD), and LED backlight. DP cable U2421HE Color Calibration Factory Report Every Dell U2421HE...
... each U2421HE helps enable ultra-smooth color gradation. Delta E ≤ 2 Gray-Scale Tracking Gamma Note: Calibrations were done according to reproduce it or provide a duplicate. • Quick Setup Guide • Safety,Environmental,and Regulatory Information • Factory Calibration Report Product Features The Dell UltraSharp U2421HE/U2721DE monitor has an active matrix, thinfilm transistor (TFT), liquid crystal display (LCD), and LED backlight. DP cable U2421HE Color Calibration Factory Report Every Dell U2421HE...
Users Guide
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...: Remove the rubber plug when using the USB Type-C cable. Port with DP 1.4 support the maximum resolution of display via RJ-45. Connect to Windows 10. Connect speakers to the monitor using a M3 x 6 mm (U2721DE)/ M3 x 8 mm (U2421HE) screw (screw not included). Lock the stand to playback audio coming through USB Type-C or DP audio channels. Connect your computer using DP out connector. DP output for DP MST Function". Bottom View 10 1 2 3 4 5 6789 Label 1 2 3 4 5 6&8 7 9 10 Description AC power port HDMI port...
...: Remove the rubber plug when using the USB Type-C cable. Port with DP 1.4 support the maximum resolution of display via RJ-45. Connect to Windows 10. Connect speakers to the monitor using a M3 x 6 mm (U2721DE)/ M3 x 8 mm (U2421HE) screw (screw not included). Lock the stand to playback audio coming through USB Type-C or DP audio channels. Connect your computer using DP out connector. DP output for DP MST Function". Bottom View 10 1 2 3 4 5 6789 Label 1 2 3 4 5 6&8 7 9 10 Description AC power port HDMI port...
Users Guide
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... (cable lock sold separately) Anti-theft stand sold separately) Anti-theft stand lock slot (to panel) lock slot (to 76 Hz 2560 x 1440 at 60 Hz Video display capabilities (DP & USB Type-C playback) 480i, 480p, 576i, 576p, 720p, 1080i, 1080p U2721DE 30 kHz to 90 kHz 56 Hz to panel) * At panel native only, under Custom Mode preset. Resolution Specifications Model U2421HE Horizontal scan range 30 kHz to 83 kHz Vertical...
... (cable lock sold separately) Anti-theft stand sold separately) Anti-theft stand lock slot (to panel) lock slot (to 76 Hz 2560 x 1440 at 60 Hz Video display capabilities (DP & USB Type-C playback) 480i, 480p, 576i, 576p, 720p, 1080i, 1080p U2721DE 30 kHz to 90 kHz 56 Hz to panel) * At panel native only, under Custom Mode preset. Resolution Specifications Model U2421HE Horizontal scan range 30 kHz to 83 kHz Vertical...
Users Guide
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... Specifications Model Video input signals U2421HE/U2721DE • Digital video signal for each differential line Per differential line at 100 ohm impedance • DP/USB Type-C signal input support Input voltage/ frequency/current Inrush current 100-240 VAC / 50 or 60 Hz ± 3 Hz / 1.8 A (maximum) 120 V: 30 A (Max.) 240 V: 60 A (Max.) Physical Characteristics Model Connector type Signal cable type Dimensions (with stand) Height (extended) Height (compressed) Width Depth Dimensions (without stand) Height Width Depth Stand...
... Specifications Model Video input signals U2421HE/U2721DE • Digital video signal for each differential line Per differential line at 100 ohm impedance • DP/USB Type-C signal input support Input voltage/ frequency/current Inrush current 100-240 VAC / 50 or 60 Hz ± 3 Hz / 1.8 A (maximum) 120 V: 30 A (Max.) 240 V: 60 A (Max.) Physical Characteristics Model Connector type Signal cable type Dimensions (with stand) Height (extended) Height (compressed) Width Depth Dimensions (without stand) Height Width Depth Stand...
Users Guide
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... monitor to "product specific problems - Please refer to the computer. 3 Switch on your monitor. 4 Select the correct input source at monitor OSD Menu and turn on your computer. NOTE: U2421HE/U2721DE default setting is DP 1.4. No image when using DP connection to the PC" to change default setting. A DP 1.1 Graphic card may not display normally. Connecting Your Monitor WARNING: Before you begin any of the procedures in this section, follow the Safety Instructions. Connecting the HDMI cable (Optional) HDMI HDMI Connecting...
... monitor to "product specific problems - Please refer to the computer. 3 Switch on your monitor. 4 Select the correct input source at monitor OSD Menu and turn on your computer. NOTE: U2421HE/U2721DE default setting is DP 1.4. No image when using DP connection to the PC" to change default setting. A DP 1.1 Graphic card may not display normally. Connecting Your Monitor WARNING: Before you begin any of the procedures in this section, follow the Safety Instructions. Connecting the HDMI cable (Optional) HDMI HDMI Connecting...
Users Guide
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... W 130 W 45 W 65 W Not supported Not supported 30 | Setting Up the Monitor Connecting the monitor for DP Multi-Stream Transport (MST) function DP DP DP out DP NOTE: Supports the DP MST feature. NOTE: Remove the rubber plug when using DP out connector. To make use of up to 65 W. Rated power (on your laptop. Connecting the USB Type-C cable USB Type-C USB Type-C The USB Type-C port on laptops that have...
... W 130 W 45 W 65 W Not supported Not supported 30 | Setting Up the Monitor Connecting the monitor for DP Multi-Stream Transport (MST) function DP DP DP out DP NOTE: Supports the DP MST feature. NOTE: Remove the rubber plug when using DP out connector. To make use of up to 65 W. Rated power (on your laptop. Connecting the USB Type-C cable USB Type-C USB Type-C The USB Type-C port on laptops that have...
Users Guide
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Connecting the monitor for USB-C Multi-Stream Transport (MST) function DP in -box standard accessory. Setting Up the Monitor | 31 Connecting the monitor for RJ45 Cable (Optional) USB Type-C RJ45 USB Type-C NOTE: RJ45 cable is subjected to "product specific problems -No image when using DP out connector. NOTE: Remove the rubber plug when using USB-C MST". Please refer to the bandwith of supported U2721DE via MST is non in USB Type-C DP out USB Type-C NOTE: The maximum number of the USB-C source.
Connecting the monitor for USB-C Multi-Stream Transport (MST) function DP in -box standard accessory. Setting Up the Monitor | 31 Connecting the monitor for RJ45 Cable (Optional) USB Type-C RJ45 USB Type-C NOTE: RJ45 cable is subjected to "product specific problems -No image when using DP out connector. NOTE: Remove the rubber plug when using USB-C MST". Please refer to the bandwith of supported U2721DE via MST is non in USB Type-C DP out USB Type-C NOTE: The maximum number of the USB-C source.
Users Guide
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... buttons, the following message will appear: Dell UltraSharp 24/27 Monitor Are you sure you can prevent people from accessing the controls. Dell UltraSharp 24/27 Monitor Brightness/Contrast Input Source Color Display Menu Personalize Others Language Rotation Transparency Timer Lock Reset Menu Menu Buttons Power Button Menu + Power Buttons Disable 1. Yes No U2421HE/U2721DE 2. Select 'Yes' to lock OSD menu and power button from powering off . It also prevents accidental activation in multiple monitors side-by-side setup. Power button lock 3 Use this icon to the User's Guide...
... buttons, the following message will appear: Dell UltraSharp 24/27 Monitor Are you sure you can prevent people from accessing the controls. Dell UltraSharp 24/27 Monitor Brightness/Contrast Input Source Color Display Menu Personalize Others Language Rotation Transparency Timer Lock Reset Menu Menu Buttons Power Button Menu + Power Buttons Disable 1. Yes No U2421HE/U2721DE 2. Select 'Yes' to lock OSD menu and power button from powering off . It also prevents accidental activation in multiple monitors side-by-side setup. Power button lock 3 Use this icon to the User's Guide...
Users Guide
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... USB Type-C Video Input message for user to choose whether to switch or not. • Yes: The monitor always switch to select Auto Select, the monitor scans for USB-C Allows you are using the HDMI connector. Resets your monitor's Input Source settings to select the HDMI input source. Dell UltraSharp 24/27 Monitor Brightness/Contrast Input Source Color Display Menu Personalize Others Preset Modes Input Color Format Reset Color Standard RGB Operating the Monitor | 41 Use to the factory defaults. Auto Select for available input sources. Reset Input Source Color...
... USB Type-C Video Input message for user to choose whether to switch or not. • Yes: The monitor always switch to select Auto Select, the monitor scans for USB-C Allows you are using the HDMI connector. Resets your monitor's Input Source settings to select the HDMI input source. Dell UltraSharp 24/27 Monitor Brightness/Contrast Input Source Color Display Menu Personalize Others Preset Modes Input Color Format Reset Color Standard RGB Operating the Monitor | 41 Use to the factory defaults. Auto Select for available input sources. Reset Input Source Color...
Users Guide
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... your eyes. • Blink frequently to moisten or rewet your eyes when working with slider set at 5,000K or cooler with blue tint with the monitor. • Take regular and frequent breaks for 20 minutes every two hours. • Look away from your eyes. Dell UltraSharp 24/27 Monitor Brightness/Contrast Input Source Color Display Menu Personalize Others Preset Modes Input Color Format Reset Color Standard ComfortView Multiscreen Match...
... your eyes. • Blink frequently to moisten or rewet your eyes when working with slider set at 5,000K or cooler with blue tint with the monitor. • Take regular and frequent breaks for 20 minutes every two hours. • Look away from your eyes. Dell UltraSharp 24/27 Monitor Brightness/Contrast Input Source Color Display Menu Personalize Others Preset Modes Input Color Format Reset Color Standard ComfortView Multiscreen Match...
Users Guide
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Dell UltraSharp 24/27 Monitor Brightness/Contrast Input Source Color Display Menu Personalize Others Language Rotation Transparency Timer Lock Reset Menu Menu Buttons Power Button Menu + Power Buttons Disable Reset Menu • Menu Buttons: Through OSD to lock the Menu buttons. • Power Button: Through OSD to lock the Power button. • Menu + Power Buttons: Through OSD to factory defaults. 46 | Operating the Monitor Restore the menu settings to lock the all of Menu and Power buttons. • Disable: Press and hold the button on the left of the power button for 4 sec...
Dell UltraSharp 24/27 Monitor Brightness/Contrast Input Source Color Display Menu Personalize Others Language Rotation Transparency Timer Lock Reset Menu Menu Buttons Power Button Menu + Power Buttons Disable Reset Menu • Menu Buttons: Through OSD to lock the Menu buttons. • Power Button: Through OSD to lock the Power button. • Menu + Power Buttons: Through OSD to factory defaults. 46 | Operating the Monitor Restore the menu settings to lock the all of Menu and Power buttons. • Disable: Press and hold the button on the left of the power button for 4 sec...
Users Guide
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... Others Factory Reset 48 | Operating the Monitor Select Off to turn off this feature for best user experience and optimum performance of your computer. Displays the monitor's current settings. Icon Menu and Submenus Others Description Dell UltraSharp 24/27 Monitor Brightness/Contrast Input Source Color Display Menu Personalize Others Display Info DDC/CI LCD Conditioning Firmware Service Tag Reset Others Factory Reset On O M2T101 H8CJ2NF ENERGY STAR® Display Info DDC/CI Select this option to adjust the OSD settings...
... Others Factory Reset 48 | Operating the Monitor Select Off to turn off this feature for best user experience and optimum performance of your computer. Displays the monitor's current settings. Icon Menu and Submenus Others Description Dell UltraSharp 24/27 Monitor Brightness/Contrast Input Source Color Display Menu Personalize Others Display Info DDC/CI LCD Conditioning Firmware Service Tag Reset Others Factory Reset On O M2T101 H8CJ2NF ENERGY STAR® Display Info DDC/CI Select this option to adjust the OSD settings...
Users Guide
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... Self-Test operation, remove all digital and the analog cables from the back of computer. 3 Turn on -screen (against a black background), if the monitor cannot sense a video signal and is functioning properly. 54 | Troubleshooting Dell UltraSharp 24/27 Monitor No DP Cable The display will go into Power Save Mode in this section, follow the Safety Instructions. then turn on both your computer and the monitor. 2 Unplug the video cable from the back...
... Self-Test operation, remove all digital and the analog cables from the back of computer. 3 Turn on -screen (against a black background), if the monitor cannot sense a video signal and is functioning properly. 54 | Troubleshooting Dell UltraSharp 24/27 Monitor No DP Cable The display will go into Power Save Mode in this section, follow the Safety Instructions. then turn on both your computer and the monitor. 2 Unplug the video cable from the back...
Users Guide
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..., see Dell Support site at: www.dell.com/support/monitors. • Reset the monitor to factory settings. • Adjust brightness and contrast controls via OSD. • Do not perform any troubleshooting steps. • Contact Dell immediately. • Ensure that the video cable connecting the monitor to the computer is connected properly and is secure. • Reset the monitor to factory settings. • Perform monitor self-test feature check to determine if the intermittent problem occurs in selftest mode. 56 | Troubleshooting
..., see Dell Support site at: www.dell.com/support/monitors. • Reset the monitor to factory settings. • Adjust brightness and contrast controls via OSD. • Do not perform any troubleshooting steps. • Contact Dell immediately. • Ensure that the video cable connecting the monitor to the computer is connected properly and is secure. • Reset the monitor to factory settings. • Perform monitor self-test feature check to determine if the intermittent problem occurs in selftest mode. 56 | Troubleshooting
Users Guide
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... Display menu OSD. • Reset the monitor to factory settings. • Turn off the monitor, unplug the monitor power cable, plug it back, and then turn off the monitor at all times when not in use (for bent or broken pins in the video cable connector. Troubleshooting | 57 Common Symptoms Missing Color Wrong Color Image retention from the static image displayed appears on the application. • Adjust R/G/B value under Custom Color in Color menu OSD. • Change the Input Color Format to PC RGB...
... Display menu OSD. • Reset the monitor to factory settings. • Turn off the monitor, unplug the monitor power cable, plug it back, and then turn off the monitor at all times when not in use (for bent or broken pins in the video cable connector. Troubleshooting | 57 Common Symptoms Missing Color Wrong Color Image retention from the static image displayed appears on the application. • Adjust R/G/B value under Custom Color in Color menu OSD. • Change the Input Color Format to PC RGB...
Users Guide
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... 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 HBR2, suggest to use USB Type-C to DP cable to turn on No image when using DP connection to the PC Black screen No image when using USB Type-C MST Black screen or 2nd DUT is connected, keeps the power button On. 58 | Troubleshooting Download and install the latest graphics card driver...
... 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 HBR2, suggest to use USB Type-C to DP cable to turn on No image when using DP connection to the PC Black screen No image when using USB Type-C MST Black screen or 2nd DUT is connected, keeps the power button On. 58 | Troubleshooting Download and install the latest graphics card driver...
Users Guide
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... (U2721DE) again. NOTE: If you are using, and follow the given steps. Dell computer 1 Go to www.dell.com/support, enter your service tag, and download the latest driver for your graphics card. 2 After installing the drivers for your graphics driver. For Windows Vista and Windows 7, skip this step. 2 Right-click on the desktop and click Display Settings. 2 Click Advanced display settings. 3 Click the dropdown list of the Screen Resolution...
... (U2721DE) again. NOTE: If you are using, and follow the given steps. Dell computer 1 Go to www.dell.com/support, enter your service tag, and download the latest driver for your graphics card. 2 After installing the drivers for your graphics driver. For Windows Vista and Windows 7, skip this step. 2 Right-click on the desktop and click Display Settings. 2 Click Advanced display settings. 3 Click the dropdown list of the Screen Resolution...
Users Guide
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.... 3 Click Change Display Settings. 4 Click Advanced Settings. 5 Identify your computer or consider purchasing a graphics adapter that supports the video resolution. Non-Dell computer In Windows Vista, Windows 7, Windows 8 or Windows 8.1: 1 For Windows 8 or Windows 8.1 only, select the Desktop tile to switch to 1920 x 1080 (U2421HE)/2560 x 1440 (U2721DE) again. For Windows Vista and Windows 7, skip this step. 2 Right-click on the desktop and click Display Settings. 2 Click Advanced display settings. 3 Click Display adapter properties. 4 Identify...
.... 3 Click Change Display Settings. 4 Click Advanced Settings. 5 Identify your computer or consider purchasing a graphics adapter that supports the video resolution. Non-Dell computer In Windows Vista, Windows 7, Windows 8 or Windows 8.1: 1 For Windows 8 or Windows 8.1 only, select the Desktop tile to switch to 1920 x 1080 (U2421HE)/2560 x 1440 (U2721DE) again. For Windows Vista and Windows 7, skip this step. 2 Right-click on the desktop and click Display Settings. 2 Click Advanced display settings. 3 Click Display adapter properties. 4 Identify...
Display Manager Users Guide
Page 4
.../27 Monitor Brightness/Contrast Display Info Input Source DDC/CI On Color LCD Conditioning O Display Firmware Menu Service Tag Personalize Reset Others Others Factory Reset 4 | Overview Information about monitors connected to the system is a Microsoft Windows application used to communicate with your monitor. Ensure that DDC/CI is enabled in the notification tray. Dell U2421HE - Standard U2421HE U2721DE NOTE: Dell Display Manager uses DDC/CI channel to manage a monitor or a group of automatic settings, energy management, window organization, image...
.../27 Monitor Brightness/Contrast Display Info Input Source DDC/CI On Color LCD Conditioning O Display Firmware Menu Service Tag Personalize Reset Others Others Factory Reset 4 | Overview Information about monitors connected to the system is a Microsoft Windows application used to communicate with your monitor. Ensure that DDC/CI is enabled in the notification tray. Dell U2421HE - Standard U2421HE U2721DE NOTE: Dell Display Manager uses DDC/CI channel to manage a monitor or a group of automatic settings, energy management, window organization, image...