Users Guide
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... Parts and Controls 7 Monitor Specifications 10 Plug-and-Play 25 LCD Monitor Quality and Pixel Policy 25 Setting Up the Monitor 26 Attaching the Stand 26 Using the Tilt, Swivel, and Vertical Extension 28 Adjusting the Rotation Display Settings of Your System 29 Connecting Your Monitor 30 Organizing Your Cables 33 Removing the Monitor Stand 33 Wall Mounting (Optional 34 Operating the Monitor 35 Turning on the Monitor 35 Using the Front Panel Controls 35 Using the OSD Lock function 37 Using the On-Screen Display (OSD) Menu 40...
... Parts and Controls 7 Monitor Specifications 10 Plug-and-Play 25 LCD Monitor Quality and Pixel Policy 25 Setting Up the Monitor 26 Attaching the Stand 26 Using the Tilt, Swivel, and Vertical Extension 28 Adjusting the Rotation Display Settings of Your System 29 Connecting Your Monitor 30 Organizing Your Cables 33 Removing the Monitor Stand 33 Wall Mounting (Optional 34 Operating the Monitor 35 Turning on the Monitor 35 Using the Front Panel Controls 35 Using the OSD Lock function 37 Using the On-Screen Display (OSD) Menu 40...
Users Guide
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.... • 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. The factory measurements from this new Dell U2421HE UltraSharp monitor. The monitor features include: • U2421HE: 60.47 cm (23.8 in.) active area display (Measured diagonally) 1920 x 1080 (16:9) resolution, plus full-screen support for lower resolutions. •...
.... • 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. The factory measurements from this new Dell U2421HE UltraSharp monitor. The monitor features include: • U2421HE: 60.47 cm (23.8 in.) active area display (Measured diagonally) 1920 x 1080 (16:9) resolution, plus full-screen support for lower resolutions. •...
Users Guide
Page 8
... til stikproppens jord. Apparaten skall anslutas till jordat uttag. mm-behind attached VESA cover) compatible wall mount kit (100 mm x 100 mm). 2 Regulatory label Lists the regulatory approvals. 3 Stand release button Release stand from monitor. 4 Security lock slot Secures monitor with security cable lock (sold separately). 5 Mac address, Barcode, serial number, Refer to organize cables by placing them through the slot. Operation is subject to the following...
... til stikproppens jord. Apparaten skall anslutas till jordat uttag. mm-behind attached VESA cover) compatible wall mount kit (100 mm x 100 mm). 2 Regulatory label Lists the regulatory approvals. 3 Stand release button Release stand from monitor. 4 Security lock slot Secures monitor with security cable lock (sold separately). 5 Mac address, Barcode, serial number, Refer to organize cables by placing them through the slot. Operation is subject to the following...
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 U2421HE/U2721DE Video input signals • 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 U2421HE/U2721DE Video input signals • 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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... HDMI cable (Optional) HDMI HDMI Connecting the DP cable DP DP 30 | Setting Up the Monitor NOTE: U2421HE/U2721DE default setting is DP 1.4. No image when using DP connection to the PC" to "product specific problems - To connect your monitor to the computer: 1 Turn off your computer. 2 Connect the DP/USB type-C cable from your monitor to the computer. 3 Switch on your monitor. 4 Select the correct input source at monitor OSD Menu and turn on your computer. A DP 1.1 Graphic card may not display...
... HDMI cable (Optional) HDMI HDMI Connecting the DP cable DP DP 30 | Setting Up the Monitor NOTE: U2421HE/U2721DE default setting is DP 1.4. No image when using DP connection to the PC" to "product specific problems - To connect your monitor to the computer: 1 Turn off your computer. 2 Connect the DP/USB type-C cable from your monitor to the computer. 3 Switch on your monitor. 4 Select the correct input source at monitor OSD Menu and turn on your computer. A DP 1.1 Graphic card may not display...
Users Guide
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... W. NOTE: Remove the rubber plug when using DP out connector. To make use of this feature, your battery, the Dell U2421HE/U2721DE monitor is designed to supply power delivery of your laptop, or the remaining power runtime in your PC Graphics Card must be used as USB Type-C or DisplayPort 1.4, alternatively. • Supports USB Power Delivery (PD), with PowerDelivery) power 45 W 45 W 65 W 65 W 90 W Not supported Setting Up the Monitor | 31...
... W. NOTE: Remove the rubber plug when using DP out connector. To make use of this feature, your battery, the Dell U2421HE/U2721DE monitor is designed to supply power delivery of your laptop, or the remaining power runtime in your PC Graphics Card must be used as USB Type-C or DisplayPort 1.4, alternatively. • Supports USB Power Delivery (PD), with PowerDelivery) power 45 W 45 W 65 W 65 W 90 W Not supported Setting Up the Monitor | 31...
Users Guide
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Please refer to the bandwith of the USB-C source. Connecting the monitor for USB-C Multi-Stream Transport (MST) function DP in USB Type-C DP out USB Type-C NOTE: The maximum number of supported U2721DE via MST is subjected to "product specific problems -No image when using DP out connector. 130 W Not supported Connecting the monitor for RJ45 Cable (Optional) USB Type-C RJ45 USB Type-C 32 | Setting Up the Monitor NOTE: Remove the rubber plug when using USB-C MST".
Please refer to the bandwith of the USB-C source. Connecting the monitor for USB-C Multi-Stream Transport (MST) function DP in USB Type-C DP out USB Type-C NOTE: The maximum number of supported U2721DE via MST is subjected to "product specific problems -No image when using DP out connector. 130 W Not supported Connecting the monitor for RJ45 Cable (Optional) USB Type-C RJ45 USB Type-C 32 | Setting Up the Monitor NOTE: Remove the rubber plug when using USB-C MST".
Users Guide
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... people from powering off . Menu and Power buttons lock Operating the Monitor | 37 Using the OSD Lock function With the control buttons on the monitor locked, you want to lock the Menu Buttons? The following table describes the control icons: Options 1 Description Use this icon to lock OSD menu function. 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. Select 'Yes' to the User's Guide. Yes No U2421HE/U2721DE...
... people from powering off . Menu and Power buttons lock Operating the Monitor | 37 Using the OSD Lock function With the control buttons on the monitor locked, you want to lock the Menu Buttons? The following table describes the control icons: Options 1 Description Use this icon to lock OSD menu function. 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. Select 'Yes' to the User's Guide. Yes No U2421HE/U2721DE...
Users Guide
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...you are using the HDMI connector. Use to the factory defaults. 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 42 | Operating the Monitor Use to select the DP input source. Auto Select for USB-C Allows you to set Auto Select for USB Type-C to: • Prompt for Multiple Inputs : always show Switch to USB Type-C video without asking while USB Type-C connected. Select HDMI input when you...
...you are using the HDMI connector. Use to the factory defaults. 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 42 | Operating the Monitor Use to select the DP input source. Auto Select for USB-C Allows you to set Auto Select for USB Type-C to: • Prompt for Multiple Inputs : always show Switch to USB Type-C video without asking while USB Type-C connected. Select HDMI input when you...
Users Guide
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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 Movie Game Color Temp. Operating the Monitor | 43 or Custom Color from your eyes. NOTE: To reduce the risk of eye strain and neck/arm/back/ shoulders pain from using the monitor for long periods of time, we suggest you to : • Set the screen about 20...
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 Movie Game Color Temp. Operating the Monitor | 43 or Custom Color from your eyes. NOTE: To reduce the risk of eye strain and neck/arm/back/ shoulders pain from using the monitor for long periods of time, we suggest you to : • Set the screen about 20...
Users Guide
Page 47
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. Operating the Monitor | 47 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. Operating the Monitor | 47 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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... you to adjust the monitor settings using software on . Enable this feature for best user experience and optimum performance of your computer. Displays the monitor's current settings. Dell UltraSharp 24/27 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 Operating the Monitor | 49 Select Off to turn off this feature. Icon Menu and Submenus Others Description Dell UltraSharp 24/27 Monitor Brightness/Contrast Input Source Color Display Menu...
... you to adjust the monitor settings using software on . Enable this feature for best user experience and optimum performance of your computer. Displays the monitor's current settings. Dell UltraSharp 24/27 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 Operating the Monitor | 49 Select Off to turn off this feature. Icon Menu and Submenus Others Description Dell UltraSharp 24/27 Monitor Brightness/Contrast Input Source Color Display Menu...
Users Guide
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..., remove all digital and the analog cables from the back of the procedures in self-test mode, the power LED remains white. While in this section, follow the Safety Instructions. Dell UltraSharp 24/27 Monitor No DP Cable The display will go into Power Save Mode in 4 minutes. www.dell.com/support/U2421HE www.dell.com/support/U2721DE or Dell UltraSharp 24/27 Monitor U2421HE/U2721DE No USB Type-C Cable The display will continuously scroll through the screen...
..., remove all digital and the analog cables from the back of the procedures in self-test mode, the power LED remains white. While in this section, follow the Safety Instructions. Dell UltraSharp 24/27 Monitor No DP Cable The display will go into Power Save Mode in 4 minutes. www.dell.com/support/U2421HE www.dell.com/support/U2721DE or Dell UltraSharp 24/27 Monitor U2421HE/U2721DE No USB Type-C Cable The display will continuously scroll through the screen...
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. Troubleshooting | 59...
..., 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. Troubleshooting | 59...
Users Guide
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... diagnostics. Ensure the computer is LED light is white not in the power saving mode by moving the mouse or pressing any key on the screen • Use the Power Management feature to the computer is connected properly and is plugged in the video cable connector. Connect the signal cable again, if necessary. • Reset the computer or video player. 60 | Troubleshooting No Input Signal when user controls are pressed No picture, the • Check the signal source.
... diagnostics. Ensure the computer is LED light is white not in the power saving mode by moving the mouse or pressing any key on the screen • Use the Power Management feature to the computer is connected properly and is plugged in the video cable connector. Connect the signal cable again, if necessary. • Reset the computer or video player. 60 | Troubleshooting No Input Signal when user controls are pressed No picture, the • Check the signal source.
Users Guide
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... 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 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. Do not...
... 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 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. Do not...
Users Guide
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... 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. NOTE: If you are unable to set the display resolution to 1920 x 1080 U2421HE)/2560 x 1440(U2721DE) pixels by performing the following steps: 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 classic desktop. Setting Up Your Monitor Setting Display Resolution...
... 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. NOTE: If you are unable to set the display resolution to 1920 x 1080 U2421HE)/2560 x 1440(U2721DE) pixels by performing the following steps: 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 classic desktop. Setting Up Your Monitor Setting Display Resolution...
Users Guide
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... switch to 1920 x 1080 (U2421HE)/2560 x 1440 (U2721DE) again. In Windows 10: 1 Right-click on the desktop and click Personalization. 3 Click Change Display Settings. 4 Click Advanced Settings. 5 Identify your computer or consider purchasing a graphics adapter that supports the video resolution. NVIDIA, AMD, Intel etc.). 6 Refer to the graphic card provider website for updated driver (for example, www.amd.com or www.nvidia.com). 7 After installing...
... switch to 1920 x 1080 (U2421HE)/2560 x 1440 (U2721DE) again. In Windows 10: 1 Right-click on the desktop and click Personalization. 3 Click Change Display Settings. 4 Click Advanced Settings. 5 Identify your computer or consider purchasing a graphics adapter that supports the video resolution. NVIDIA, AMD, Intel etc.). 6 Refer to the graphic card provider website for updated driver (for example, www.amd.com or www.nvidia.com). 7 After installing...
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 After installed, Dell Display Manager runs each time the system starts and places its icon in the menu as below. Information about monitors connected to the system is enabled in the notification tray. Standard U2421HE U2721DE NOTE: Dell Display Manager uses DDC/CI channel to manage a monitor or a group of automatic settings...
.../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 After installed, Dell Display Manager runs each time the system starts and places its icon in the menu as below. Information about monitors connected to the system is enabled in the notification tray. Standard U2421HE U2721DE NOTE: Dell Display Manager uses DDC/CI channel to manage a monitor or a group of automatic settings...