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Dell UltraSharp 24 User Manual
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Dell UltraSharp 24 User Manual

Usb-c hub monitor
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Dell UltraSharp 24
USB-C Hub Monitor - U2421E
User's Guide
Model: U2421E
Regulatory model: U2421Et

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Summary of Contents for Dell UltraSharp 24

  • Page 1 Dell UltraSharp 24 USB-C Hub Monitor - U2421E User’s Guide Model: U2421E Regulatory model: U2421Et...
  • Page 2 WARNING: A WARNING indicates a potential for property damage, personal injury, or death. Copyright © 2020 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.

  • Page 3: Table Of Contents

    Contents Safety instructions......5 About your monitor ......6 Package contents .
  • Page 4 FCC notices (U.S. only) and other regulatory information . . . 70 Contacting Dell ......70 EU product database for energy label and product information sheet .

  • Page 5: Safety Instructions

    Safety instructions WARNING: Use of controls, adjustments, or procedures other than those specified in this documentation may result in exposure to shock, electrical hazards, and/or mechanical hazards. • Place the monitor on a solid surface and handle it carefully. The screen is fragile and can be damaged if dropped or hit sharply.

  • Page 6: About Your Monitor

    About your monitor Package contents Your monitor ships with the components shown in the table below. If any component is missing, contact Dell. For more information, see Contact Dell. NOTE: Some components may be optional and may not ship with your monitor.

  • Page 7: Product Features

    Calibrations were done according to Dell approved test procedures using calibrated equipment at the factory production line. This Report is provided only with and for this new Dell U2421E UltraSharp monitor. Results may vary with other test equipment, setups and test patterns. Please retain this Report for your reference as Dell is unable to reproduce it or provide a duplicate.

  • Page 8: Identifying Parts And Controls

    Identifying parts and controls Front view Label Description Power LED indicator Solid white light indicates the monitor is turned on and functioning normally. Blinking white light indicates the monitor is in Standby Mode. About your monitor...

  • Page 9: Back View

    For more information, see Operating the Monitor. Mac address, Barcode, serial Refer to this label if you need to contact Dell number, and Service Tag label for technical support. The Service Tag is a unique alphanumeric identifier that enables Dell service technicians to identify the hardware components in your computer and access warranty information.

  • Page 10: Bottom View

    Bottom view 4 5 6 7 8 9 10 Label Description Security lock slot Secures monitor with security cable lock (sold separately). Power connector Connect the power cable. HDMI port Connect your computer with the HDMI cable. DisplayPort in Connect your computer with the DisplayPort cable. USB Type-C/ Connect to your computer using the USB Type-C cable.

  • Page 11: Monitor Specifications

    RJ-45 connector Connect Internet. You can surf Internet via RJ45 only after you have connected the USB cable(Type-A to Type-C or Type-C to Type-C) from the computer to the monitor. USB Type-C Port with icon supports 5 V/ 3 A. downstream port Connect your USB device.

  • Page 12: Resolution Specifications

    -5° to 21° Swivel -45° to 45° Pivot -90° to 90° Cable management 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.

  • Page 13: Preset Display Modes

    Maximum preset resolution 1920 x 1200 at 60 Hz Video display capabilities (HDMI & DP & USB 480i, 480p, 576i, 560p, 720p, 1080i, Type-C alternate mode) 1080p Preset display modes Display mode Horizontal Vertical Pixel Sync polarity frequency frequency clock (Horizontal/ (kHz) (Hz)

  • Page 14: Electrical Specifications

    HBR3 HBR2 Electrical specifications Video input signals • Digital video signal for each differential line Per differential line at 100 ohm impedance • DP/HDMI/USB Type-C signal input support Input voltage/ frequency/current 100-240 VAC / 50 or 60 Hz ± 3 Hz / 2.1 A (maximum) Inrush current 120 V: 42 A (Max.)

  • Page 15: Physical Characteristics

    Physical characteristics Connector type • DP connector (include DP in and DP out) • HDMI connector • USB Type-C connector • Audio line-out • RJ45 connector • USB Type-C downstream connector x 1 (Port with icon supports 5 V/3 A) •...

  • Page 16: Environmental Characteristics

    Weight without stand assembly 4.0 kg (8.8 lb) (For wall mount or VESA mount considerations - no cables) Weight of stand assembly 1.7 kg (3.7 lb) Environmental characteristics Compliant Standards • ENERGY STAR certified Monitor. • EPEAT registered where applicable. EPEAT registration varies by country. www.epeat.net for registration status by country.

  • Page 17: Pin Assignments

    Pin assignments DP port (in) Pin number 20-pin side of the connected signal cable ML3(n) ML3(p) ML2(n) ML2(p) ML1(n) ML1(p) ML0(n) ML0(p) CONFIG1 CONFIG2 AUX CH (p) AUX CH (n) Hot Plug Detect Return DP_PWR About your monitor...
  • Page 18 DP port (out) Pin number 20-pin side of the connected signal cable ML0(p) ML0(n) ML1(p) ML1(n) ML2(p) ML2(n) ML3(p) ML3(n) CONFIG1 CONFIG2 AUX CH(p) AUX CH(n) Hot Plug Detect Return DP_PWR About your monitor...
  • Page 19 HDMI port Pin number 19-pin side of the connected signal cable TMDS DATA 2+ TMDS DATA 2 SHIELD TMDS DATA 2- TMDS DATA 1+ TMDS DATA 1 SHIELD TMDS DATA 1- TMDS DATA 0+ TMDS DATA 0 SHIELD TMDS DATA 0- TMDS CLOCK+ TMDS CLOCK SHIELD TMDS CLOCK-...
  • Page 20 USB Type-C port Signal Signal SSTXp1 SSRXp1 SSTXn1 SSRXn1 VBUS VBUS SBU2 SBU1 VBUS VBUS SSRXn2 SSTXn2 SSRXp2 SSTXp2 About your monitor...
  • Page 21 Universal Serial Bus (USB) This section gives you information about the USB ports available on your monitor. NOTE: Up to 2 A on USB downstream port (port with battery icon) with BC 1.2 compliance devices; up to 0.9 A on the other 2 USB downstream ports; Up to 3 A on USB Type-C downstream port (port with icon) with 5 V/3 A compliance devices.
  • Page 22 GREEN Driver installation Install the Realtek USB GBE Ethernet Controller Driver available for your system. This is available for download at www.dell.com/support under the “Driver and download” section. Network (RJ45) data rate via USB-C max speed is 1000 Mbps. NOTE: This LAN port is 1000Base-T IEEE 802.3az compliant, supporting Mac...
  • Page 23 RJ45 Connector LED status: Right LED Left LED Color Description Right LED Amber or Green Speed indicator: • Amber On - 1000 Mbps • Green On - 100 Mbps • Off - 10 Mbps Left LED Green Link / Activity indicator: •...

  • Page 24: Plug-And-Play

    During the LCD monitor manufacturing process, it is not uncommon for one or more pixels to become fixed in an unchanging state which are hard to see and do not affect the display quality or usability. For more information on LCD Monitor Pixel Policy, see Dell support site at: www.dell.com/pixelguidelines. About your monitor...

  • Page 25: Ergonomics

    Ergonomics CAUTION: Improper or prolonged usage of keyboard may result in injury. CAUTION: Viewing the monitor screen for extended periods of time may result in eye strain. For comfort and efficiency, observe the following guidelines when setting up and using your computer workstation: •...
  • Page 26 • Vary your work activities. Try to organize your work so that you do not have to sit and work for extended periods of time. Try to stand or get up and walk around at regular intervals. • Keep the area under your desk clear of obstructions and cables or power cords that may interfere with comfortable seating or present a potential trip hazard.

  • Page 27: Handling And Moving Your Display

    Handling and moving your display To ensure the monitor is handled safely when lifting or moving it, follow the guidelines mentioned below: • Before moving or lifting the monitor, turn off your computer and the monitor. • Disconnect all cables from the monitor. •...

  • Page 28: Maintenance Guidelines

    • When lifting or moving the monitor, do not turn the monitor upside down while holding the stand base or stand riser. This may result in accidental damage to the monitor or cause personal injury. Maintenance guidelines Cleaning your monitor WARNING: Before cleaning the monitor, unplug the monitor power cable from the electrical outlet.

  • Page 29: Setting Up The Monitor

    Setting up the monitor Connecting the stand NOTE: The stand riser and stand base are detached when the monitor is shipped from the factory. NOTE: The following instructions are applicable only for the stand that was shipped with your monitor. If you are connecting a stand that you purchased from any other source, follow the set up instructions that were included with the stand.
  • Page 30 4. Open the protective cover on the monitor to access the VESA slot on the monitor. 5. Slide the tabs on the stand riser into the slots on the display back cover and lower the stand assembly to snap it into place. Setting up the monitor...
  • Page 31 6. Hold the stand riser and lift the monitor carefully, then place it on a flat surface. NOTE: Hold the stand riser firmly when lifting the monitor to avoid any accidental damage. 7. Lift the protective cover from the monitor. Setting up the monitor...

  • Page 32: Using The Tilt, Swivel, And Vertical Extension

    Using the tilt, swivel, and vertical extension NOTE: The following instructions are applicable only for the stand that was shipped with your monitor. If you are connecting a stand that you purchased from any other source, follow the set up instructions that were included with the stand.

  • Page 33: Configuring The Display Settings On Your Computer After Rotation

    After you have rotated the display, complete the procedure given below to configure the display settings on your computer. NOTE: If you are using the monitor with a non-Dell computer, go to the graphics card manufacturer’s website or your computer manufacturer website for information on how to rotate the contents of your display.

  • Page 34: Connecting Your Monitor

    Connecting your monitor WARNING: Before you begin any of the procedures in this section, follow Safety Instructions. To connect your monitor to the computer: 1. Turn off your computer. 2. Connect the DisplayPort or HDMI cable, and the USB Type-C cable from your monitor to the computer.
  • Page 35 Connecting the DP cable Connecting the monitor for DP Multi-Stream Transport (MST) function DP out NOTE: Supports the DP MST feature. To make use of this feature, your PC Graphics Card must be certified to at least DP1.2 with MST option. NOTE: Remove the rubber plug when using DP out connector.
  • Page 36 Supports USB Power Delivery (PD), with profiles up to 90 W. NOTE: Regardless of the power requirement/actual power consumption of your laptop, or the remaining power runtime in your battery, the Dell U2421E monitor is designed to supply power delivery of up to 90 W to your laptop.
  • Page 37 Connecting the monitor for USB-C Multi-Stream Transport (MST) function DP in DP out USB Type-C USB Type-C NOTE: The maximum number of supported U2421E via MST is subjected to the bandwith of the USB-C source. Please refer to “product specific problems – No image when using USB Type-C MST”.

  • Page 38: Organizing Your Cables

    Organizing your cables After attaching all necessary cables to your monitor and computer, (see Connecting Your Monitor for cable attachment) organize all cables as shown above. Securing your monitor using Kensington lock (optional) The security lock slot is located at the bottom of the monitor. (See Security lock slot) For more information on using the Kensington lock (purchased separately), see the...

  • Page 39: Removing The Monitor Stand

    Removing the monitor stand CAUTION: To prevent scratches on the LCD screen when removing the stand, ensure that the monitor is placed on a soft, clean surface. NOTE: The following instructions are applicable only for the stand that was shipped with your monitor. If you are connecting a stand that you purchased from any other source, follow the set up instructions that were included with the stand.

  • Page 40: Wall Mounting (Optional)

    Wall mounting (Optional) NOTE: Use M4 x 10 mm screws to connect the monitor to the wall- mounting kit. Refer to the instructions that come with the VESA-compatible wall mounting kit. 1. Place the monitor on a soft cloth or cushion on a stable flat table. 2.

  • Page 41: Operating The Monitor

    Operating the monitor Power on the monitor Press the button to turn on the monitor. Using the joystick control Use the joystick control on the rear of the monitor to make OSD adjustments. 1. Press the joystick button to launch the OSD main menu. 2.

  • Page 42: Using The Rear-Panel Controls

    Using the rear-panel controls Use the joystick control on the rear of the monitor to adjust the display settings. As you use the button to adjust the settings, an OSD shows the numeric values of each feature as they change. Display Info The following table describes the rear-panel buttons: Options...

  • Page 43: Using The Osd Lock Function

    Using the OSD lock function You can lock the front-panel control buttons to prevent access to the OSD menu and/ or power button. Use the Lock menu to lock the button(s). 1. Select one of the following options. 2. The following message appears. 3.
  • Page 44 Use the Joystick to lock the button(s). Press the left directional navigation of Joystick for four seconds, a menu appears on the screen. Select one of the following options: Options Description Select this option to lock OSD menu function. Menu Button lock Use this option to lock power button.
  • Page 45 To unlock the button(s). Press the left directional navigation of Joystick for four seconds until a menu appears on the screen. The following table describes the options to unlock the front-panel control buttons. Options Description Use this option to unlock OSD menu function. Menu Button unlock Use this option to unlock power button to turn off the monitor.

  • Page 46: Front-Panel Button

    Front-panel button Use the buttons on the front of the monitor to adjust the image settings. Front Panel Description Use the Up (increase) and Down (decrease) buttons to adjust items in the OSD menu. Down Use the Previous button to go back to the previous menu.

  • Page 47: Using The On-Screen Display (Osd) Menu

    Using the On-Screen Display (OSD) Menu Accessing the menu system Icon Menu and Description Submenus Brightness/ Use this menu to activate Brightness/Contrast adjustment. Contrast Brightness Brightness adjusts the luminance of the backlight (minimum 0; maximum 100). Move the joystick up to increase brightness. Move the joystick down to decrease brightness.
  • Page 48 Icon Menu and Description Submenus Input Source Use the Input Source menu to select between different video inputs that are connected to your monitor. USB-C Select USB-C 90 W input when you are using the 90 W USB-C 90 W connector. Press the joystick button to confirm the selection.
  • Page 49 Icon Menu and Description Submenus Color Use the Color menu to adjust the color setting mode. Preset Modes When you select Preset Modes, 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 reduce blue light output and create a more relaxing and less stimulating image while reading content on the screen.
  • Page 50 Icon Menu and Description Submenus Input Color Allows you to set the video input mode to: Format • RGB: Select this option if your monitor is connected to a computer (or DVD player) using the USB Type-C, DP, HDMI cable. •...
  • Page 51 Icon Menu and Description Submenus Display Use the Display menu to adjust image. Aspect Ratio Adjust the image ratio to Wide 16:10, 4:3, 5:4. Sharpness Makes the image look sharper or softer. Move the joystick up and down to adjust the sharpness from ‘0’...
  • Page 52 Icon Menu and Description Submenus Menu Select this option to adjust the settings of the OSD, such as the languages of the OSD, the amount of time the menu remains on screen, and so on. Language Set the OSD display to one of eight languages. (English, Spanish, French, German, Brazilian Portuguese, Russian, Simplified Chinese, or Japanese).
  • Page 53 Icon Menu and Description Submenus Lock With the control buttons on the monitor locked, you can prevent people from accessing the controls. It also prevents accidental activation in multiple monitors side-by-side setup. • Menu Buttons: Through OSD to lock the Menu buttons. •...
  • Page 54 Icon Menu and Description Submenus Personalize Shortcut key 1 Shortcut key Select from Preset Modes, Brightness/Contrast, Input Shortcut key Source, Aspect Ratio, Rotation, Display Info set as shortcut key. Shortcut key Shortcut key Power Button Allows you to set the state of the power light to save energy.
  • Page 55 Icon Menu and Description Submenus Others Select this option to adjust the OSD settings such as the DDC/CI, LCD conditioning, and so on. Display Info Displays the monitor’s current settings. DDC/CI DDC/CI (Display Data Channel/Command Interface) allows your monitor parameters (brightness, color balance, and etc.) to be adjustable via the software on your computer.
  • Page 56 Displays the firmware version of your monitor. Service Tag Displays the Service Tag. The Service Tag is a unique alphanumeric identifier that allows Dell to identify the product specifications and access warranty information. NOTE: The Service Tag is also printed on a label located at the back of the cover.

  • Page 57: Osd Warning Messages

    OSD warning messages When the monitor does not support a particular resolution mode, you can see the following message: This means that the monitor cannot synchronize with the signal that it is receiving from the computer. See Monitor Specifications for the Horizontal and Vertical frequency ranges addressable by this monitor.
  • Page 58 A message is displayed while the cable supporting DP alternate mode is connected to the monitor under the following conditions: • When Auto Select for USB-C is set to Prompt for Multiple Inputs. • When the USB-C cable is connected to the monitor. Select OSD items of Factory Reset in Other feature, the following message will appear: When you select ‘Yes‘...
  • Page 59 Select OSD items of On in Standby Mode in Personalize feature, the following message will appear: If adjust the Brightness level above the default level over 75%, the following message will appear: • When user selects “Yes”, the power message is displayed only once. •...
  • Page 60 If either USB Type-C, DP, HDMI input is selected and the corresponding cable is not connected, a floating dialog box as shown below appears. Troubleshooting for more information. Operating the monitor...

  • Page 61: Setting The Maximum Resolution

    Depending on your computer, complete one of the following procedures: If you have a Dell desktop or portable computer: • Go to http://www.dell.com/support, enter your service tag, and download the latest driver for your graphics card. If you are using a non-Dell computer (laptop or desktop): •...

  • Page 62: Troubleshooting

    Troubleshooting WARNING: Before you begin any of the procedures in this section, follow Safety Instructions. Self-test Your monitor provides a self-test feature that allows you to check whether your monitor is functioning properly. If your monitor and computer are properly connected but the monitor screen remains dark, run the monitor self-test by performing the following steps: 1.

  • Page 63: Built-In Diagnostics

    5. Turn off your monitor and reconnect the video cable; then turn on both your computer and the monitor. If your monitor screen remains blank after you use the previous procedure, check your video controller and computer, because your monitor is functioning properly. Built-in diagnostics Your monitor has a built-in diagnostic tool that helps you determine if the screen abnormality you are experiencing is an inherent problem with your monitor, or with your...

  • Page 64: Common Problems

    • Cycle power on-off. spots • Pixel that is permanently off is a natural defect that can occur in LCD technology. • For more information on Dell Monitor Quality and Pixel Policy, see Dell Support site at: www.dell.com/pixelguidelines. Stuck-on Pixels LCD screen has •...

  • Page 65: Product Specific Problems

    Common What You Possible Solutions Symptoms Experience Intermittent Monitor • Ensure that the video cable connecting the Problems malfunctions on monitor to the computer is connected properly & off and is secure. • Reset the monitor to factory settings. • Perform monitor self-test feature check to determine if the intermittent problem occurs in self-test mode.
  • Page 66 Problem What you Possible solutions experience Cannot adjust OSD does not • Turn off the monitor, unplug the monitor power the monitor appear on the cable, plug it back, and then turn on the monitor. with the screen buttons on the front panel No Input Signal No picture, the...
  • Page 67 USB Type-C connection. • Ensure that you use only Dell approved adapter or the adapter that comes with the product. • Ensure that the USB Type-C cable is not damaged.

  • Page 68: Universal Serial Bus (Usb) Specific Problems

    Problem What you Possible solutions experience The LAN port is OS setting • Ensure that the latest BIOS and drivers for your not functioning or cable computer are installed on your computer. connection • Ensure that the RealTek Gigabit Ethernet issue Controller is installed in the Windows Device Manager.
  • Page 69 Specific What You Possible Solutions Symptoms Experience SuperSpeed SuperSpeed • Check that your computer is USB 3.0-capable. USB 3.2 Gen USB 3.2 Gen • Some computers have USB 3.0, USB 2.0, and 1 interface is 1 peripherals USB 1.1 ports. Ensure that the correct USB port slow.

  • Page 70: Appendix

    3. Click Contact Us next to the country dropdown. 4. Select the appropriate service or support link based on your need. 5. Choose the method of contacting Dell that is convenient for you. Appendix...

This manual is also suitable for:

U2421eU2421et

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