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Dell S2421Ho User Manual
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Dell S2421Ho User Manual

Dell S2421Ho User Manual

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Dell S2421HN/S2721HN/S2421NX/
S2721NX Monitor
User's Guide
Monitor Model: S2421HN/S2721HN/S2421NX/S2721NX
Regulatory Model: S2421Ht/S2721Ht/S2421Ho/S2721Ho

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  • Page 1 Dell S2421HN/S2721HN/S2421NX/ S2721NX Monitor User’s Guide Monitor Model: S2421HN/S2721HN/S2421NX/S2721NX Regulatory Model: S2421Ht/S2721Ht/S2421Ho/S2721Ho...
  • Page 2 1111244653 1111244655 Copyright © 2022-2023 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. 2023 – 08 Rev. A03...

  • 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 55 Contacting Dell..... . . 55 EU product database for energy label and product information sheet .

  • Page 5: Safety Instructions

    Safety instructions CAUTION: 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

    Package contents Your monitor ships with the components shown below. Ensure that you have received all the components and see Contacting Dell if anything is missing. NOTE: Some components may be optional and may not ship with your monitor. Some features may not be available in certain countries.
  • Page 7 © 20 2 0 Dell In c . or i t s subsidiarie 2 02 0- 0 7 ww w . d ell . c om / co n t a c t dell Dell .com /S 2 421H Dell .com / S 2 721H 7 4 6 .

  • Page 8: Product Features

    Product features The Dell S2421HN/S2421NX/S2721HN/S2721NX monitor has an active matrix, Thin Film Transistor (TFT), Liquid Crystal Display (LCD), and LED backlight. The monitor features include: • S2421HN/S2421NX: 60.45 cm (23.80 in.) active area display (measured diagonally) 1920 x 1080 (16:9) resolution, plus full-screen support for lower resolutions.

  • Page 9: Identifying Parts And Controls

    Identifying parts and controls Front view S2421HN/S2721HN S2421NX/S2721NX Label Description Function buttons For more information, see Operating the monitor. Power on/off button To turn the monitor on or off. (with LED indicator) About your monitor...

  • Page 10: Back View

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

  • Page 11: Bottom View

    Bottom view 3 4 5 S2421HN/S2721HN 3 4 5 S2421NX/S2721NX Label Description Security lock slot Secures monitor with security cable lock (sold separately). Power connector Connect the power cable (shipped with your monitor). HDMI port 1 Connect your computer with HDMI cable. HDMI port 2 Connect your computer with HDMI cable.

  • Page 12: Monitor Specifications

    Monitor specifications Model S2421HN/S2421NX S2721HN/S2721NX Screen type Active matrix - TFT LCD Panel type In-plane switching technology Aspect ratio 16:9 Viewable image dimensions: Diagonal 60.45 cm (23.8 in.) 68.6 cm (27 in.) Active Area: Horizontal 527.04 mm (20.75 in.) 597.89 mm (23.54 in.) Vertical 296.46 mm (11.67 in.) 336.31 mm (13.24 in.)

  • Page 13: Resolution Specifications

    Swivel Pivot Cable management Dell Display Manager Easy Arrange and other key features (DDM)Compatibility Security Security lock slot (cable lock sold separately) At panel native resolution only, under Custom Mode preset. Resolution specifications Model S2421HN/S2421NX/S2721HN/S2721NX Horizontal scan range 30 kHz to 83 kHz...

  • Page 14: Preset Display Modes

    Preset display modes S2421HN/S2421NX/S2721HN/S2721NX Display mode Horizontal Vertical Pixel clock Sync polarity frequency frequency (MHz) (Horizontal/ (kHz) Vertical) (Hz) VGA, 720 x 400 31.5 70.0 28.3 VGA, 640 x 480 31.5 60.0 25.2 VESA, 640 x 480 37.5 75.0 31.5 VESA, 800 x 600 37.9 60.0...

  • Page 15: Electrical Specifications

    Electrical specifications Model S2421HN/S2421NX/S2721HN/S2721NX Video input signals • Digital video signal for each differential line Per differential line at 100 ohm impedance • HDMI signal input support Input voltage/ frequency/ 100-240 VAC/50 or 60 Hz ± 3 Hz/1.5 A current (maximum) Inrush current 120 V: 30 A (maximum)

  • Page 16: Physical Characteristics

    Physical characteristics Model S2421HN/S2421NX S2721HN/S2721NX Connector type • 2 x HDMI1.4 ports • 1 x Audio line-out port Signal cable type 1.8 m HDMI1.4 cable Dimensions (with stand): Height 412.8 mm (16.25 in.) 453.3 mm (17.85 in.) Width 537.8 mm (21.17 in.) 609.9 mm (24.01 in.) Depth 152.8 mm (6.02 in.)

  • Page 17: Environmental Characteristics

    Environmental characteristics Model S2421HN/S2421NX/S2721HN/S2721NX Compliant standards • ENERGY STAR certified Monitor • TCO Certified • RoHS Compliant • BFR/PVC Reduce monitor (The circuit boards are made from BFR/PVC-free laminates). • Arsenic-Free glass and Mercury-Free for the panel only Temperature: Operating 0°C to 40°C (32°F to 104°F) Non-operating –20°C to 60°C (–4°F to 140°F)

  • Page 18: Pin Assignments

    Pin assignments 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 19: Lcd Monitor Quality And Pixel Policy

    For more information about LCD Monitor Pixel Policy, see Dell support site at: https://www.dell.com/pixelguidelines. Ergonomics CAUTION: Improper or prolonged usage of keyboard may result in injury.
  • Page 20 • Keep your forearms horizontal with your wrists in a neutral, comfortable position while using the keyboard or mouse. • Always leave space to rest your hands while using the keyboard or mouse. • Let your upper arms rest naturally on both sides. •...

  • Page 21: Handling And Moving Your Display

    Handling and moving your display To ensure that 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 22: 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 CAUTION: Read and follow the Safety instructions before cleaning the...

  • Page 23: 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 setup instructions that were included with the stand.
  • Page 24 4. Open the monitor protective cover and install the VESA screw cover. 5. Align the tabs on the stand-riser bracket with the grooves at the back of the monitor. 6. Insert the stand-riser bracket into monitor groove until it snaps into place. Setting up the monitor...
  • Page 25 CAUTION: Hold the stand riser firmly when lifting the monitor to avoid any accidental damage. 7. Hold the stand riser and lift the monitor carefully, then place it on a flat surface. 8. Lift the protective cover from the monitor. Setting up the monitor...

  • Page 26: Using The Tilt

    Using the tilt 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. With the stand attached to the monitor, you can tilt the monitor for the most comfortable viewing angle.

  • Page 27: 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 HDMI cable from your monitor to the computer. 3. Turn on your monitor. 4.

  • Page 28: Organizing Your Cables

    Organizing your cables HDMI After connecting all necessary cables to your monitor and computer, (see Connecting your monitor for cable attachment) organize all cables as shown in the image. 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 29: Removing The Monitor Stand

    Removing the monitor stand CAUTION: To prevent scratches on the LCD screen while 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 setup instructions that were included with the stand.

  • Page 30: Wall Mounting (Optional)

    Wall mounting (optional) DELL S2421HN Made in China / Fabricado en China / Fabriqué en Chine / Сделано в Китае / 製造地:中國 Consumo de energía en operación: XX.XX Wh Удельная мощность рабочего режима -X,XXX Вт/см Потребляемая мощность изделием в режиме ожидания -X,XX Вт...

  • Page 31: Operating The Monitor

    Operating the monitor Power on the monitor Press the button to turn on the monitor. Using the front panel controls Use the control buttons at the bottom edge of the monitor to adjust the specifications of the image being displayed. When using the control buttons, an On-Screen Display (OSD) menu appears on the screen with numeric values.
  • Page 32 The following table describes the front panel buttons: Front-panel button Description Use this button to choose from a list of preset color modes. Shortcut key: Preset Modes Use this button to choose from a list of input sources. Shortcut key: Input Source Use this menu button to launch the on-screen display (OSD) and select the OSD menu.

  • Page 33: 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. Dell 24/27 Monitor Brightness/Contrast Language Input Source...
  • Page 34 1. Press and hold Button 4 for four seconds, a menu appears on the screen. Dell 24/27 Monitor Select Option: 2. 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 35: Front-Panel Button

    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. Power Button unlock Use this option to unlock OSD menu and power button to turn off the monitor. Menu and Power Button unlock Use this option to run the built-in diagnostics, see...

  • Page 36: Using The On-Screen Display (Osd) Menu

    OSD menu, when you exit the OSD menu, or when the OSD menu disappears automatically. Press the button to launch the OSD menu and display the main menu. Dell 24/27 Monitor Brightness/Contrast Input Source Color Display...
  • Page 37 Icon Menu and Description submenus Brightness/ Use this menu to activate Brightness/Contrast adjustment. Contrast Dell 24/27 Monitor Brightness/Contrast Input Source Color Display Menu Personalize Others Brightness Brightness adjusts the luminance of the backlight (minimum 0; maximum 100). Press the button to increase brightness.
  • Page 38 Reset Input Resets your monitor’s Input Source settings to the factory Source defaults. Color Use the Color menu to adjust the color setting mode. Dell 24/27 Monitor Brightness/Contrast Preset Modes Standard Input Source Input Color Format Color...
  • Page 39 Menu and Description submenus Preset Modes When you select Preset Modes, you can choose Standard, ComfortView, Movie, FPS, RTS, RPG, Warm, Cool or Custom Color from the list. Dell 24/27 Monitor Standard Brightness/Contrast Preset Modes Input Source Input Color Format...
  • Page 40 • RGB: Select this option if your monitor is connected to a computer (or DVD player) using the HDMI cable. • YPbPr: Select this option if your DVD player supports only YPbPr output. Dell 24/27 Monitor Brightness/Contrast Preset Modes Input Source...
  • Page 41 NOTE: Saturation adjustment is available only for Movie and FPS, RTS, RPG mode. Reset Color Resets your monitor’s color settings to the factory defaults. Display Use the Display menu to adjust image. Dell 24/27 Monitor Brightness/Contrast Aspect Ratio Wide 16:9 Input Source Sharpness...
  • Page 42 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. Dell 24/27 Monitor Brightness/Contrast Language English Input Source Transparency...
  • Page 43 Icon Menu and Description submenus Lock Controls user access to adjustments. The buttons are locked. Dell 24/27 Monitor Brightness/Contrast Language Input Source Transparency Color Timer Menu Buttons Display Lock Menu Reset Menu Power Button Menu + Power Buttons Personalize Others Disable •...
  • Page 44 Icon Menu and Description submenus Personalize Dell 24/27 Monitor Brightness/Contrast Shortcut Key 1 Preset Modes Input Source Shortcut Key 2 Input Source Color Power Button LED On In On Mode Display Reset Personalization Menu Personalize Others Shortcut Select from Preset Modes, Brightness/Contrast, Input key 1 Source, Aspect Ratio set as shortcut key 1.
  • Page 45 Icon Menu and Description submenus Others Select this option to adjust the OSD settings such as the DDC/CI, LCD conditioning, and so on. Dell 24/27 Monitor Brightness/Contrast Display Info Input Source DDC/CI Color LCD Conditioning Firmware M3T102 Display Menu Service Tag...
  • Page 46 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 47: Osd Warning Messages

    When the monitor does not support a particular resolution mode, you can see the following message: S2421HN/S2421NX S2721HN/S2721NX Dell 24 Monitor Dell 27 Monitor The current input timing is not supported by the monitor display. Please The current input timing is not supported by the monitor display. Please...
  • Page 48 When you select OSD items of On in Standby Mode in Personalize feature, the following message appears. S2421HN/S2421NX S2721HN/S2721NX Dell 24 Monitor Dell 27 Monitor Changing to this setting (without symbol) will Increase Changing to this setting (without symbol) will Increase...
  • Page 49 If HDMI1 or HDMI2 input is selected and the corresponding cable is not connected, the following floating dialog box appears. S2421HN/S2421NX S2721HN/S2721NX Dell 24 Monitor Dell 27 Monitor No HDMI1 Cable No HDMI1 Cable The display will go into Standby Mode in 4 minutes.

  • Page 50: 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 https://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 51: Troubleshooting

    LED remains white. Also, depending upon the selected input, one of the dialogs shown below will continuously scroll through the screen. S2421HN/S2421NX S2721HN/S2721NX Dell 24 Monitor Dell 27 Monitor No HDMI1 Cable No HDMI1 Cable The display will go into Standby Mode in 4 minutes.

  • Page 52: 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 53: 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 about Dell Monitor Quality and Pixel Policy, see Dell Support site at: https://www.dell.com/support/monitors. Stuck-on pixels LCD screen has •...
  • Page 54 OSD. Safety-related Visible signs of • Do not perform any troubleshooting steps. issues smoke or sparks • Contact Dell immediately. Intermittent Monitor • Ensure that the video cable connecting the problems malfunctions on monitor to the computer is connected properly and off and is secure.

  • Page 55: Product Specific Problems

    Product specific problems Problem What you Possible solutions experience Screen image is Image is centered • Check the Aspect Ratio setting in the too small on screen, but does Display menu OSD. not fill entire viewing • Reset the monitor to factory settings. area Cannot adjust OSD does not...

  • Page 56: Appendix

    For customers in the United States, call 800-WWW-DELL (800-999-3355). NOTE: If you do not have an active Internet connection, you can find contact information on your purchase invoice, packing slip, bill, or Dell product catalog. Dell provides several online and telephone-based support and service options.

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