Dell P2421 Monitor User’s Guide Model: P2421 Regulatory model: P2421b
NOTE: A NOTE indicates important information that helps you make better use of your computer. CAUTION: A CAUTION indicates potential damage to hardware or loss of data if instructions are not followed. 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.
Contents About your monitor . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Package contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Product features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Identifying parts and controls . . . . . . . . . . . . . . . . . . . . . . 9 Front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Back view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Cleaning your monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Setting up the monitor . . . . . . . . . . . . . . . . . . . . . . 28 Attaching the stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Connecting your monitor . . . . . . . . . . . . . . . . . . . . . . . . . 31 Connecting the DisplayPort (DisplayPort to DisplayPort) cable. . 31 Connecting the HDMI cable (optional) . . . .
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Self-test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Built-in diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Common problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product specific problems . . . . . . . . . . . . . . . . . . . . . . . . Universal Serial Bus (USB) specific problems . . . . . . . . . 59 61 62 66 67 Appendix . . . . . . . . . . . . . . . . . .
About your monitor Package contents Your monitor ships with the components shown in the table below. If any component is missing, contact Dell technical support. For more information, see Contact Dell. NOTE: Some items may be optional and may not ship with your monitor. Some features may not be available in certain countries. NOTE: If you are attaching a stand that you purchased from any other source, follow the set up instructions that were included with the stand.
Power cable (varies by country) DisplayPort cable (DisplayPort to DisplayPort) VGA cable (Japan only) USB 3.
Product features The Dell P2421 monitor has an active matrix, Thin-Film Transistor (TFT), Liquid Crystal Display (LCD) and LED backlight. The monitor features include: • 61.13 cm (24.1 in.) viewable area (measured diagonally). 1920 x 1200 (16:10) resolution, plus full-screen support for lower resolutions. • Wide viewing angle to allow viewing from a sitting or standing position. • Color gamut of 99% sRGB. • Digital connectivity with DVI, DisplayPort and HDMI.
Identifying parts and controls Front view Front panel controls Label Description 1 Function buttons (For more information, see Operating the monitor) 2 Power On/Off button (with LED indicator) About your monitor │ 9
Back view Back view with monitor stand Label Description Use 1 VESA mounting holes (100 mm x 100 mm - behind attached VESA Cover) Wall mount monitor using VESAcompatible wall mount kit (100 mm x 100 mm). 2 Regulatory label Lists the regulatory approvals. 3 Stand release button Releases stand from the monitor. 4 Barcode, serial number, and Service Tag label Refer to this label if you need to contact Dell for technical support.
Side view Label Description 1 USB 3.0 downstream ports (2) Use Connect your USB device. NOTE: To use these ports, you must connect the USB cable (shipped with your monitor) to the USB-upstream port on the monitor and to your computer.
Bottom view Bottom view without monitor stand Label Description Use 1 Security lock slot Secures the monitor with security lock (security lock not included). 2 Power connector Connect the power cable (shipped with your monitor). 3 DisplayPort Connect your computer with the DisplayPort cable (shipped with your monitor). 4 HDMI port Connect your computer with the HDMI cable. 5 Stand lock feature To lock the stand to the monitor using a M3 x 6 mm screw (screw not included).
Monitor specifications Model P2421 Screen type Active matrix - TFT LCD Panel technology In-Plane Switching Technology Aspect ratio 16:10 Viewable image Diagonal 611.3 mm (24.10 in.) Width (active area) 518.4 mm (20.41 in.) Height (active area) 324.0 mm (12.76 in.) Total area 167961.6 mm2 (260.34 in.2) Pixel pitch 0.270 mm x 0.
Connectivity • 1 x DisplayPort version 1.2 • 1 x HDMI port version 1.4 • 1 x DVI port • 1 x VGA port • 1 x USB 3.0 upstream port • 2 x USB 3.0 downstream ports • 2 x USB 2.0 downstream ports Border width (edge of monitor to active area) 6.3 mm (Top) 6.3 mm (Left/Right) 19.
Preset display modes Horizontal frequency (kHz) Vertical frequency (Hz) Pixel clock (MHz) Sync polarity (Horizontal /Vertical) VESA, 720 x 400 31.5 70.1 28.3 -/+ VESA, 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 60.3 40.0 +/+ VESA, 800 x 600 46.9 75.0 49.5 +/+ VESA, 1024 x 768 48.4 60.0 65.0 -/- VESA, 1024 x 768 60.0 75.0 78.8 +/+ VESA, 1152 x 864 67.5 75.0 108.0 +/+ VESA, 1280 x 1024 64.0 60.0 108.
Electrical specifications Model P2421 Video input signals • Analog RGB, 0.7 V ± 5%, positive polarity at 75 Ω input impedance • Digital DVI-D TMDS, 600 mV for each differential line, positive polarity at 50 Ω input impedance • HDMI 1.4, 600 mV for each differential line, 100 Ω input impedance per differential pair • DisplayPort 1.2, 600 mV for each differential line, 100 Ω input impedance per differential pair AC input voltage/ frequency/current 100 VAC to 240 VAC / 50 Hz or 60 Hz ± 3 Hz / 1.
Height (compressed) 370.8 mm (14.60 in.) Width 531.0 mm (20.91 in.) Depth 166.0 mm (6.54 in.) Dimensions (without stand) Height 349.5 mm (13.76 in.) Width 531.0 mm (20.91 in.) Depth 44.1 mm (1.73 in.) Stand dimensions Height (extended) 400.8 mm (15.78 in.) Height (compressed) 353.4 mm (13.91 in.) Width 206.0 mm (8.11 in.) Depth 166.0 mm (6.54 in.) Base 206.0 mm x 166.0 mm (8.11 in. x 6.54 in.) Weight Weight with packaging 7.3 kg (16.14 lb) Weight with stand assembly and cables 5.
Environmental characteristics Model P2421 Compliant standards • ENERGY STAR certified monitor • EPEAT registered where applicable. EPEAT registration varies by country. See www.epeat.net for registration status by country.
Power management modes If you have VESA's DPM™ compliance display card or software installed on your computer, the monitor can automatically reduce its power consumption when not in use. This is referred to as Power Save Mode*. If the computer detects input from the keyboard, mouse, or other input devices, the monitor automatically resumes to function. The following table shows the power consumption and signaling of this automatic power saving feature.
NOTE: Pon: Power consumption of On mode as defined in Energy Star 8.0 version. TEC: Total energy consumption in kWh as defined in Energy Star 8.0 version.
19 Re-PWR 20 +3.3 V DP_PWR HDMI connector Pin number 19-pin side of the connected signal cable 1 TMDS DATA 2+ 2 TMDS DATA 2 SHIELD 3 TMDS DATA 2- 4 TMDS DATA 1+ 5 TMDS DATA 1 SHIELD 6 TMDS DATA 1- 7 TMDS DATA 0+ 8 TMDS DATA 0 SHIELD 9 TMDS DATA 0- 10 TMDS CLOCK+ 11 TMDS CLOCK SHIELD 12 TMDS CLOCK- 13 CEC 14 Reserved (N.C.
DVI connector Pin number 24-pin side of the connected signal cable 1 TMDS RX2- 2 TMDS RX2+ 3 TMDS Ground 4 Floating 5 Floating 6 DDC Clock 7 DDC Data 8 Floating 9 TMDS RX1- 10 TMDS RX1+ 11 TMDS Ground 12 Floating 13 Floating 14 +5 V/+3.
VGA connector Pin number 15-pin side of the connected signal cable 1 Video-Red 2 Video-Green 3 Video-Blue 4 GND 5 Self-test 6 GND-R 7 GND-G 8 GND-B 9 Computer 5 V/3.
Plug and play capability You can install the monitor in any Plug and Play-compatible system. The monitor automatically provides the computer system with its Extended Display Identification Data (EDID) using Display Data Channel (DDC) protocols so that the system can configure itself and optimize the monitor settings. Most monitor installations are automatic; you can select different settings if desired. For more information about changing the monitor settings, see Operating the monitor.
USB 3.0 upstream connector Pin number 9-pin side of the connector 1 VCC 2 D- 3 D+ 4 GND 5 SSTX- 6 SSTX+ 7 GND 8 SSRX- 9 SSRX+ USB 3.
USB 2.0 downstream connector Pin number 4-pin side of the connector 1 VCC 2 DMD 3 DPD 4 GND USB ports • 1 upstream - bottom • 2 downstream - bottom • 2 downstream - side NOTE: USB 3.0 functionality requires a USB 3.0-capable computer. NOTE: The USB ports on the monitor work only when the monitor is turned On or in power save mode. If you turn Off the monitor and then turn it On, the attached peripherals may take a few seconds to resume normal functionality.
Maintenance guidelines Cleaning your monitor CAUTION: Read and follow the Safety instructions before cleaning the monitor. WARNING: Before cleaning the monitor, unplug the monitor power cable from the electrical outlet. For best practices, follow the instructions in the list below when unpacking, cleaning, or handling your monitor: • To clean your anti-static screen, lightly dampen a soft, clean cloth with water.
Setting up the monitor Attaching the stand NOTE: The stand is not installed at the factory when shipped. NOTE: The following instructions are applicable only for attaching the stand that was shipped with your monitor. If you are attaching a stand that you purchased from any other source, follow the set up instructions that were included with the stand. To attach the monitor stand: 1. Follow the instructions on the flaps of carton to remove the stand from the top cushion that secures it. 2.
6. Lift the cover, as shown, to access the VESA area for stand assembly. 7. Attach the stand assembly to the monitor. a. Fit the two tabs on the upper part of the stand to the groove on the back of the monitor. b. Press the stand down till it snaps into place.
8. Place the monitor upright. NOTE: Lift the monitor carefully to prevent it from slipping or falling. 9. Remove the cover from the monitor.
Connecting your monitor WARNING: Before you begin any of the procedures in this section, follow the Safety instructions. NOTE: Dell monitors are designed to work optimally with Dell supplied inbox cables. Dell does not guarantee the video quality and performance when using non-Dell cables. NOTE: Route the cables through the cable-management slot before connecting them. NOTE: Do not connect all cables to the computer at the same time. NOTE: The graphics are used for the purpose of illustration only.
Connecting the HDMI cable (optional) Connecting the VGA cable (optional) Connecting the DVI cable (optional) 32 │ Setting up the monitor
Connecting the USB 3.0 cable After you have completed connecting the VGA/DisplayPort/HDMI/DVI cable, follow the procedures below to connect the USB 3.0 cable to the computer and complete your monitor setup: 1. Connect the upstream USB 3.0 port (cable supplied) to an appropriate USB 3.0 port on your computer. (See Bottom view for details.) 2. Connect the USB 3.0 peripherals to the downstream USB 3.0 ports on the monitor. 3. Plug the power cables for your computer and monitor into a nearby outlet.
Removing the monitor stand NOTE: 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 attaching the stand that was shipped with your monitor. If you are attaching a stand that you purchased from any other source, follow the set up instructions that were included with the stand. To remove the stand: 1. Place the monitor on a soft cloth or cushion. 2.
3. Use a Phillips crosshead screwdriver to remove the four screws securing the plastic cover. 4. Attach the mounting bracket from the wall mounting kit to the monitor. 5. Mount the monitor on the wall. For more information, see the documentation that shipped with the wall mounting kit. NOTE: For use only with UL or CSA or GS-listed wall mount bracket with minimum weight or load bearing capacity of 14.0 kg.
Operating the monitor Power on the monitor Press the Power button to turn On the monitor. Using the front-panel controls Use the control buttons on the front of the monitor to adjust settings. The following table describes the front-panel buttons: Front-panel button 1 Description Use this button to choose from a list of preset color modes. Shortcut key/ Preset Modes 2 Use this button to choose from a list of video signals that may be connected to your monitor.
Use the MENU button to launch the On-Screen Display (OSD). See Accessing the menu system. 3 Menu Use this button to exit the OSD main menu. 4 Exit 5 Use the Power button to turn the monitor On and Off. Power (with power light indicator) The white light indicates the monitor is On and fully functional. A glowing white light indicates the power save mode. Front-panel button Use the buttons on the front of the monitor to adjust the image settings.
Using the On-Screen Display (OSD) menu Accessing the menu system NOTE: If you change the settings and then either proceed to another menu or exit the OSD menu, the monitor automatically saves those changes. The changes are also saved if you change the settings and then wait for the OSD menu to disappear. 1. Press the button to launch the OSD menu and display the main menu. NOTE: Auto Adjust is only available when you use the analog (VGA) connector. 2.
Icon Menu and Submenus Description Brightness/ Contrast Use this menu to activate Brightness/Contrast adjustment. Brightness Brightness adjusts the luminance of the backlight. Press the button to increase the brightness and button to decrease the brightness (min. press the 0 / max. 100). Contrast Adjusts the Brightness first, and then adjust the Contrast only if further adjustment is necessary. Press the button to increase the contrast and button to decrease the contrast (min. 0 press the / max.
Auto Adjust Use this menu to activate automatic setup and adjust menu. Auto Adjust allows the monitor to self-adjust to the incoming video signal. After using Auto Adjust, you can further tune your monitor by using the Pixel Clock (Coarse) and Phase (Fine) controls under Display settings. NOTE: In most cases, Auto Adjust produces the best image for your configuration. NOTE: Auto Adjust option is only available when you are using the analog (VGA) connector.
Input Source VGA Use the Input Source menu to select between the different video signals that may be connected to your monitor. Select the VGA input when you are using the VGA connector. Press the selection. DVI-D Select the DVI-D input when you are using the DVID connector. Press the selection. DP button to confirm the button to confirm the Select the DP input when you are using the DisplayPort (DP) connector. Press the confirm the selection.
Color Preset Modes Use Color to adjust the color setting mode. Allows you to choose from a list of preset color modes. • Standard: Loads the monitor's default color settings. This is the default preset mode. • ComfortView: Decreases the level of blue light emitted from the screen to make viewing more comfortable for your eyes. WARNING: The possible long-term effects of blue light emission from the monitor may cause personal injury such as digital eye strain, eye fatigue and damage to the eyes.
Preset Modes To reduce the risk of eye strain and neck/arm/ back/shoulder pain from using the monitor for long periods of time, we suggest you to: 1. Set the distance of the screen between 20 to 28 in. (50 - 70 cm) from your eyes. 2. Blink frequently to moisten your eyes or wet your eyes with water after prolonged usage of the monitor. 3. Take regular and frequent breaks for 20 minutes every two hours. 4.
Input Color Format Allows you to set the video input mode to: • RGB: Select this option if your monitor is connected to a computer (or media player) using the VGA, DVI-D, DisplayPort, or HDMI cable. • YPbPr: Select this option if your media player supports only YPbPr output. Press the Hue button to confirm the selection. This feature can shift the color of the video image to green or purple. This is used to adjust the desired or flesh tone color. Use '0' to '100'.
Display Aspect Ratio Horizontal Position Vertical Position Use the Display menu to adjust images. Adjusts the image ratio to Wide 16:10, 4:3, or 5:4. Use or to adjust the image left or right (min. 0 / max. 100). Use or to adjust the image up or down (min. 0 / max. 100). NOTE: Horizontal Position and Vertical Position adjustments are only available for VGA input.
Sharpness This feature can make the image look sharper or softer. Use '100'. Pixel Clock to adjust the sharpness from '0' to The Phase and Pixel Clock adjustments allow you to adjust your monitor to your preference. Use Phase or or to adjust for best image quality. If satisfactory results are not obtained using the Phase adjustment, use the Pixel Clock (coarse) adjustment and then use Phase (fine), again. NOTE: Pixel Clock and Phase adjustments are only available for VGA input.
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 Sets the OSD display to one of the eight languages (English, Spanish, French, German, Brazilian Portuguese, Russian, Simplified Chinese, or Japanese). Rotation Rotates the OSD by 90 degrees counter-clockwise and anticounter-clockwise. You can adjust the menu according to your Display Rotation.
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: All Menu/function buttons (except the Power button) are locked and not accessible by the user. • Power Button: Only the Power button is locked and not accessible by the user. • Menu + Power Buttons: Both the Menu/ function & Power buttons are locked and not accessible by the user.
Personalize Shortcut Key 1 Shortcut Key 2 Allows you to choose a feature from Preset Modes, Brightness/Contrast, Auto Adjust, Input Source, Aspect Ratio, or Rotation and set it as a shortcut key. Power Button LED Allows you to set the power LED indicator on or off to save energy. USB Allows you to enable or disable USB function during monitor standby mode. NOTE: USB ON/OFF under standby mode is only available when the USB upstream cable is unplugged.
Others Display Info DDC/CI Select this option to adjust the OSD settings, such as DDC/CI, LCD Conditioning, and so on. Displays the monitor's current settings. 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. You can disable this feature by selecting Off. Enable this feature for best user experience and optimum performance of your monitor.
LCD Conditioning Helps reduce minor cases of image retention. Depending on the degree of image retention, the program may take some time to run. You can enable this feature by selecting On. Service Tag Displays the service tag of your monitor. This string is required when you look for phone support, check your warranty status, update drivers on Dell's website, etc. Reset Others Resets all settings under the Others menu to the factory preset values.
OSD warning message When the monitor does not support a particular resolution mode, you will 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. Recommended mode is 1920 x 1200. NOTE: The message may be slightly different according to the connected input signal.
When the monitor goes into power-save mode, the following message appears: Activate the computer and wake up the monitor to gain access to the OSD. NOTE: The message may be slightly different according to the connected input signal. The OSD functions only in the normal operation mode. If you press any button other than the power button during the Active-off mode, the following message will appear depending on the selected input: Activate the computer and the monitor to gain access to the OSD.
When Factory Reset is selected, the following message appears: See Troubleshooting for more information. Setting the maximum resolution To set the maximum resolution for the monitor: In Windows® 7, Windows® 8, and Windows® 8.1: 1. For Windows® 8 and Windows® 8.1 only, select the Desktop tile to switch to classic desktop. 2. Right-click on the desktop and click Screen Resolution. 3. Click the dropdown list of the Screen Resolution and select 1920 x 1200. 4. Click OK. In Windows® 10: 1.
Using the tilt, swivel, and vertical extension NOTE: The following instructions are applicable only for attaching the stand that was shipped with your monitor. If you are attaching a stand that you purchased from any other source, follow the set up instructions that were included with the stand. Tilt, swivel With the stand attached to the monitor, you can tilt and swivel the monitor for the most comfortable viewing angle. NOTE: The stand is not installed at the factory when shipped.
Rotating the monitor Before you rotate the monitor, your monitor should be fully vertically extended (Vertical extension) and fully tilted up to avoid hitting the bottom edge of the monitor.
Rotate counterclockwise NOTE: To use the Display Rotation function (Landscape versus Portrait view) with your Dell computer, you require an updated graphics driver that is not included with this monitor. To download the graphics driver, go to www.dell.com/support and see the Download section for Video Drivers for latest driver updates. NOTE: When in the Portrait View Mode, you may experience performance degradation in graphic-intensive applications (3D Gaming and etc.).
Adjusting the rotation display settings of your system After you have rotated your monitor, you need to complete the procedure below to adjust the Rotation Display Settings of your system. NOTE: If you are using the monitor with a non-Dell computer, you need to go the graphics driver website or your computer manufacturer website for information on rotating the 'contents' on your display. To adjust the Rotation Display Settings: 1. Right-click on the desktop and click Properties. 2.
Troubleshooting WARNING: Before you begin any of the procedures in this section, follow the 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. Turn Off both your computer and the monitor. 2. Unplug the video cable from the computer. 3. Turn On the monitor.
or 4. This box also appears during normal system operation, if the video cable becomes disconnected or damaged. 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 computer and video card. To run the built-in diagnostics: 1. Ensure that the screen is clean (no dust particles on the surface of the screen). 2. Press and hold Button 4 for about 4 seconds until a pop menu appears. 3. Use Button 1 or Button 2 to select the diagnostic tool and use Button 3 to confirm.
Common problems The following table contains general information about common monitor problems you might encounter and the possible solutions: Common symptoms No Video/Power LED off What you experience No picture Possible solutions • 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 other electrical equipment. • Ensure that the power button is pressed fully.
Shaky/Jittery Video Wavy picture or fine movement • Perform Auto Adjust via OSD. • Adjust the Phase and Pixel Clock controls via OSD. • Reset the monitor to factory settings. • Check environmental factors. • Relocate the monitor and test in another room. Missing Pixels LCD screen has spots • Cycle power On-Off. • 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.
Horizontal/ Vertical Lines Screen has one or more lines • Reset the monitor to factory settings. • Perform Auto Adjust via OSD. • Adjust the Phase and Pixel Clock controls via OSD. • Perform monitor self-test feature check and determine if these lines are also in self-test mode. • Check for bent or broken pins in the video cable connector. • Run the built-in diagnostics. • When using DVI-D/HDMI/DisplayPort input, the Pixel Clock and Phase adjustments are not available.
Missing Color Picture missing color • Perform monitor self-test feature check. • Ensure that the video cable connecting the monitor to the computer is connected properly and is secure. • Check for bent or broken pins in the video cable connector. Wrong Color Picture color not good • Change the settings of the Preset Modes in the Color menu OSD depending on the application. • Adjust R/G/B value under Custom Color in the Color menu OSD. • Run the built-in diagnostics.
Product specific problems Common symptoms What you experience Possible solutions Screen image is too Image is centered small on screen, but does not fill entire viewing area • Check the Aspect Ratio setting in the Display menu OSD. Cannot adjust the monitor with the buttons on the front panel • Turn Off the monitor, unplug the power cord, plug it back, and then turn On the monitor. OSD does not appear on the screen • Reset the monitor to factory settings. • The OSD menu may be locked.
Universal Serial Bus (USB) specific problems Common symptoms What you experience USB interface is not working USB peripherals are not working Possible solutions • Check that your monitor is turned On. • Reconnect the upstream cable to your computer. • Reconnect the USB peripherals (downstream connector). • Switch Off and then turn On the monitor again. • Reboot the computer. • Some USB devices like external portable HDD require higher electric current; connect the device directly to the computer system.
Appendix WARNING: 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. For information on safety instructions, see Safety, Environmental, and Regulatory Information (SERI). FCC notices (U.S. only) and other regulatory information For FCC notices and other regulatory information, see the regulatory compliance website located at www.dell.
