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About your monitor

Resolution specifications

Model

P2421

Horizontal scan range

30 kHz to 83 kHz (automatic)

Vertical scan range

56 Hz to 76 Hz (automatic)

Maximum preset resolution

1920 x 1200 at 60 Hz

Supported video modes

Model

P2421

Video display capabilities (VGA
& DVI & HDMI & DisplayPort
playback)

480p, 480i, 576p, 576i, 720p, 1080i, 1080p,

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)

19.2 mm (Bottom)

Adjustability

Height adjustable stand

Tilt

Swivel

Pivot

130 mm

-5° to 21°

-45° to 45°

-90° to 90°

Dell Display Manager
compatibility

Easy Arrange and other key features

Security

Security lock slot (cable lock sold separately)

Содержание P2421

Страница 1: ...Dell P2421 Monitor User s Guide Model P2421 Regulatory model P2421b ...

Страница 2: ...r 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 2020 05 Rev A00 ...

Страница 3: ...pported video modes 14 Preset display modes 15 Electrical specifications 16 Physical characteristics 16 Environmental characteristics 18 Power management modes 19 Pin assignments 20 Plug and play capability 24 Universal Serial Bus USB interface 24 USB 3 0 24 USB 2 0 24 USB 3 0 upstream connector 25 USB 3 0 downstream connector 25 USB 2 0 downstream connector 26 USB ports 26 LCD monitor quality and...

Страница 4: ...33 Organizing your cables 33 Removing the monitor stand 34 VESA wall mounting optional 34 Operating the monitor 36 Power on the monitor 36 Using the front panel controls 36 Front panel button 37 Using the On Screen Display OSD menu 38 Accessing the menu system 38 OSD warning message 52 Setting the maximum resolution 54 Using the tilt swivel and vertical extension 55 Tilt swivel 55 Vertical extensi...

Страница 5: ... 59 Self test 59 Built in diagnostics 61 Common problems 62 Product specific problems 66 Universal Serial Bus USB specific problems 67 Appendix 68 FCC notices U S only and other regulatory information 68 Contact Dell 68 ...

Страница 6: ...t 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 Display Stand riser Stand base ...

Страница 7: ... Power cable varies by country DisplayPort cable DisplayPort to DisplayPort VGA cable Japan only USB 3 0 upstream cable enables the USB ports on the monitor Quick Setup Guide Safety Environmental and Regulatory Information ...

Страница 8: ... stand and Video Electronics Standards Association VESA 100 mm mounting holes for flexible mounting solutions Equipped with 1 USB upstream port and 4 USB downstream ports Plug and play capability if supported by your system On Screen Display OSD adjustments for ease of set up and screen optimization Power and OSD buttons lock Security lock slot Stand lock 0 3 W standby power when in sleep mode Opt...

Страница 9: ...ut your monitor 9 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 ...

Страница 10: ...onitor using VESA compatible 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 5 Cable management slot Use to organize cables by inserting them through the slot ...

Страница 11: ...ide view Label Description Use 1 USB 3 0 downstream ports 2 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 ...

Страница 12: ...ble 5 Stand lock feature To lock the stand to the monitor using a M3 x 6 mm screw screw not included 6 DVI port Connect your computer with the DVI cable 7 VGA connector Connect your computer with the VGA cable shipped with your monitor for Japan only 8 USB 3 0 upstream port Connect the USB cable shipped with your monitor to this port and your computer to enable the USB ports on your monitor 9 USB ...

Страница 13: ... 260 34 in 2 Pixel pitch 0 270 mm x 0 270 mm Pixel per inch PPI 94 Viewing angle 178 vertical typical 178 horizontal typical Luminance output 300 cd m typical Contrast ratio 1000 to 1 typical Faceplate coating AG type 3H hard coating Haze 25 Backlight White LED edgelight system Response time 8 ms Normal 5 ms Fast Color depth 16 7 million colors Color gamut 99 sRGB Built in devices USB 3 0 Super Sp...

Страница 14: ... 576p 576i 720p 1080i 1080p 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 2 mm Bottom Adjustability Height adjustable stand Tilt Swivel Pivot 130 mm 5 to 21 45 to 45 90 to 90 Dell Display Manag...

Страница 15: ... 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 0 VESA 1280 x 1024 80 0 75 0 135 0 VESA 1600 x 1200 75 0 60 0 162 0 VESA 1920 x 1080 67 5 60 0 148 5 VESA 1920 x 1200 74 0 60 0 154 0 ...

Страница 16: ... 30 A Max at 0 C cold start 240 V 60 A Max at 0 C cold start Physical characteristics Model P2421 Signal cable type Digital DisplayPort 20 pins Digital HDMI 19 pins cable not included Digital DVI D 24 pins cable not included Analog D Sub 15 pins cable not included except for Japan Universal Serial Bus USB 9 pins NOTE Dell monitors are designed to work optimally with the video cables that are shipp...

Страница 17: ...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 6 kg 12 26 lb Weight without stand assembly For wall mount or VESA mount considerations no cables 3 5 kg 7 63 lb Weight of stand assembly 1 6 kg 3 53 lb Front fram...

Страница 18: ... monitor excluding external cables Arsenic free glass and Mercury free for the panel only Temperature Operating 0 C to 40 C 32 F to 104 F Non operating Storage 20 C to 60 C 4 F to 140 F Shipping 20 C to 60 C 4 F to 140 F Humidity Operating 20 to 80 non condensing Non operating Storage 10 to 90 non condensing Shipping 10 to 90 non condensing Altitude Operating 5000 m 16404 ft maximum Non operating ...

Страница 19: ... 2 W Total Energy Consumption TEC 39 1 kWh Zero power consumption in OFF mode can only be achieved by disconnecting the main cable from the monitor Maximum power consumption with max luminance and USB active This document is informational only and reflects laboratory performance Your product may perform differently depending on the software components and peripherals you ordered and shall have no ...

Страница 20: ...in kWh as defined in Energy Star 8 0 version 20 About your monitor Pin assignments DisplayPort connector Pin number 20 pin side of the connected signal cable 1 ML3 n 2 GND 3 ML3 p 4 ML2 n 5 GND 6 ML2 p 7 ML1 n 8 GND 9 ML1 p 10 ML0 n 11 GND 12 ML0 p 13 GND 14 GND 15 AUX p 16 GND 17 AUX n 18 Hot Plug Detect ...

Страница 21: ...le 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 on device 15 DDC CLOCK SCL 16 DDC DATA SDA 17 DDC CEC Ground 18 5 V POWER 19 HOT PLUG DETECT ...

Страница 22: ... 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 3 V power 15 Self test 16 Hot Plug Detect 17 TMDS RX0 18 TMDS RX0 19 TMDS Ground 20 Floating 21 Floating 22 TMDS Ground 23 TMDS Clock 24 TMDS Clock ...

Страница 23: ...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 3 V 10 GND sync 11 GND 12 DDC data 13 H sync 14 V sync 15 DDC clock ...

Страница 24: ...d For more information about changing the monitor settings see Operating the monitor Universal Serial Bus USB interface This section gives you information about the USB ports that are available on the monitor Transfer speed Data rate Power consumption Super Speed 5 Gbps 4 5 W Max each port High speed 480 Mbps 4 5 W Max each port Full speed 12 Mbps 4 5 W Max each port NOTE This monitor is Super Spe...

Страница 25: ...pstream 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 0 downstream connector Pin number 9 pin side of the connector 1 VCC 2 D 3 D 4 GND 5 SSRX 6 SSRX 7 GND 8 SSTX 9 SSTX ...

Страница 26: ...nitor 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 LCD monitor quality and pixel policy 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 usabil...

Страница 27: ...cial screen cleaning tissue or solution suitable for the anti static coating Do not use benzene thinner ammonia abrasive cleaners or compressed air Use a lightly dampened warm cloth to clean the monitor Avoid using detergent of any kind as some detergents leave a milky film on the monitor If you notice white powder when you unpack your monitor wipe it off with a cloth Handle your monitor with care...

Страница 28: ...hased 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 Remove the stand riser and stand base from the packaging cushion 3 Insert the stand base blocks fully into the stand slot 4 Lift the screw handle and turn the screw clockw...

Страница 29: ...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 ...

Страница 30: ...30 Setting up the monitor 8 Place the monitor upright NOTE Lift the monitor carefully to prevent it from slipping or falling 9 Remove the cover from the monitor ...

Страница 31: ...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 Appearance of the computer may vary To connect your monitor to the computer 1 Turn Off your computer and disconnect the power cable 2 Connect the DisplayPort HDMI VGA or DVI cab...

Страница 32: ...32 Setting up the monitor Connecting the HDMI cable optional Connecting the VGA cable optional Connecting the DVI cable optional ...

Страница 33: ...ct 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 NOTE Use the cable slot on the monitor stand to organize the cables 4 Turn On the monitor and the computer If your monitor displays an image installation is complete If it does not display an image see Universal Serial Bus USB specific problems Organi...

Страница 34: ...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 Press and hold the stand release button 3 Lift the stand up and away from the monitor VESA wall mounting optional Screw dimension M4 x 10 mm Refer to the instructions that come with the VESA compatible wall mounting kit 1 Pla...

Страница 35: ...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 ...

Страница 36: ...ontrol buttons on the front of the monitor to adjust settings The following table describes the front panel buttons Front panel button Description 1 Shortcut key Preset Modes Use this button to choose from a list of preset color modes 2 Shortcut key Input Source Use this button to choose from a list of video signals that may be connected to your monitor ...

Страница 37: ...tems in the OSD menu 3 OK Use the OK button to confirm your selection 4 Back Use the Back button to go back to the previous menu 3 Menu Use the MENU button to launch the On Screen Display OSD See Accessing the menu system 4 Exit Use this button to exit the OSD main menu 5 Power with power light indicator Use the Power button to turn the monitor On and Off The white light indicates the monitor is O...

Страница 38: ...or 2 Press the and buttons to move between the setting options As you move from one icon to another the option name is highlighted See the following table for a complete list of all the options available for the monitor 3 Press the or or button once to activate the highlighted option NOTE The directional buttons and the OK button displayed may differ according to the menu you ve selected Use avail...

Страница 39: ...utton to increase the brightness and press the button to decrease the brightness min 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 press the button to decrease the contrast min 0 max 100 The Contrast function adjusts the degree of difference between darkness and lightness on the mon...

Страница 40: ...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 ...

Страница 41: ...VI D input when you are using the DVI D connector Press the button to confirm the selection DP Select the DP input when you are using the DisplayPort DP connector Press the button to confirm the selection HDMI Select the HDMI input when you are using the HDMI connector Press the button to confirm the selection Auto Select Turning on the function allows you to scan for available input sources Reset...

Страница 42: ...lt 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 Using monitor for extended periods of time may also cause pain in parts of body such as neck arm back...

Страница 43: ...nitor and gaze at a distant object at 20 feet away for at least 20 seconds during the breaks 5 Perform stretches to relieve tension in the neck arm back and shoulders during the breaks Movie Loads color settings ideal for movies Game Loads color settings ideal for most gaming applications Warm Presents colors at lower color temperatures The screen appears warmer with a red yellow tint Cool Present...

Страница 44: ...n Hue This feature can shift the color of the video image to green or purple This is used to adjust the desired flesh tone color Use or to adjust the hue from 0 to 100 NOTE Hue adjustment is available only when you select Movie or Game preset mode Saturation This feature can adjust the color saturation of the video image Use or to adjust the saturation from 0 to 100 NOTE Saturation adjustment is a...

Страница 45: ...Adjusts the image ratio to Wide 16 10 4 3 or 5 4 Horizontal Position Use or to adjust the image left or right min 0 max 100 Vertical Position 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 ...

Страница 46: ...tor to your preference Use or to adjust for best image quality Phase 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 Response Time Allows you to set the Response Time to Normal or Fast Reset Display Resets all display settings to the factor...

Страница 47: ...an 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 Transparency Select this option to change the menu transparency by pressing the and buttons min 0 max 100 Timer Sets the length of time the OSD will remain active after the last time you pressed a button U...

Страница 48: ...nly 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 The default setting is Disable Alternative Lock Method for Menu function buttons You can also press and hold the Menu function button next to the Power button for 4 seconds to set the lock options NOTE To unlock the button s press and hold ...

Страница 49: ...wer 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 This option will be grayed out when the USB upstream cable plugs in Reset Personalization Resets all settings under the Personalize menu to the fac...

Страница 50: ...splays 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 You can disable this feature by selecting Off Enable this feature for best user experience and optimum performance of your monitor ...

Страница 51: ... 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 Factory Reset Restore all preset values to the factory default settings These are also the settings for ENERGY STAR tests ...

Страница 52: ...r 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 You will see the following message before the DDC CI function is disabled You will see the following message before the Lock function is activated NOTE The message may be slightly...

Страница 53: ...ress 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 NOTE The message may be slightly different according to the connected input signal If either VGA DVI D DisplayPort or HDMI input is selected and the corresponding cable is not connected a floating di...

Страница 54: ...1 Right click on the desktop and click Display settings 2 Click Advanced display settings 3 Click the dropdown list of Resolution and select 1920 x 1200 4 Click Apply If you do not see 1920 x 1200 as an option you may need to update your graphics driver 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 suppo...

Страница 55: ...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 Vertical extension NOTE The stand extends vertically up to 130 mm The figure below illustrates how to extend the ...

Страница 56: ...the monitor 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 clockwise ...

Страница 57: ...ter 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 ...

Страница 58: ...y Settings 1 Right click on the desktop and click Properties 2 Select the Settings tab and click Advanced 3 If you have an ATI graphics card select the Rotation tab and set the preferred rotation 4 If you have an NVIDIA graphics card click the NVIDIA tab in the left hand column select NVRotate and then select the preferred rotation 5 If you have an Intel graphics card select the Intel graphics tab...

Страница 59: ...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 The floating dialog box should appear on screen against a black background if the monitor cannot sense a video signal and is working correctly While in self test mode the power LED remains white Also d...

Страница 60: ...e 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 ...

Страница 61: ...t 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 A gray test pattern appears at the beginning of the diagnostic program 4 Carefully inspect the screen for abnormalities 5 Press Button 1 again to change the test patterns 6 Repeat steps 4 and 5 to inspec...

Страница 62: ...he power button is pressed fully Ensure that the correct input source is selected in the Input Source menu No Video Power LED on No picture or no brightness Increase brightness contrast controls via OSD Perform monitor self test feature check Check for bent or broken pins in the video cable connector Run the built in diagnostics Ensure that the correct input source is selected in the Input Source ...

Страница 63: ...l com support monitors Stuck on Pixels LCD screen has bright 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 com support monitors Brightness Problems Picture too dim or too bright Reset the monitor to factory settings Perform Auto Adjust via OS...

Страница 64: ...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 to determine if the scrambled screen appears in self test mode Check for bent or broken pins in the video cable connector Restart the computer in the safe mode Safety Related Issues Visible signs of smoke or sparks Do not perform any troublesho...

Страница 65: ... 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 Image retention from a static image left on the monitor for a long period of time Faint shadow from the static image displayed appears on the screen Use the Power Management feature to...

Страница 66: ...SD menu may be locked Press and hold the Menu function button next to the Power button for 4 seconds to unlock No Input Signal when user controls are pressed No picture the LED light is white Check the signal source Ensure the computer is not in the power saving mode by moving the mouse or pressing any key on the keyboard Check whether the signal cable is plugged in properly Re plug the signal cab...

Страница 67: ...erals working slowly or not working at all Check that your computer is USB 3 0 capable Some computers have USB 3 0 USB 2 0 and USB 1 1 ports Ensure that the correct USB port is used Reconnect the upstream cable to your computer Reconnect the USB peripherals downstream connector Reboot the computer Wireless USB peripherals stop working when a USB 3 0 device is plugged in Wireless USB peripherals re...

Страница 68: ...latory information see the regulatory compliance website located at www dell com regulatory_compliance Contact Dell 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 ser...

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