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Operating the monitor

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57

The OSD functions only in the normal operation mode. If you press the joystick
during the Standby mode, the following message will appear depending on the
selected input:

Activate the computer and the monitor to gain access to the

.

NOTE: The message may be slightly different according to the
connected input signal.

If either USB Type-C, DisplayPort, or HDMI input is selected and the corresponding
cable is not connected, the following message will appear:

NOTE: The message may be slightly different according to the
connected input signal.

When the monitor is under DP/HDMI input and a USB Type-C cable is connected to
a notebook that supports DP Alternate Mode, if

Auto Select for USB-C

is enabled,

the following message appears:

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Summary of Contents for P3421W

Page 1: ...Dell P3421W Monitor User s Guide Model P3421W Regulatory model P3421Wb ...

Page 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 10 Rev A00 ...

Page 3: ...trical specifications 15 Physical characteristics 16 Environmental characteristics 18 Pin assignments 19 Plug and play capability 21 Universal Serial Bus USB interface 21 SuperSpeed USB 5 Gbps USB 3 2 Gen1 21 USB 2 0 21 USB Type C 21 USB 3 2 Gen1 5 Gbps upstream connector 22 USB 3 2 Gen1 5 Gbps downstream connector 22 USB 2 0 downstream connector 23 USB Type C connector 23 USB ports 24 LCD monitor...

Page 4: ...oving the monitor stand 33 VESA wall mounting optional 34 Operating the monitor 35 Power on the monitor 35 Using the joystick control 35 Using the On Screen Display OSD menu 36 Accessing the Menu Launcher 36 Using the navigation keys 37 Accessing the menu system 38 OSD warning message 55 Setting the maximum resolution 59 Setting the KVM switch 60 Setting the Auto KVM 62 Using the tilt swivel and v...

Page 5: ...blems 69 Product specific problems 72 Universal Serial Bus USB specific problems 73 Appendix 75 FCC notices U S only and other regulatory information 75 Contact Dell 75 EU product database for energy label and product information sheet 75 ...

Page 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 ...

Page 7: ...untry DisplayPort cable DisplayPort to DisplayPort HDMI cable USB Type C cable USB 3 2 Gen1 5 Gbps USB 3 2 Gen1 5 Gbps upstream cable enables the USB ports on the monitor Cable tie Quick Setup Guide Safety Environmental and Regulatory Information ...

Page 8: ...ronics Standards Association VESA 100 mm mounting holes for flexible mounting solutions Equipped with 1 USB Type C upstream port 1 USB Type B upstream port and 4 USB Type A downstream ports Plug and play capability if supported by your system The built in KVM switch allows you to control up to 2 computers from a single set of keyboard and mouse connected to the monitor Supports Auto KVM for multip...

Page 9: ...tifying parts and controls Front view Label Description 1 Power LED indicator Solid white light indicates that the monitor is turned on and functioning normally Blinking white light indicates that the monitor is in Standby Mode ...

Page 10: ...ory 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 Power On Off button To turn the monitor on or off 6 Joystick Use to control the OSD menu For more Information see Operating the monitor 7 Cable management slot Use to organize cables by ...

Page 11: ... cable shipped with your monitor 5 Stand lock feature To lock the stand to the monitor using a M3 x 6 mm screw screw not included 6 USB Type C port Connect the USB Type C cable that came with your monitor to the computer or mobile device This port supports USB Power Delivery Data and DisplayPort video signal The USB 3 2 Gen1 5 Gbps Type C port offers the fastest transfer rate and the alternate mod...

Page 12: ...0 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 9 SuperSpeed USB 5 Gbps USB 3 2 Gen1 downstream port 2 Connect your USB 3 2 Gen1 5 Gbps device 2 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 Model P342...

Page 13: ...r gamut sRGB 99 Connectivity 1 x DisplayPort version 1 2 HDCP 2 3 1 x HDMI port version 2 0 HDCP 2 3 1 x USB Type C upstream port Alternate mode with DisplayPort 1 2 Power Delivery PD up to 65 W 1 x SuperSpeed USB 5 Gbps USB 3 2 Gen1 upstream port 2 x SuperSpeed USB 5 Gbps USB 3 2 Gen1 downstream port 2 x USB 2 0 downstream port Border width edge of monitor to active area 8 7 mm Top 8 7 mm Left Ri...

Page 14: ...DMI DisplayPort USB Type C alternate mode 480p 480i 576p 576i 720p 1080i 1080p Preset display modes Dell Display Manager compatibility Easy Arrange and other key features Security Security lock slot cable lock sold separately Display mode Horizontal frequency kHz Vertical frequency Hz Pixel clock MHz Sync polarity Horizontal Vertical VESA 640 x 480 31 5 59 9 25 2 VESA 640 x 480 37 5 75 0 31 5 VESA...

Page 15: ... Standby Mode 1 31 5 W On mode 1 126 W Max 2 25 29 W Pon 3 80 31 kWh TEC 3 HBR2 is supported 1 As defined in EU 2019 2021 and EU 2019 2013 2 Max brightness and contrast setting with maximum power loading on all USB ports 3 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 VESA 1152 x 864 67 5 75 0 108 0 ...

Page 16: ...y default settings or enabling other features may increase power consumption that could exceed the ENERGY STAR specified limit Model P3421W Signal cable type Digital DisplayPort 20 pins Digital HDMI 19 pins Universal Series Bus Type C 24 pins Universal Serial Bus USB 9 pins NOTE Dell monitors are designed to work optimally with the video cables that are shipped with your monitor As Dell does not h...

Page 17: ...n Depth 237 4 mm 9 35 in Base 307 0 mm x 235 0 mm 12 09 in x 9 25 in Weight Weight with packaging 14 9 kg 32 80 lb Weight with stand assembly and cables 10 8 kg 23 89 lb Weight without stand assembly For wall mount or VESA mount considerations no cables 6 7 kg 14 85 lb Weight of stand assembly 3 6 kg 7 92 lb Front frame gloss 17 3 ...

Page 18: ...e 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...

Page 19: ...ayPort 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 19 Re PWR 20 3 3 V DP_PWR ...

Page 20: ...A 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 ...

Page 21: ...us USB interface This section gives you information about the USB ports that are available on the monitor Transfer speed Data rate Maximum power supported Super Speed 5 Gbps 5 V 0 9 A Max each port High speed 480 Mbps 5 V 0 9 A Max each port Full speed 12 Mbps 5 V 0 9 A Max each port SuperSpeed USB 5 Gbps USB 3 2 Gen1 USB 2 0 Transfer speed Data rate Maximum power supported High speed 480 Mbps 5 V...

Page 22: ...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 2 Gen1 5 Gbps 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 ...

Page 23: ... the connector 1 VCC 2 DMD 3 DPD 4 GND USB Type C connector Pin Number Signal Name Pin Number Signal Name A1 GND B1 GND A2 TX1 B2 TX2 A3 TX1 B3 TX2 A4 VBUS B4 VBUS A5 CC1 B5 CC2 A6 D B6 D A7 D B7 D A8 SBU1 B8 SBU2 A9 VBUS B9 VBUS A10 RX2 B10 RX1 A11 RX2 B11 RX1 A12 GND B12 GND ...

Page 24: ...nd 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 If possible use a special screen cleaning tissue or solu...

Page 25: ...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...

Page 26: ...cover as shown to access the VESA area for stand assembly 7 Attach the stand assembly to the display a Fit the two tabs on the upper part of the stand to the groove on the back of the display b Press the stand down till it snaps into place ...

Page 27: ...Setting up the monitor 27 8 Place the monitor upright NOTE Lift the monitor carefully to prevent it from slipping or falling 9 Remove the cover from the monitor ...

Page 28: ...te 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 Route the power cable through the cable management slot on the stan...

Page 29: ...ick to launch the Menu Launcher Move the joystick up to select and activate the OSD main menu Toggle the joystick to highlight Input Source then press the joystick button to enter the submenu Toggle the joystick to highlight DP Press and hold the joystick for approximately 10 seconds and the DisplayPort configuration message appears Toggle the joystick to select Yes and then press the joystick to ...

Page 30: ...ck to launch the Menu Launcher Move the joystick up to select and activate the OSD main menu Toggle the joystick to highlight Input Source then press the joystick to enter the submenu Toggle the joystick to highlight HDMI Press and hold the joystick for approximately 10 seconds and the HDMI configuration message appears Toggle the joystick to select Yes and then press the joystick to save the chan...

Page 31: ...USB storage devices are in use by the computer connected to the monitor s USB downstream port After you have completed connecting the DisplayPort HDMI USB Type C cable follow the procedures below to connect the USB 3 2 Gen1 cable to the computer and complete your monitor setup 1 a Connect one computer connect the USB 3 2 Gen1 upstream port cable supplied to an appropriate USB 3 2 Gen1 port on your...

Page 32: ...g two computers to the monitor configure the USB settings from the OSD menu to share a single set of keyboard and mouse connected to the monitor between two computers See USB and Setting the KVM switch for details 4 Turn On the monitor and the computer s If your monitor displays an image installation is complete If it does not display an image see Common problems ...

Page 33: ... removing the stand ensure that the monitor is placed on a soft clean surface NOTE The following instructions are applicable only for removing the stand that was shipped with your monitor If you are removing 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 Press and...

Page 34: ...ve the stand See Removing the monitor stand 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...

Page 35: ...isplay OSD adjustments 1 Press the joystick to launch the Menu Launcher 2 Move the joystick up down left right to toggle between options 3 Press the joystick again to confirm the selection Joystick Description When there is no OSD on the screen press the joystick to launch the Menu Launcher See Accessing the Menu Launcher When the OSD is displayed press the joystick to confirm the selection or sav...

Page 36: ...move the joystick The following table describes the Menu Launcher functions For 2 way right and left directional navigation Move right to enter the submenu Move left to exit from the submenu For 2 way up and down directional navigation Toggles between the menu items Increases up or decreases down the parameters of selected menu item Label Icon Description 1 Menu To launch the On Screen Display OSD...

Page 37: ... functions When you move the joystick to the left or right to toggle between the shortcut functions the selected item will be highlighted and shifted to the center position Press the joystick to enter its submenu Input Source To choose an input source from the list of video signals that may be connected to your monitor Preset Modes To choose a preferred color mode from the list of preset modes Bri...

Page 38: ...htness adjusts the luminance of the backlight Move the joystick up to increase the brightness level or move the joystick down to decrease the brightness level min 0 max 100 Contrast Adjusts the Brightness first and then adjust the Contrast only if further adjustment is necessary Move the joystick up to increase the contrast level or move the joystick down to decrease the contrast level min 0 max 1...

Page 39: ... when you are using the USB Type C connector Press the joystick to confirm the selection DP Select DP when you are using the DisplayPort DP connector Press the joystick to confirm the selection HDMI Select HDMI when you are using the HDMI connector Press the joystick to confirm the selection Auto Select Turning on the function allows you to scan for available input sources ...

Page 40: ...stick to confirm the selection NOTE The option is available only when Auto Select is on Rename Inputs Allows you to specify a preset input name for the selected input source The preset options are PC PC 1 PC 2 Laptop Laptop 1 and Laptop 2 The default setting is Off NOTE When you perform a rename for the USB C input the wattage value remains after the specified option e g PC 1 65W NOTE It is only a...

Page 41: ... you to choose from the list of preset color modes Press the joystick to confirm the selection 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 ...

Page 42: ... eyes with water after prolonged usage of the monitor 3 Take regular and frequent breaks for 20 minutes every two hours 4 Look away from your monitor 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 i...

Page 43: ...ure can shift the color of the video image to green or purple This is used to adjust the desired flesh tone color Move the joystick to adjust the hue level 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 Move the joystick to adjust the saturation level from 0 to 100 NOTE Saturat...

Page 44: ...age ratio to Wide 21 9 4 3 or 5 4 Sharpness This feature can make the image look sharper or softer Move the joystick to adjust the sharpness level from 0 to 100 Response Time Allows you to set the Response Time to Normal or Fast Reset Display Resets all display settings to the factory preset values ...

Page 45: ...s up a window displaying image from another input source Press the joystick to confirm the selection X X X X Sub Window Main Window USB Type C DP HDMI HDMI DP USB Type C NOTE The images under PBP mode will be displayed at the center of the split windows ...

Page 46: ...ndow The options are shown in graphic format giving a quick understanding of various layout settings The default setting is Off PIP PBP Sub Select between the different video signals that may be connected to your monitor for the PIP PBP sub window Press the joystick to confirm the selection NOTE The option is available only when the PIP PBP mode is enabled ...

Page 47: ...t to swap videos between main window and sub window in PIP PBP mode Press the joystick to confirm the selection NOTE The option is available only when the PIP PBP mode is enabled Contrast Sub Select to adjust the contrast level of the picture in PIP PBP mode Move the joystick to adjust the contrast level from 0 to 100 NOTE The option is available only when the PIP PBP mode is enabled ...

Page 48: ...gnals when you connect a computer to the upstream port See also Setting the KVM switch for details Press the joystick to confirm the selection When you use only one upstream port the connected upstream port is active NOTE To prevent data damage or loss before unplugging the USB upstream port make sure that NO USB storage devices are in use by the computer connected to the monitor s USB downstream ...

Page 49: ... to one of the eight languages English Spanish French German Brazilian Portuguese Russian Simplified Chinese or Japanese Transparency Select this option to change the menu transparency by moving the joystick min 0 max 100 Timer Sets the length of time the OSD will remain active after the last time you pressed a button Move the joystick to adjust the slider in 1 second increments from 5 to 60 secon...

Page 50: ...ble by the user Menu Power Buttons Both the joystick Power button are locked and not accessible by the user The default setting is Disable Alternative Lock Method You can move and hold the joystick up down left right for 4 seconds to set the lock options via the pop up menu and then press the joystick to confirm the configuration NOTE To unlock move and hold the joystick up down left right for 4 s...

Page 51: ...ging 65W The default setting is Off in Off Mode Selecting On in Off Mode may automatically charge your notebook or mobile devices through the USB Type C cable when the monitor is in off mode Other USB Charging Allows you to enable or disable USB Type A and USB Type C Downstream Ports charging function during monitor standby mode NOTE This option is only available when the USB Type C Upstream Port ...

Page 52: ...e Pressing the joystick may also wake up the monitor after it goes into Standby mode Reset Personalization Resets all settings under the Personalize menu to the factory preset values Others Select this option to adjust the OSD settings such as DDC CI LCD Conditioning and so on Display Info Displays the monitor s current settings ...

Page 53: ...isable 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 Firmware Displays the firmware version of your monitor ...

Page 54: ... 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 ...

Page 55: ...ng from the computer See Monitor specifications for the Horizontal and Vertical frequency ranges addressable by this monitor Recommended mode is 3440 x 1440 You will see the following message before the DDC CI function is disabled When you adjust the Brightness level for the first time the following message appears NOTE If you select Yes the message will not appear next time when you intend to cha...

Page 56: ... above the message will not appear next time when you intend to change the settings of these features When you perform a factory reset the message will appear again When the monitor goes into Standby mode the following message appears Activate the computer and wake up the monitor to gain access to the OSD You will see the following message before the Lock function is activated NOTE The message may...

Page 57: ... may be slightly different according to the connected input signal If either USB Type C DisplayPort or HDMI input is selected and the corresponding cable is not connected the following message will appear NOTE The message may be slightly different according to the connected input signal When the monitor is under DP HDMI input and a USB Type C cable is connected to a notebook that supports DP Alter...

Page 58: ...58 Operating the monitor When Factory Reset is selected the following message appears When Yes is selected the following message appears See Troubleshooting for more information ...

Page 59: ...tings 2 Click Advanced display settings 3 Click the dropdown list of Resolution and select 3440 x 1440 4 Click Apply If you do not see 3440 x 1440 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 http www dell com support enter your service tag and download the latest d...

Page 60: ...p to 2 computers from a single set of keyboard and mouse connected to the monitor a When connecting HDMI USB B to computer 1 and DP USB C to computer 2 NOTE The USB Type C connection currently supports only data transfer Make sure USB for HDMI is assigned to USB B and DP is assigned to USB C 65W ...

Page 61: ...tly supports video and data transfer Make sure USB for HDMI is assigned to USB B NOTE As the USB Type C port supports the DisplayPort Alternate Mode there is no need to set USB for USB C NOTE When connecting to different video input sources not shown above follow the same method to make correct settings for USB to pair the ports ...

Page 62: ...rating the monitor Setting the Auto KVM You can follow below instruction to set up Auto KVM for your monitor 1 Ensure that PIP PBP Mode is Off 2 Ensure that Auto Select is On and Auto Select for USB C is Yes ...

Page 63: ...Operating the monitor 63 3 Ensure that the USB ports and the video inputs are paired accordingly NOTE For USB Type C connection there is no further setting required ...

Page 64: ...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 150 mm The figure below illustrates how to extend the ...

Page 65: ...Operating the monitor 65 Slant adjust With the stand attached to the monitor you can adjust the monitor to your desired angle with the slant adjust feature ...

Page 66: ...ideo cable from the computer 3 Turn on the monitor If the monitor cannot sense a video signal and is working correctly the following message will appear NOTE The message may be slightly different according to the connected input signal NOTE While in self test mode the power LED remains white 4 This box also appears during normal system operation if the video cable becomes disconnected or damaged 5...

Page 67: ...en 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 Move and hold the joystick up down left right for about 4 seconds until a pop up menu appears ...

Page 68: ...e joystick to confirm A gray test pattern appears 4 Carefully inspect the screen for abnormalities 5 Press the joystick to change the test patterns 6 Repeat steps 4 and 5 to inspect the display in red green blue black white and text screens 7 Press the joystick to end the diagnostic program ...

Page 69: ...at 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 menu Poor Focus Picture is fuzzy blurry or...

Page 70: ...ogy For more information on Dell Monitor Quality and Pixel Policy see Dell Support site at www dell com pixelguidelines Brightness Problems Picture too dim or too bright Reset the monitor to factory settings Adjust brightness contrast controls via OSD Geometric Distortion Screen not centered correctly Reset the monitor to factory settings Horizontal Vertical Lines Screen has one or more lines Rese...

Page 71: ...he monitor to the computer is connected properly and is secure Reset the monitor to factory settings Perform monitor self test feature check to determine if the intermittent problem occurs in self test mode 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...

Page 72: ...onitor with the joystick OSD does not appear on the screen Turn Off the monitor unplug the power cord plug it back and then turn On the monitor Check whether the OSD menu is locked If yes move and hold the joystick up down left right for 4 seconds to unlock for more information see Lock No Input Signal when user controls are pressed No picture the LED light is white Check the signal source Ensure ...

Page 73: ...is not working USB peripherals are not working 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 USB Type C port does not s...

Page 74: ... your computer Reconnect the USB peripherals downstream connector Reboot the computer Wireless USB peripherals stop working when a USB 3 2 device is plugged in Wireless USB peripherals responding slowly or only working as the distance between itself and its receiver decreases Increase the distance between the USB 3 2 peripherals and the wireless USB receiver Position your wireless USB receiver as ...

Page 75: ...te located at www dell com regulatory_compliance Contact Dell For customers in the United States call 800 WWW DELL 800 999 3355 EU product database for energy label and product information sheet P3421W https eprel ec europa eu qr 347530 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 prov...

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