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Operating the monitor

Setting the maximum resolution

NOTE: The steps may vary slightly depending on the version of
Windows you have.

To set the maximum resolution for the monitor:

In Windows 7, Windows 8, and Windows 8.1:

For Windows 8 and Windows 8.1 only, select the Desktop tile to switch to
classic desktop.

Right-click on the desktop and click

Screen Resolution

If you have more than one monitor connected, ensure that you select

U3423WE

Click the

Screen Resolution

dropdown list and select

3440 x 1440

Click

In Windows 10 and Windows 11:

Right-click on the desktop and click

Display settings

If you have more than one monitor connected, ensure to select

U3423WE

Click the

Display Resolution

dropdown list and select

3440 x 1440

Click

Keep changes

If you do not see 3440 x 1440 as an option, you must update your graphics driver to
the latest version. Depending on your computer, complete one of the following
procedures:

If you have a Dell desktop or laptop:

• 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):

• Go to the support site for your computer and download the latest graphic

drivers.

• Go to your graphics card website and download the latest graphic drivers.

Содержание U3423WE

Страница 1: ...DellUltraSharp34CurvedUSB CHub Monitor U3423WE User s Guide Model U3423WE Regulatory model U3423WEb ...

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 2022 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 2022 09 Rev A00 ...

Страница 3: ...Supported video modes 17 Preset display modes 18 Electrical specifications 18 Physical characteristics 20 Environmental characteristics 21 Pin assignments 22 Universal Serial Bus USB interface 24 USB 3 2 downstream connector 24 USB Type C connector 25 USB ports 25 RJ45 Connector 26 Plug and play capability 29 LCD monitor quality and pixel policy 29 Ergonomics 29 Handling and moving your display 31...

Страница 4: ...ing the super speed USB 10 Gbps USB 3 2 Gen2 cable 39 Dell Power Button Sync DPBS 41 Connecting the Monitor for DPBS for the First Time 44 Using DPBS Function 45 Connecting the monitor for USB C 47 Securing your monitor using Kensington lock optional 49 Removing the monitor stand 49 VESA wall mounting optional 50 Operating the monitor 51 Power on the monitor 51 Using the Joystick Control 51 Using ...

Страница 5: ...lf test 83 Using the joystick to lock unlock buttons 84 Locking the power and joystick buttons 84 Always On USB Type C Charging 85 Common problems 86 Product specific problems 89 Universal Serial Bus USB specific problems 90 Speakers Specific Problems 92 Regulatory information 93 FCC notices U S only and other regulatory information 93 EU product database for energy label and product information s...

Страница 6: ...e that your monitor is electrically rated to operate with the AC power available in your location Keep the monitor in room temperature Excessive cold or hot conditions can have an adverse effect on the liquid crystals of the display Connect the power cable from the monitor to a wall outlet that is near and accessible See Connecting your monitor Do not place and use the monitor on a wet surface or ...

Страница 7: ...he list of components that are shipped with your monitor If any component is missing contact Dell 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 Display Stand riser Stand base ...

Страница 8: ...DisplayPort cable DP to DP Cable length 1 80 M HDMI cable Cable length 1 80 M USB Type C cable Cable length 1 00 M USB A to USB C Gen2 Cable Cable length 1 00 M Quick Setup Guide Safety Environmental and Regulatory Information Factory calibration report ...

Страница 9: ...wing experience Removable stand and Video Electronics Standards Association VESA 100 mm mounting holes for flexible mounting solutions Equipped with 1 USB Type C upstream port video and data DP1 4 with Alternate mode PD up to 90 W 1 USB Type C upstream port data only 1 super speed USB 10 Gbps USB 3 2 Gen2 Type C downstream port 1 super speed USB 10 Gbps USB 3 2 Gen2 Type A downstream charging port...

Страница 10: ... or default setting Preset mode Standard it works in compliance with TÜV Rheinland hardware solutions provider WARNING The possible long term effects of blue light emission from the monitor may cause damage to the eyes which includes but is not limited to eye fatigue and digital eye strain ComfortView Plus feature is designed to reduce the amount of blue light emitted from the monitor to optimize ...

Страница 11: ...fying parts and controls Front view Label Description Use 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 ...

Страница 12: ...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 ...

Страница 13: ...ecures the monitor with security lock security lock not included 2 Power connector Connect the power cable shipped with your monitor 3 HDMI port 2 Connect your computer with the HDMI cable 4 Stand lock feature To lock the stand to the monitor using a M3 x 6 mm screw screw not included 5 DisplayPort Connect your computer with the DisplayPort cable ...

Страница 14: ...ble that came with your monitor to the computer This port supports USB data transfer at 10 Gbps USB 3 2 Gen2 Once this cable is connected you can use the USB connectors on the monitor NOTE USB Type C is not supported on versions of Windows prior to Windows 10 9 Super speed USB 10 Gbps USB 3 2 Gen2 Type A downstream port 4 Connect your USB device NOTE To use this port you must connect the USB Type ...

Страница 15: ...ble shipped with your monitor to the USB Type C upstream port on the monitor and to your computer 13 Speakers Provides audio output Model U3423WE Screen type Active matrix TFT LCD Panel technology In Plane Switching Technology Aspect ratio 21 9 Viewable image Diagonal Width active area Height active area Total area 867 16 mm 34 14 in 800 05 mm 31 50 in 335 05 mm 13 19 in 268056 75 mm2 415 49 in 2 ...

Страница 16: ...ort video and data Alternate mode with DisplayPort 1 4 Power Delivery PD up to 90 W 1 x USB C upstream port data only 10 Gbps USB 3 2 Gen2 4 x super speed USB 10 Gbps USB 3 2 Gen2 Type A downstream port 1 x super speed USB 10 Gbps USB 3 2 Gen2 Type C downstream port with charging capability at 15 W maximum 1 x super speed USB 10 Gbps USB 3 2 Gen2 Type A with BC1 2 charging capability at 2 A maximu...

Страница 17: ...splay capabilities HDMI DisplayPort USB Type C alternate mode 480p 576p 720p 1080i 1080p For HDMI input only Adjustability Height adjustable stand Tilt Swivel Slant adjust 150 mm 5 to 21 30 to 30 4 to 4 NOTE Do not mount or use this monitor in portrait vertical orientation or inverse 180 landscape mount as it may damage the monitor Built in speakers 2 x 5 W sound output Dell Display Manager compat...

Страница 18: ...A 1152 x 864 67 5 75 0 108 0 VESA 1280 x 800 R 49 3 59 9 71 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 2560 x 1440 88 8 60 0 241 5 VESA 3440 x 1440 88 8 60 0 319 8 Requires a graphics card that supports HDMI 2 1 TMDS Electrical specifications Model U3423WE Video input signals HDMI 2 1 TMDS DisplayPort 1...

Страница 19: ... 8 0 version 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 obligation to update such information Accordingly the customer should not rely upon this information in making decisions about electrical tolerances or otherwise No warranty as to accuracy or com...

Страница 20: ...hese cables Dell does not guarantee video performance on cables that are not shipped with your Dell monitor Dimensions with stand Height extended 542 77 mm 21 37 in Height compressed 392 77 mm 15 46 in Width 813 26 mm 32 02 in Depth 237 44 mm 9 35 in Dimensions without stand Height 359 05 mm 14 14 in Width 813 26 mm 32 02 in Depth 57 50 mm 2 26 in 60 15 mm 2 37 in Stand dimensions Height extended ...

Страница 21: ... 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 Operating 10 to 80 non condensing Non operating Storage 5 to 90 non condensing Shipping 5 to 90 non condensing Operating 5000 m 16404 ft maximum Non operating 12192 m 40000 ft maximum 675 58 BTU hour maximum 105 77 BTU hour typical Weight without stand assembly For wall mount or VESA mount...

Страница 22: ...mber 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 DisplayPort connector in ...

Страница 23: ...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 ...

Страница 24: ... speed 12 Mbps 4 5 W NOTE This monitor is super speed USB 10 Gbps USB 3 2 Gen2 compatible Up to 2 A on USB downstream port with battery icon with BC1 2 compliance devices or normal USB devices USB Type C Description Video DisplayPort 1 4 Data Super speed USB 10 Gbps USB 3 2 Gen2 Power Delivery PD Up to 90 W HBR3 DisplayPort 1 4 DP audio is supported USB 3 2 downstream connector Pin number 9 pin si...

Страница 25: ...1 A12 GND B12 GND USB ports 1 super speed USB 10 Gbps USB 3 2 Gen2 Type C upstream video data bottom 1 super speed USB 10 Gbps USB 3 2 Gen2 Type C upstream data only bottom 1 super speed USB 10 Gbps USB 3 2 Gen2 Type C downstream bottom 5 super speed USB 10 Gbps USB 3 2 Gen2 Type A downstream bottom Power Charging Port the port with battery icon supports up to 2 A fast charging capability if the d...

Страница 26: ...e computer NOTE The USB ports on the monitor work only when the monitor is turned On or in Standby mode If you turn Off the monitor and then turn it On the attached peripherals may take a few seconds to resume normal functionality RJ45 Connector Pin Signal P1 MDI0 P2 MDI0 P3 MDI1 P4 MDI1 P5 CT P6 CT P7 MDI2 P8 MDI2 P9 MDI3 P10 MDI3 ...

Страница 27: ...to 1000 Mbps NOTE This LAN port is 1000Base T IEEE 802 3az compliant supporting Mac Address Printed on model label Pass thru MAPT Wake on LAN WOL from standby mode S3 only and UEFI PXE Boot function UEFI PXE Boot is not supported on Dell Desktop PC s except for OptiPlex 7090 3090 Ultra Desktop these 3 features depend on BIOS settings and version of the OS Functionality may vary with non Dell PC s ...

Страница 28: ...een Speed indicator Amber On 1000 Mbps Green On 100 Mbps Off 10 Mbps Left LED Green Link Activity indicator Blinking Activity on the port Green On Link is being established Off Link is not established NOTE RJ45 cable is non in box standard accessory LED Color Description ...

Страница 29: ...in injury CAUTION Viewing the monitor screen for extended periods of time may result in eye strain For comfort and efficiency observe the following guidelines when setting up and using your computer workstation Position your computer so that the monitor and keyboard are directly in front of you as you work Special shelves are commercially available to help you correctly position your keyboard To r...

Страница 30: ...irectly in front of the user feet flat on the floor wrists relaxed and flat monitor and keyboard positioned directly in front of the user Let your upper arms rest naturally on both sides Ensure that your feet are resting flat on the floor When sitting make sure that the weight of your legs is on your feet and not on the front portion of your seat Adjust your chair s height or use a footrest if nec...

Страница 31: ...cables from the monitor Place the monitor in the original box with the original packing materials Hold the bottom edge and the side of the monitor firmly without applying excessive pressure when lifting or moving the monitor When lifting or moving the monitor ensure the screen is facing away from you and do not press on the display area to avoid any scratches or damage When transporting the monito...

Страница 32: ...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 the Dell monitor screen lightly dampen a soft clean cloth with water If possible use a special screen cleaning tissue or solution suitable for the Dell monitor screen CAUTION Do not use detergent...

Страница 33: ...per cleaning methods and the use of benzene thinner ammonia abrasive cleaners alcohol compressed air detergent of any kind will lead to a Customer Induced Damage CID CID is not covered under the standard Dell warranty If you notice white powder when you unpack your monitor wipe it off with a cloth Handle your monitor with care as a darker colored monitor may get scratched and show white scuff mark...

Страница 34: ...d from any other source follow the setup 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 clockwise 5...

Страница 35: ...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 36: ...36 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 37: ...ptimally with the Dell supplied cables inside the box Dell does not guarantee the video quality and performance if non Dell cables are used 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 images are for the purpose of illustration only The appearance of the computer may vary To connect your moni...

Страница 38: ...ort cable Connecting the HDMI cable Connecting the USB Type C cable NOTE Use the USB Type C cable shipped with monitor only This port supports DisplayPort Alternate Mode DP1 4 standard only The USB Type C power delivery compliant port PD Version 3 0 delivers up to 90 W of power ...

Страница 39: ...B downstream port After you have completed connecting the DisplayPort HDMI USB Type C cable follow the procedures below to connect the USB cable to the computer and complete your monitor setup 1 a Connect one computer connect the USB 3 2 Gen2 Type C upstream port data only cable supplied to an appropriate USB 3 2 Gen2 port on your computer b Connect two computers connect the USB 3 2 Gen2 Type C up...

Страница 40: ...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 ...

Страница 41: ...e monitor power button This feature is only supported with Dell platform which has built in DPBS function and is only supported over USB C interface To make sure the DPBS function works for the first time perform the following steps on the DPBS supported platform in the Control Panel first NOTE DPBS only supports the USB Type C upstream port with icon 1 Go to Control Panel ...

Страница 42: ...42 Setting up the monitor 2 Select Hardware and Sound followed by Power Options 3 Go to System Settings ...

Страница 43: ...press the power button there are a few options for selection namely Do nothing Sleep Hibernate Shut down You can select Sleep Hibernate Shut down NOTE Do not select Do nothing otherwise the monitor power button will not be able to sync with PC system power state ...

Страница 44: ...C and the monitor are OFF 2 Press the monitor power button to turn ON the monitor 3 Connect the USB C cable from the PC to the monitor 4 Both the monitor and PC will turn ON normally If not press either the monitor power button or PC power button to boot up the system NOTE Ensure that Dell Power Button Sync is set to On See Dell Power Button Sync ...

Страница 45: ...C state is as follows Not all Dell PC systems support to wake up the platform via the monitor Upon USB C cable connection mouse movement or keyboard press might be required to wake the system monitor up from sleep or hibernate When you press the monitor power button or PC power button the Monitor PC state is as follows ...

Страница 46: ... Button Sync When the monitor and the PC power state are both ON press and hold the monitor power button for 4 seconds the screen prompt will ask if you would like to shut down the PC When the monitor and the PC power state are both ON press and hold the monitor power button for 10 seconds the PC will shut down ...

Страница 47: ...nected monitor will sync with the PC For example when the PC and two monitors are in an initial ON power state pressing the power button on Monitor 1 or Monitor 2 will turn OFF the PC Monitor 1 and Monitor 2 Ensure to check the Dell PC for DPBS supportability NOTE DPBS only supports the USB Type C upstream port with icon ...

Страница 48: ...ure that Dell Power Button Sync is set to ON see Dell Power Button Sync When the PC and two monitors are in an initial OFF power state pressing the power button on Monitor 1 or Monitor 2 will turn ON the PC Monitor 1 and Monitor 2 ...

Страница 49: ...the purpose of illustration only The appearance of the lock may vary 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 surface and handle it carefully NOTE The following steps are specifically for removing the stand that is shipped with your monitor If you are removing a stand that you purchased from any other...

Страница 50: ... a stable flat table 2 Remove 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...

Страница 51: ... the monitor Using the Joystick Control Use the joystick control on the rear of the monitor to make OSD adjustments 1 Press the joystick button to launch the OSD main menu 2 Move the joystick up down left right to toggle between options 3 Press the joystick button again to confirm the settings and exit ...

Страница 52: ...eft 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 52 Operating the monitor When you press the joystick button the OSD Status Bar appears to let you know the current settings of some OSD functions The following table describes the Menu Launcher functions Menu Launcher Icon Desc...

Страница 53: ...m and return to the previous menu move the joystick to the left until you exit 2 Shortcut key Brightness Contrast Select this icon to adjust the brightness and contrast level 3 Shortcut key PIP PBP Select this icon to set PIP PBP 4 Shortcut key USB Switch Select this icon to switch between the USB upstream sources in PIP PBP mode 5 Shortcut key Input Source Select this icon to set the Input Source...

Страница 54: ...djustment Brightness Brightness adjusts the luminance of the backlight Toggle the joystick up to increase the brightness and toggle the joystick down to decrease the brightness min 0 max 100 Contrast Adjusts the Brightness first and then adjust the Contrast only if further adjustment is necessary Toggle the joystick up to increase the contrast and toggle the joystick down to decrease the contrast ...

Страница 55: ...o confirm the selection DP Select the DP input when you are using the DisplayPort DP connector Press the joystick to confirm the selection HDMI 1 Select the HDMI 1 input when you are using the HDMI 1 connector Press the joystick to confirm the selection HDMI 2 Select the HDMI 2 input when you are using the HDMI 2 connector Press the joystick to confirm the selection Auto Select Turning on the func...

Страница 56: ...ideo input when the USB Type C cable is connected NOTE Auto Select for USB C is available only when Auto Select is on Rename Inputs Allows you to select the input name for the selected input source The options are PC PC 1 PC 2 Laptop Laptop 1 and Laptop 2 NOTE For Input with USB C Charging the wattage value shall remain after renaming e g PC 1 90W NOTE Input names in warning messages KVM and Displ...

Страница 57: ...tions Color Temp Allows you to select the color temperature 5000K 5700K 6500K 7500K 9300K and 10000K Press the joystick to confirm the selection Color Space Allows you to set the color space to sRGB matches 99 sRGB Rec 709 matches 100 Rec 709 DCI P3 reproduces 98 of DCI P3 digital cinema color standard Display P3 reproduces 98 of Display P3 NOTE If you select the color space ICC profile from your ...

Страница 58: ...e your own preset color mode 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 USB Type C DisplayPort or HDMI cable YCbCr Select this option if your media player supports only YCbCr output Press the joystick to confirm the selection Hue This feature can shift the color of the video image to green...

Страница 59: ...u select Movie or Game preset mode Reset Color Resets your monitor s color settings to the factory settings Display Use the Display menu to adjust images Aspect Ratio Adjusts the image ratio to 21 9 Auto Resize 4 3 or 1 1 Sharpness This feature can make the image look sharper or softer Toggle the joystick up or down to adjust the sharpness from 0 to 100 Response Time Allows you to set the Response...

Страница 60: ... advised to use factory default brightness setting when Uniformity Compensation is turned on For other brightness level setting the uniformity performance may deviate from the data shown on the Factory Calibration Report USB C Prioritization Allows you to specify the priority to transfer the data with high resolution High Resolution or high speed High Data Speed when using the USB Type C port Disp...

Страница 61: ...elected the Wake on Connect function will remain active Reset Display Resets all display settings to the factory preset values PIP PBP This function brings up a window displaying image from another input source X X X X X X X X Sub Window Main Window USB C DP USB C DP HDMI 1 HDMI 1 HDMI 2 HDMI 2 NOTE The images under PBP will be displayed at the center of the screen not full screen ...

Страница 62: ...nt video signals that may be connected to your monitor for the PIP PBP sub window USB Switch Select to switch between the USB upstream sources in PIP PBP mode Video Swap Select to swap videos between main window and sub window in PIP PBP mode Audio Allows you to set the audio source between the Main window and the Sub window Contrast Sub Adjust the contrast level of the picture in PIP PBP Mode Tog...

Страница 63: ...port is active NOTE To prevent data damage or loss before changing USB upstream ports make sure that NO USB storage devices are in use by the computer connected to the monitor s USB downstream port Ethernet Switch Mode Allows you to set the Ethernet switch mode Tie to KVM When KVM USB switches Ethernet switches together Prompt when KVM switches When KVM USB switches a message prompts user to decid...

Страница 64: ... of keyboard and mouse Reset USB Resets all settings under the USB menu to the factory preset values Audio Volume Allows you to set the volume level of speakers Toggle the joystick up or down to adjust the volume level from 0 to 100 Speaker Allows you to enable or disable the speaker function Reset Audio Select this option to restore default audio settings ...

Страница 65: ...e eight languages English Spanish French German Brazilian Portuguese Russian Simplified Chinese or Japanese Transparency Select this option to change the menu transparency by toggling the joystick up or down min 0 max 100 Timer Sets the length of time the OSD will remain active after the last time you pressed a button Toggle the joystick up or down to adjust the slider in 1 second increments from ...

Страница 66: ...on is locked and not accessible by the user Menu Power Buttons Both the joystick the Power button 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 joystick to the up or down or left or right for 4 seconds to set the lock options NOTE To unlock the button s press and hold the joystick to the up...

Страница 67: ...y 5 Power Button LED Allows you to set the power LED indicator on or off to save energy USB C Charging 90W Allows you to enable or disable the Always On USB Type C Charging function during monitor 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 Fast Wakeup Allows you to enable or disable monitor fa...

Страница 68: ...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 69: ... your warranty status update drivers on Dell s website etc Self Diagnostic Press the joystick to initiate the self diagnostic process 1 When initiated a gray screen appears 2 Carefully inspect the screen for abnormalities 3 Press the joystick The color of the screen changes to red 4 Inspect the display for any abnormalities 5 Repeat steps 3 and 4 to inspect the display in green blue black white an...

Страница 70: ...ans 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 3440 x 1440 Factory Reset Restore all preset values to the factory default settings These are also the settings for ENERGY STAR tests ...

Страница 71: ...r the first time the following message appears NOTE If you select Yes the message will not appear the next time you change the Brightness setting When you change the default setting of power saving features for the first time such as Uniformity Compensation USB C Charging 90W Other USB Charging or Fast Wakeup the following message appears ...

Страница 72: ...following message before the Lock function is activated NOTE The message may be slightly different according to the selected settings 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 The OSD functions only in the normal operation mode If you press any button other than the Power Button during the Standby m...

Страница 73: ...ected and the corresponding cable is not connected a floating dialog box as shown below appears 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 When Factory Reset is selected th...

Страница 74: ...74 Operating the monitor When Yes is selected the following messages appear ...

Страница 75: ...ode is set to Prompt then KVM switches the following message appears NOTE When No and do not ask again is selected Ethernet Switch Mode will change to Switch Manually When Yes and do not ask again is selected Ethernet Switch Mode will change to Tie to KVM See Troubleshooting for more information ...

Страница 76: ...s 11 1 Right click on the desktop and click Display settings 2 If you have more than one monitor connected ensure to select U3423WE 3 Click the Display Resolution dropdown list and select 3440 x 1440 4 Click Keep changes If you do not see 3440 x 1440 as an option you must update your graphics driver to the latest version Depending on your computer complete one of the following procedures If you ha...

Страница 77: ...rs from a single set of keyboard and mouse connected to the monitor a When connecting HDMI USB C data only to computer 1 and DP USB C video and data to computer 2 NOTE The USB Type C connections currently only support data transfer Ensure that USB for HDMI is assigned to USB C2 and DP is assigned to USB C1 90W ...

Страница 78: ...ion currently supports video and data transfer Make sure USB for HDMI is assigned to USB C2 NOTE As the USB Type C video and data 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 ...

Страница 79: ...ing the monitor 79 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 ...

Страница 80: ...80 Operating the monitor 3 Ensure that the USB ports and the video inputs are paired accordingly NOTE For USB Type C video and data connection there is no further setting required ...

Страница 81: ...d 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 Vertical extension NOTE The stand extends vertically up to 150 mm The figure below illustrates how to exte...

Страница 82: ...82 Operating the monitor Slant adjust With the stand attached to the monitor you can adjust the monitor to your desired angle with the slant adjust feature ...

Страница 83: ...g 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 depending upon the selected input one of the dialogs shown below will continuously scroll through the screen NOTE The message may be slightly different according to the connected input signal 4 This box also appears du...

Страница 84: ...ck the buttons 1 Toggle and hold the joystick to the up or down or left or right for about 4 seconds until a pop menu appears 2 Select one of the following options Menu Buttons All joystick functions are locked and not accessible by the user Power Buttons Only the Power Button is locked and not accessible by the user Menu Power Buttons Both the joystick the Power Button are locked and not accessib...

Страница 85: ... charge your notebook or mobile devices through the USB Type C cable even when the monitor is powered off See USB C Charging 90W for more information You may verify your current firmware revision in Firmware If this is not available go to the Dell download support site for the latest application installer Monitor Firmware Update Utility exe and refer to the Firmware Update Instruction User s Guide...

Страница 86: ...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...

Страница 87: ...ogy For more information on Dell Monitor Quality and Pixel Policy see Dell Support site at http 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...

Страница 88: ...able connecting the 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 secu...

Страница 89: ... with the buttons on the front panel 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 so...

Страница 90: ... connection Network dropped or intermittent Check to ensure USB C Prioritization is set to High Data Speed Do not turn Off the display during network connection Common symptoms What you experience Possible solutions USB interface 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...

Страница 91: ... Gen2 capable Some computers have USB 3 2 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 2 device is plugged in Wireless USB peripherals responding slowly or only working as the distance between itself and its re...

Страница 92: ...s Cannot hear any sound Turn Off the monitor unplug the monitor power cord replug it and then turn On the monitor Ensure the audio cable is connected correctly between the Audio Line Out port and the external speaker Disconnect reconnect the audio cable from the Audio Line Out port and the external speaker Reset the monitor to factory settings ...

Страница 93: ...d other regulatory information For FCC notices and other regulatory information see the regulatory compliance website located at www dell com regulatory_compliance EU product database for energy label and product information sheet U3423WE https eprel ec europa eu qr 1264609 ...

Страница 94: ... issues see www dell com contactdell NOTE Availability varies by country and product and some services may not be available in your country 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 ...

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