Dell U3425WE UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide
Dell U3425WE Manual
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- Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 1
Dell UltraSharp 34 Curved Thunderbolt™ Hub Monitor U3425WE User's Guide Model: U3425WE Regulatory model: U3425WEb - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 2
. 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 © 2024 Dell Inc. or its subsidiaries. All rights reserved. This product is protected by - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 3
Contents Safety instructions 6 About your monitor 7 Package contents 7 Product features 9 Operating system compatibility 13 Identifying parts and controls 13 Front view 13 Top view 14 Back view 15 Bottom view 16 Monitor specifications 20 Resolution specifications 22 Supported video modes - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 4
USB Type-C cable 48 Connecting the Thunderbolt™ 4 passive cable 48 Connecting the monitor for Thunderbolt™ daisy chain function . 49 Connecting the monitor for RJ45 cable (optional 50 Dell Power Button Sync (DPBS 51 Connecting the monitor for DPBS for the first time 53 Using DPBS function 54 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 5
swivel 97 Vertical extension 97 Slant adjust 98 Troubleshooting 99 Self-test 99 Built-in diagnostics 100 Common problems 101 Product specific problems 105 Universal Serial Bus (USB) specific problems 107 Speakers specific problems 108 Regulatory information 109 FCC notices (U.S. only) and - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 6
marked on the product. • Certain monitors can be wall mounted using the VESA mount that is sold separately. Ensure to use the correct VESA specifications as mentioned in the wall mounting section of the User's Guide. For information on safety instructions, see the Safety, Environmental, and - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 7
table provides the list of components that are shipped with your monitor. If any component is missing, contact Dell. For more information, see Contacting Dell. NOTE: Some items may be optional and may not ship with your monitor. Some features may not be available in certain countries. Component - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 8
DisplayPort) (cable length: 1.80 M) HDMI cable (cable length: 1.80 M) Thunderbolt™ 4 passive cable (cable length: 1 M) USB Type-A to USB Type-C Gen2 cable (cable length: 1 M) • Quick Setup Guide • Safety, Environmental, and Regulatory Information • Factory calibration report 8 │ About your - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 9
Product features The Dell U3425WE monitor has an active matrix, Thin-Film Transistor (TFT), Liquid Crystal Display (LCD) and LED backlight. The monitor features include: • 867.16 mm (34.14 in.) viewable area (measured diagonally). 3440 x 1440 (21:9) resolution, plus full-screen support for lower - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 10
to 2 computers from a single set of keyboard and mouse connected to the monitor. • Supports Auto KVM for multiple input setup. • Power button and OSD menu lock. . Dell ComfortView Plus feature is enabled by default on your monitor. • This monitor uses a low blue light panel. When the monitor is - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 11
, and freedom of movement). For more information around TÜV Eye Comfort certification please refer to: https://www.tuv.com/world/en/eye-comfort.html About your monitor │ 11 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 12
(CIE 1931) & sRGB4 Min.95% (CIE 1931) Eye Comfort User Guide Remark User guide Yes Yes Yes 1 Software controls the blue light emission by reducing excessive blue a standard red, green, and blue color space that is in use on monitors, printers, and the World Wide Web. 5 DCI-P3, short for Digital - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 13
system versions, patches, or updates are available. • Specific release date(s) when Dell and Alienware branded monitor firmware, software application, or driver updates are available on the Dell support website. Identifying parts and controls Front view Label Description 1 Power LED indicator - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 14
and Auto Color Temp.. NOTE: If the Ambient light sensor detects abnormal change in the light level, see Ambient light detection anomaly. 14 │ About your monitor - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 15
number, and Service Tag label Power On/Off button Joystick Cable-management slot Use Wall mount monitor using VESAcompatible wall mount kit (100 mm x 100 mm). Lists the regulatory approvals. Releases stand from the monitor. Refer to this label if you need to contact Dell for technical support. To - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 16
not included). Connect the power cable (shipped with your monitor). Connect your computer with the HDMI cable (shipped with your monitor). Connect your computer with the DisplayPort cable (shipped with your monitor). To lock the stand to the monitor using a M3 x 6 mm screw (screw not included). 16 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 17
resolution of 3440 x 1440 at 120 Hz, PD 20 V/4.5 A, 15 V/3 A, 9 V/3 A, and 5 V/3 A. U3425WE supports daisy chain through Thunderbolt™ 4. To set up daisy-chain connection, refer to the instructions in Connecting the monitor for Thunderbolt™ daisy chain function. NOTE: Thunderbolt™ 4 is not - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 18
-A to USB Type-C Gen2 cable (shipped with your monitor) - Thunderbolt™ 4 passive cable (shipped with your monitor) - USB Type-C to USB Type-C cable (optional)** 11 Audio line-out port Connect your external speakers.*** 12 RJ45 port Supports Ethernet connection 10/100/1000/ 2500 Mbps. Connect - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 19
connected to a USB downstream port, it is NOT recommended to connect any other USB devices to the adjacent port(s). **Purchased separately. ***Headphone usage is not supported for the audio line out connector. About your monitor │ 19 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 20
Monitor specifications Model Screen type Panel technology Aspect ratio Viewable Luminance output Contrast ratio Faceplate coating Backlight Response time Curvature Color depth Color gamut Calibration accuracy U3425WE Active matrix - TFT LCD In-Plane Switching Technology 21:9 867.16 mm (34.14 in - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 21
100 Hz TMDS as per specified in HDMI 2.1) • 1 x DP 1.4 (HDCP1.4 & 2.2) (supports up to WQHD 3440 x 1440 120 Hz) • 1 x Thunderbolt™ 4 downstream port (15 USB 10 Gbps, USB 3.2 Gen2) with power charging (15 W) Border width (edge of monitor to active area) 10.45 mm (Top) 9.78 mm (Left/Right) 13.90 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 22
™ 4: 48 Hz to 120 Hz (automatic) • HDMI: 48 Hz to 100 Hz (automatic) 3440 x 1440 at 120 Hz Supported video modes Model Video display capabilities (HDMI & DisplayPort & Thunderbolt™ 4 alternate mode) U3425WE 480p, 576p, 720p, 1080i*, 1080p *Supported by HDMI input only. 22 │ About your monitor - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 23
) 25.2 31.5 28.3 40.0 49.5 65.0 78.8 108.0 71.0 108.0 135.0 162.0 148.5 241.5 319.8 538.4 666.1 Sync polarity (Horizontal/ Vertical) *Requires a graphics card that supports HDMI, DP, HDMI 2.1 (TMDS) and Thunderbolt 4 or USB Type-C. **For HDMI input. ***For DP and Thunderbolt input. About your - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 24
for daisy chain OSD Display Info: Maximum external monitor resolution that can be supported Link rate (current) 3440 x 1440 at 120 Video input signals AC input voltage/ frequency/current Inrush current Power consumption U3425WE • HDMI 2.1 (TMDS)*/DisplayPort 1.4**, 600 mV for each differential line - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 25
information in making decisions about electrical tolerances or otherwise. No warranty as to accuracy or completeness is expressed or implied. NOTE: This monitor is ENERGY STAR certified. This product qualifies for ENERGY STAR in the factory default settings which can be restored by "Factory Reset - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 26
Model U3425WE Signal cable type • Digital: DisplayPort, 20 pins • Digital: HDMI, 19 pins • Digital: Thunderbolt™ 4, 24 pins • Universal Serial Bus: USB Type-A to USB Type-C NOTE: Dell monitors are designed to work optimally with the video cables that are shipped with your monitor. As Dell - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 27
cables) Weight of stand assembly Environmental characteristics 7.78 kg (17.15 lb) 2.59 kg (5.71 lb) Model U3425WE Compliant standards • ENERGY STAR certified monitor • EPEAT registered where applicable. EPEAT registration varies by country. See www.epeat.net for registration status by country - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 28
™ 4 passive cable Thunderbolt™ 4 active cable* 3440 x 1440 @ Thunderbolt™ 4 120 Hz active cable* Not supported USB Type-C to USB Type-C cable* USB Type-C to USB Type-C cable* *Purchased separately. NOTE: Monitor daisy chain only via Thunderbolt™ port. NOTE: Set the OSD for "Thunderbolt Daisy - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 29
x 1440 @ 120 Hz Maximum resolution 3440 x 1440 @ 100 Hz 3440 x 1440 @ 30 Hz Maximum resolution 3440 x 1440 @ 120 Hz 3440 x 1440 @ 120 Hz About your monitor │ 29 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 30
(n) GND ML3 (p) ML2 (n) GND ML2 (p) ML1 (n) GND ML1 (p) ML0 (n) GND ML0 (p) GND GND AUX (p) GND AUX (n) Hot Plug Detect Re-PWR +3.3 V DP_PWR 30 │ About your monitor - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 31
0TMDS CLOCK+ TMDS CLOCK SHIELD TMDS CLOCKCEC Reserved (N.C. on device) DDC CLOCK (SCL) DDC DATA (SDA) DDC/CEC Ground +5 V POWER HOT PLUG DETECT About your monitor │ 31 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 32
speed Full speed Data rate 10 Gbps 480 Mbps 12 Mbps Maximum power supported* 4.5 W 4.5 W 4.5 W *Up to 2 A on USB downstream port (with compliance devices or normal USB devices. battery icon) with BC1.2 NOTE: This monitor is super speed USB 10 Gbps (USB 3.2 Gen2) compatible. USB Type-C USB - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 33
number B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 Signal name GND TX2+ TX2VBUS CC2 D+ DSBU2 VBUS RX1RX1+ GND About your monitor │ 33 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 34
- rear (4) and bottom (1) Power Charging Port - the port with battery icon; supports up to 2 A fast-charging capability if the device is BC1.2 compatible. 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, - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 35
N/A Supported, USB 2.0 USB-A 3.2 Gen1 USB A - C cable N/A Supported, USB 2.0/3.2 Gen1 USB-C 3.2 Gen1 (Data only) USB-C Gen2 cable* N/A Supported, USB 2.0/3.2 Gen1 USB-C 3.2 Gen2 (Data only) USB-C Gen2 cable* N/A Supported, USB 2.0/3.2 Gen2 *Purchased separately. About your monitor - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 36
RJ45 connector Pin number 1 2 3 4 5 6 7 8 9 10 Pin number 11 12 13 14 MDI0+ MDI0MDI1+ MDI1CT CT MDI2+ MDI2MDI3+ MDI3Amber + N/A N/A Signal Green + + - 36 │ About your monitor - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 37
Firmware Interface. NOTE: WOL S4 and WOL S5 are capable only with Dell Systems that support DPBS and are with Thunderbolt/USB-C (MFDP) interface connection. NOTE: Any issue related to WOL, users should debug the computer without the monitor. After the problem is solved, then connect to the - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 38
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 usability. For more information on Dell Monitor Quality and Pixel Policy, see www - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 39
lights, desk lamps, and the curtains or blinds on nearby windows) to minimize reflections and glare on the monitor screen. • Use a chair that provides good lower-back support. • Keep your forearms horizontal with your wrists in a neutral, comfortable position while using the keyboard or mouse - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 40
is handled safely when lifting or moving it, follow these guidelines: • Before moving or lifting the monitor, turn off your computer and the monitor. • Disconnect all cables from the monitor. • Place the monitor in the original box with the original packing materials. • Hold the bottom edge and the - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 41
do not press on the display area to avoid any scratches or damage. • When transporting the monitor, avoid any sudden shock or vibration to it. • When lifting or moving the monitor, do not turn the monitor upside down while holding the stand base or stand riser. This may result in accidental damage - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 42
outlet. For best practices, follow the instructions in the list below when unpacking, cleaning, or handling your monitor: • Use a clean cloth that is slightly dampened with water to clean the stand assembly, the screen, and the chassis of your Dell monitor. If available, use a screen-cleaning tissue - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 43
Attaching the stand NOTE: The stand assembly is not pre-installed when the monitor is shipped from the factory. NOTE: The following instructions are applicable only for the stand that was shipped with your monitor. If you are attaching a stand that you purchased from any other source, follow the - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 44
of the stand to the groove on the back of the display. b. Press the stand down till it snaps into place. 44 │ Setting up the monitor - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 45
7. Hold the stand riser and lift the monitor carefully, then place it on a flat surface. NOTE: Lift the monitor carefully to prevent it from slipping or falling. 8. Remove the protective cover from the monitor. Setting up the monitor │ 45 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 46
begin any of the procedures in this section, follow the Safety instructions. NOTE: Dell monitors are designed to work optimally with the Dellsupplied 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 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 47
fasten the stand riser to a wall using cable tie or a cord that can support the weight of the monitor in order to prevent the monitor from falling. Cable tie or Cord 4. Turn on the monitor and the computer. If your monitor displays an image, installation is complete. If it does not display an image - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 48
only. Connecting the Thunderbolt™ 4 passive cable NOTE: Use the Thunderbolt™ 4 passive cable shipped with your monitor only. • This port supports DisplayPort Alternate Mode (DP1.4 standard only). • The Thunderbolt™ 4 power delivery compliant port (PD Version 3.1) delivers up to 90 W of power. • If - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 49
the Thunderbolt™ daisy chain feature. To make use of this feature, your PC must support Thunderbolt™ feature. NOTE: The maximum number of supported external monitors through daisy chain is subjected to the bandwidth of the Thunderbolt™ 4. NOTE: Remove the rubber plug when using the Thunderbolt - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 50
Connecting the monitor for RJ45 cable (optional) NOTE: The RJ45 cable is not an in-box standard accessory. or NOTE: The USB-C to USB-A connection offers ). or NOTE: To use the computer with USB-C to USB-C connection, purchase a USB Type-C to USB Type-C cable separately. 50 │ Setting up the monitor - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 51
Button Sync (DPBS) feature to allow you to control PC system power state from the monitor power button. This feature is only supported with Dell platform which has built-in DPBS function, and is only supported over Thunderbolt™ 4 interface. To make sure the DPBS function works for the first time - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 52
2. Select Hardware and Sound, followed by Power Options. 3. Go to System Settings. 4. In the drop-down menu of When I 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. 52 │ Setting up the monitor - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 53
. 3. Connect the Thunderbolt™ 4 passive cable (shipped with your monitor) from the PC to the monitor. 4. Both the monitor and PC will turn ON normally. If not, press the power button either on the monitor or the PC to boot up the system. NOTE: Ensure that Dell Power Button Sync is set to On. See - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 54
Waking on the Thunderbolt™ 4 cable When you connect the Thunderbolt™ 4 passive cable, the Monitor/PC state is as follows: *Not all Dell PC systems support to wake up the platform through the monitor. *Upon Thunderbolt™ 4 cable connection, mouse movement or keyboard press might be required to wake - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 55
NOTE: You can enable or disable the Dell Power Button Sync function using the OSD. • When the monitor and the PC power state are both ON, press and hold the power button on the monitor for 4 seconds, the screen prompt will ask if you would like to shut down the PC. • When it is - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 56
PC system power state is in sync with the power button on Monitor 1. When you press the power button on Monitor 1 or PC, both Monitor 1 and PC are turned ON. Meanwhile, Monitor 2 will remain OFF. To turn ON Monitor 2, you have to manually press the power button on it. Similarly, a PC is connected to - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 57
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 support. NOTE: DPBS only supports the Thunderbolt™ 4 upstream port with icon. Setting - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 58
Ensure 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. 58 │ Setting up the monitor - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 59
using Kensington lock (optional) The security-lock slot is located at the bottom of the monitor (see Security-lock slot). Secure your monitor to a table using the Kensington security lock. For more information on using the Kensington lock (sold separately), see the documentation that is shipped - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 60
. If you are removing a stand that you purchased from any other source, follow the setup instructions that are 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 at the back of the display. 3. Lift the stand - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 61
) (Screw dimension: M4 x 10 mm). Refer to the instructions that come with the VESA-compatible wall mounting kit. 1. Place the monitor panel on a soft cloth or cushion on a stable flat table. 2. Remove the stand (see Removing the monitor stand). 3. Use a Phillips crosshead screwdriver to remove the - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 62
. Using the joystick control Use the joystick control on the rear of the monitor to make On-Screen Display (OSD) adjustments. 1. Press the joystick to launch the Menu Launcher. 2. Move OSD is displayed, press the joystick to confirm the selection or save the settings. 62 │ Operating the monitor - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 63
describes the Menu Launcher functions: Label 1 Icon Menu Description To launch the On-Screen Display (OSD) main menu. See Accessing the menu system. Operating the monitor │ 63 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 64
shortcut functions, the selected item will be highlighted and shifted to the center position. Press the joystick to enter its submenu. • Display Info: Displays the monitor's current status. • Input Source: To choose an input source from the list of video signals that may be connected to your - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 65
to increase or decrease the brightness level (min. 0/max. 100). The Contrast function adjusts the degree of difference between darkness and lightness on the monitor screen. Move the joystick up or down to increase or decrease the contrast level (min. 0/max. 100). Turns on Auto Brightness and adjusts - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 66
Dell monitors that support this function are connected through daisy chain, the monitors monitor. NOTE: The selected monitor in Dell Display Manager (DDM) is the primary monitor. To change the primary monitor, indicate the preferred monitor in DDM. For more information, see the DDM user guide - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 67
under the Brightness/Contrast menu to the factory preset values. Select between the different video signals that may be connected to your monitor. Thunderbo l t (90W) Select Thunderbolt (90W) when you are using the Thunderbolt™ 4 upstream port. Press the joystick to confirm the selection. DP - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 68
cable is connected. Press the joystick to confirm the selection. NOTE: When Auto Select is set to Off, this function is not available. Resets your monitor input settings to the factory settings. 68 │ Operating the - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 69
of preset color modes. Press the joystick to confirm the selection. • Standard: This is the default setting. Using a low blue light panel, this monitor is certified by TÜV to reduce blue light output and create more relaxing and less stimulating images. • Movie: Loads color settings ideal for movies - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 70
in the OSD menu. NOTE: If you select the color space ICC profile from your PC, the monitor OSD will not change automatically to the respective color space. • Custom Color: Allows you to manually adjust the color settings. Move the joystick to adjust the Gain, Offset, Hue, and Saturation settings and - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 71
you to set the video input mode to: • RGB: Select this option if your monitor is connected to a computer or a media player that supports RGB output. • YCbCr: Select this option if your media player supports only YCbCr output. Press the joystick to confirm the selection. Hue Saturation Reset Color - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 72
Compensation adjusts different areas of the screen with respect to the center to achieve uniform brightness and color over the entire screen. 72 │ Operating the monitor - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 73
PC system power state from the monitor power button. NOTE: When Off is selected, the Wake-on-Connect function remains active. When USB-C/Thunderbolt connection is detected, the computer will be turned on. NOTE: This function is only supported with Dell platform which has built-in DPBS function - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 74
Sub-Window Thunderbo l t (90W) DP - √ √ - √ √ HDMI √ √ - NOTE: The images under PBP mode will be displayed at the center of the split windows. 74 │ Operating the monitor - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 75
, giving a quick understanding of various layout settings, The default setting is Off. PIP/PBP (Sub) Select a video signal that may be connected to your monitor for the PIP/PBP sub-window. Press the joystick to confirm the selection. NOTE: The function is available only when the PIP/ PBP mode is - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 76
source. USB DP assign to HDMI assign to Allows you to assign the USB upstream ports for the input signals (DP and HDMI), thus the monitor's USB downstream port (e.g. keyboard and mouse) can be used by the current input signals when you connect a computer to either one of the upstream ports - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 77
to decide whether to switch Ethernet together. • Switch Manually: When KVM USB switches, Ethernet does not switch. Manually switch Ethernet. Displays the step-by-step KVM setup guide. Follow the steps if you want to connect multiple computers to the monitor and use one setup of keyboard and mouse - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 78
active after your last operation with the joystick. Move the joystick to adjust the slider in 1 second increments, from 5 to 60 seconds. 78 │ Operating the monitor - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 79
Lock With the control buttons on the monitor locked, you can prevent people from accessing the controls. Reset Menu • Menu Buttons: All joystick functions are locked and not the changes and close the pop-up menu. Resets all OSD settings to the factory preset values. Operating the monitor │ 79 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 80
selectable and will be defaulted to On in Off Mode if Monitor is connected to Dell Latitude and Precision notebooks that support Dell Power Button Sync through Thunderbolt/USB Type-C. Under this configuration, the monitor USB-C charging function is always available during Off Mode. 80 │ Operating - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 81
standby mode. When this function is enabled, you will be able to charge your mobile devices through the USB-A cable even when the monitor is in powered off. NOTE: This function is available when the Thunderbolt and USB Type-C cables are unplugged from the upstream ports. If the Thunderbolt - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 82
settings using software on your computer. Enable this function for the best user experience and optimum performance of your monitor. You can disable this function by selecting Off. LCD Conditioning Helps reduce minor cases of image retention. Depending on the degree of image retention, the - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 83
to the factory preset values. Restore all preset values to the factory default settings. These are also the settings for ENERGY STAR® tests. Operating the monitor │ 83 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 84
menu to view the monitor's information or seek Information more monitor support. Display Info Select to display the current settings, firmware version, and service tag of your monitor. Dell Monitor Support To access the general monitor support materials for your monitor, use your smartphone to - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 85
OSD messages Initial Setup When Factory Reset is selected, the following message appears: If you select Yes to reset to default settings, the following message appears: Then if you select No (the default option), the following message appears: Operating the monitor │ 85 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 86
if you select No (the default option), the following message appears: 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 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 87
Brightness is on, if you adjust the brightness level, the following message appears: NOTE: If Yes is selected, Auto Brightness will be disabled. Operating the monitor │ 87 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 88
see the following message before the Lock function is activated: NOTE: The message may be slightly different according to the selected settings. 88 │ Operating the monitor - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 89
Switch Mode is set to Prompt when KVM switches, the following message appears: When the monitor is under DP/HDMI input and the Thunderbolt or USB Type-C cable is connected to a notebook that supports DP Alternate Mode, if Options for Thunderbolt is set to Prompt for Multiple Inputs, the following - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 90
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 according to the selected input signal. See Troubleshooting for more information. 90 │ Operating the monitor - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 91
Locking the control buttons You can lock the monitor control buttons to prevent access to the OSD menu and/ or power button. 1. Move and hold the joystick up or down or or right for about 4 seconds until a menu appears, and then select to unlock and close the pop-up menu. Operating the monitor │ 91 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 92
up to 2 computers from a single set of keyboard and mouse connected to the monitor. a. When connecting DP + USB-C (data only) to computer 1 and HDMI + Thunderbolt to computer 2: NOTE: The USB Type-C connection currently supports data transfer only. Ensure that USB for DP is assigned to USB-C and - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 93
only) to computer 1 and Thunderbolt (90W) to computer 2: Ensure that USB for DP is assigned to USB-C. NOTE: As the Thunderbolt™ 4 upstream port supports the DisplayPort Alternate Mode, there is no need to set USB for Thunderbolt (90W). NOTE: When connecting to different video input sources not shown - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 94
Setting the Auto KVM To set up Auto KVM for your monitor, follow these steps: 1. Go to PIP/PBP > PIP/PBP Mode and select Off. 2. Go to Input Source, ensure to video inputs are paired accordingly. NOTE: For Thunderbolt (90W) connection, there is no further setting required. 94 │ Operating the monitor - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 95
Setting the iMST This monitor supports the internal multi-stream transport (iMST) function for DisplayPort and Thunderbolt input source using the OSD option. To enable this function, go to PIP/PBP > Screen Partition (DP/TBT) > 50% - 50%. Operating the monitor │ 95 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 96
and click Display settings. 2. If you have more than one monitor connected, ensure to select U3425WE. 3. Click the Display Resolution dropdown list and select 3440 procedures: If you have a Dell desktop or laptop: • Go to www.dell.com/support, enter your service tag, and download the latest driver - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 97
If you are attaching a stand that you purchased from any other source, follow the setup 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 assembly is not pre - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 98
Slant adjust With the stand attached to the monitor, you can adjust the monitor to your desired angle with the slant adjust feature. 98 │ Operating the monitor - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 99
Troubleshooting WARNING: Before you begin any of the procedures in this section, follow the Safety instructions. Sel f-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 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 100
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 built-in diagnostic tool, the monitor is functioning properly. Check the video card and computer. 100 │ Troubleshooting - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 101
about common monitor problems you might monitor to factory settings. • Change the video resolution to the correct aspect ratio. Wavy picture or fine movement • Reset the monitor to factory settings. • Check environmental factors. • Relocate the monitor and test in another room. Troubleshooting - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 102
-on pixels Brightness problems Geometric distortion Horizontal/ vertical lines 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 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 103
perform any troubleshooting steps. • Contact Dell immediately. • Ensure that the video cable 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 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 104
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 • Set to High refresh rate or Resolution. missing colors • Check the resolution settings of your graphic card. 104 │ Troubleshooting - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 105
problems Specific symptoms What you experience Possible solutions Screen image is too Image is centered on • Check the Aspect Ratio setting in smal l screen, but does not the Display menu OSD. fill the entire viewing • Reset the monitor the cable from the notebook Troubleshooting │ 105 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 106
over the sensor area. • Wipe clean any dust that may be covering the sensor area. • Ensure the display is not pivoted and placed to another monitor side-byside. 106 │ Troubleshooting - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 107
port (video and data) with icon supports USB 3.2 Gen2 and an output of 90 W. • Check that you use the Thunderbolt™ 4 passive cable shipped with your monitor. Super speed USB 10 Gbps (USB . • Reconnect the USB peripherals (downstream connector). • Reboot the computer. Troubleshooting │ 107 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 108
an appropriate Quick ports on the rear Access USB port at the bottom of the side of the monitor, monitor. the Wireless USB mouse lags or freezes during use Speakers specific problems Specific symptoms No sound coming from the external speakers What you experience Cannot hear any sound Possible - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 109
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 U3425WE: https://eprel.ec.europa.eu/qr/1777749 Regulatory information │ 109 - Dell U3425WE | UltraSharp 34 Curved Thunderbolt Hub Monitor - Users Guide - Page 110
Contacting Dell To contact Dell for sales, technical support, or customer service issues, see www.del l.com/contactdel l. 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
Dell UltraSharp 34 Curved
Thunderboltâ„¢ Hub Monitor -
U3425WE
User’s Guide
Model: U3425WE
Regulatory model: U3425WEb