Dell UltraSharp 40 Curved Thunderbolt™ Hub Monitor - U4025QW

Elevate your performance with a 40-inch curved Thunderbolt™ hub monitor featuring a stunning 5K display and a 120Hz refresh rate.
EU Energy Label
Diagonal Size
39.7"
Resolution / Refresh Rate
5120 x 2160 at 120 Hz
Panel Technology
IPS Black Technology
Adjustability

Height, Tilt, Swivel

Color Gamut

DCI-P3 99%, Display P3 99%, sRGB 100%, BT.709 100%, DCI-P3, Display P3, sRGB & BT.709: Delta E < 2 (Average)

Ports

1 x DisplayPort version 1.4 (DRR for Microsoft Windows) (HDCP 1.4) (supports up to FHD 1920 x 1080 120 Hz)

1 x HDMI (HDCP 1.4)(supports up to FHD 1920 x 1080 120Hz TMDS as per specified in HDMI 1.4)

1 x DisplayPort 1.4 (Out) with MST (HDCP 1.4)

1 x USB Type-C upstream port (video and data) (Alternate mode with DisplayPort 1.4, Power Delivery PD up to 90 W)

1 x USB Type-C upstream port (data only, 10 Gbps USB 3.2 Gen2)

3 x USB Type-A downstream port (SuperSpeed USB 10 Gbps, USB 3.2 Gen 2)

1 x Audio line out

1 x RJ45 Ethernet port, 2.5GbE

1 x USB Type-C downstream port (SuperSpeed USB 10 Gbps, USB 3.2 Gen 2) with power charging (15W)

1 x USB Type-A downstream port (SuperSpeed USB 10 Gbps, USB 3.2 Gen 2) with BC1.2 power charging

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World's first 40" 5K monitor certified for 5-Star Eye Comfort¹

Every aspect of your work springs to life on this curved 5K monitor featuring a 120Hz refresh rate. You'll never miss a single detail.

Smoother visual experience

A 120Hz refresh rate delivers less flicker, more seamless scrolling and smoother motion than 60Hz monitors.

Ambient Light Sensor

A built-in Ambient Light Sensor intelligently optimises brightness and colour temperature based on your surroundings.

Improved ComfortView Plus

Our latest monitors reduce harmful blue light emissions to ≤35%, compared to ≤50% from the previous generation, for all-day eye comfort without sacrificing colour accuracy.

See more detail than ever before

5K

See every detail with complete clarity on a 5K resolution monitor.

99 %

DCI-P3 and Display P3 colour coverage.

IPS Black

Experience deeper blacks with a 2000:1 contrast ratio.

Internal Multi-Stream Transport (iMST)

Partition your display as if there were two 2560x2160 physical monitors instead of one. No external software or DisplayPort splitter needed.

Connect with ease

Thunderbolt™ 4

Power your devices with a single cable connection with up to 140W EPR (Extended Power Range)² power delivery.


Extensive connectivity
Connect all your devices with over a dozen ports, including pop-out quick access ports.
Stay online
Connect to the Ethernet with a built-in RJ45 port with up to 2.5GbE.

Works seamlessly with devices on macOS®*

Tested with devices on macOS, this Thunderbolt monitor with Display P3 colour is your ideal Mac® devices companion for superb colour coverage and accuracy. Daisy chaining³ multiple displays via a single cable requires Thunderbolt connectivity. Please check your device for compatibility, as select M-series chips may not support some features. Install Dell Display and Peripheral Manager application to customise advance settings.

*Based on internal testing of Dell monitors connected to devices on macOS via Thunderbolt, June 2024. Some features may not be supported.

Dell Display and Peripheral Manager

Experience Dell’s singular, innovative application to optimise the performance of your entire Dell PC workspace⁴.

Maximise productivity

Easy Arrange tiles apps across screens with pre-set partitions and customises up to five windows, enhancing multitasking. Easy Arrange Memory saves and restores app profiles manually, on schedule, or at start-up.

Easy navigation

Control and work across multiple network or USB connected PCs and monitors with a single keyboard and mouse, seamlessly transferring files between them⁵.

More manageable

Save time and boost IT efficiency with the Dell Device Management Console to manage your Dell peripheral fleet at scale, from a single cloud-based console. Discover expanded Command Line Interface features from Dell Display and Peripheral Manager⁴.


Disclaimer: Screen image simulated for illustrative purposes only. Monitor model may vary.

Dell Colour Management

Customisable colours

Easily calibrate your monitor’s colours on the new Dell Colour Management software⁶, with Calman Verified certification.


Tailored to you

Create, store, and manage ICC profiles on your computer dynamically through the software dashboard.


Wide compatibility

Dell Colour Management software is compatible with multiple operating systems including Windows and macOS®.

Environmentally-forward thinking

Sustainable materials

This monitor is made with 50% recycled steel, 85% post-consumer recycled plastics including closed-loop plastics, 100% recycled aluminium⁷ and at least 20% recycled glass⁸.

Packaging innovation

Ships in a box made with 100% renewable content that is also recyclable.¹⁰


Energy conservation

Using PowerNap mode in Dell Display Manager lowers energy use by up to 14.8%.⁹

Elevated standards

Meets highest environmental standards and registered EPEAT Gold with Climate+ designation - this monitor has met industry best practices for decarbonisation.¹¹


Connectivity Options

Bottom and rear view

  1. Security lock slot (based on Kensington Security Slot™)
  2. Power connector
  3. HDMI (supports up to 5K2K 5120 x 2160 120Hz FRL, HDR Static Metadata, VRR as per specified in HDMI 2.1.)
  4. DisplayPort 1.4 (HDCP 2.3)
  5. Thunderbolt™ 4 downstream port (15W) for daisy chaining
  6. Thunderbolt™ 4 upstream port (up to 140W EPR ²)
  7. USB Type-C upstream port (SuperSpeed USB 10 Gbps, USB 3.2 Gen 2)
  8. 3x USB Type-A downstream port (SuperSpeed USB 10 Gbps, USB 3.2 Gen 2)
  9. Audio Line-out
  10. USB Type-A downstream port (SuperSpeed 10 Gbps, USB 3.2 Gen 2)
  11. RJ45 Ethernet port, 2.5GbE
  12. Stand lock
  13. 2 x USB Type-C downstream port (SuperSpeed USB 10 Gbps, USB 3.2 Gen2) with power charging (15W)
  14. USB Type-A downstream port (SuperSpeed USB 10 Gbps, USB 3.2 Gen 2) with BC1.2 power charging
  15. Speakers


Included Cables

  • Power cable
  • DisplayPort 1.4 cable - 1.8 m
  • USB Type-A to USB Type-C Gen 2 cable - 1 m
  • Thunderbolt™ cable - 1.5 m
  • HDMI 2.1 cable - 1.8 m

Dimensions and Weight

1. Monitor height with stand (extended / compressed):

622.32 mm / 472.32 mm (24.50 in. / 18.60 in.)

2. Monitor width : 946.62 mm (37.27 in.)

3. Monitor height : 419.14 mm (16.5 in.)

4. Stand width : 391.50 mm (15.37 in.)

5. Monitor depth : 108.04 mm (4.25 in.)

6. Stand height (extended / compressed):

483.30 mm / 436.50 mm (19.03 in. / 17.19 in.)

7. Stand depth : 252.80 mm (9.95 in.)

Weight

Weight with stand and cables: 12.22 kg (26.94 lb)¹²

Weight without stand and cables: 8.35 kg (18.41 lb) ¹²

A brand you can rely on

As the No.1 monitor company worldwide¹³, we take pride in our unyielding commitment to quality and the utmost customer satisfaction.

1. Based on Dell analysis of 5120x2160 resolution monitors, December 2023.

2. Charging speed drops to 90W if PC does not support Extended Power Range (EPR). 90W is within USB Standard Power Range (SPR).

3. Daisy-chaining is supported on select Dell monitors. Please check device compatibility.

4. Based on Dell internal analysis, November 2024.

5. KVM (keyboard, video, mouse) is available on select monitors only. For monitors that don’t support USB KVM, the input source feature is an alternative. You can share multiple input sources to one monitor, but you cannot share one keyboard and mouse.

6. Compatible with external colorimeter (Portrait Displays: C6 HDR2000, X-Rite: i1Display Pro, i1Display Pro Plus, Klein Instruments: K10, Calibrate: ColorChecker Display Pro, ColorChecker Display Plus), sold separately.

7. Based on internal analysis, November 2023. Plastic percentage is based on total plastic weight. Recycled steel: 50% recycled steel in monitor bracket. Recycled aluminum: 100% recycled aluminum in monitor stand.

8. Applicable to all new monitors launching in CY 2024. Recycled glass is present in monitor panel. Based on internal analysis, January 2024.

9. The calculation assumes the monitor is used for 10 hours a day, including 1.5 hours of idle time with display in sleep mode when the device screensaver is on. Based on internal analysis, May 2023.

10. Applies to all Dell monitors launched since 2023. Made from FSC mix sources which is a mix of material from FSC certified forests, recycled content and/or FSC controlled wood. Based on internal analysis, August 2023.

11. Based on internal analysis, November 2023. Based on EPEAT Climate+ Designations achieved in all applicable countries. EPEAT registered where applicable. EPEAT registration varies by country. See www.epeat.net for registration status and tier levels by country.

12. Weights vary depending on configurations and manufacturing variability.

13. Source: IDC Worldwide Quarterly PC Monitor Tracker, Q1 2026. Excludes Alienware & gaming monitors.