Dell UltraSharp U4025QW 40-Inch Curved Thunderbolt Hub Monitor with 5K Display, Height-Adjustable Stand, and Built-In Ambient Light Sensor (Silver)
Dell UltraSharp U4025QW 40-Inch Curved Thunderbolt Hub Monitor with 5K Display, Height-Adjustable Stand, and Built-In Ambient Light Sensor (Silver)
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Dell UltraSharp U4025QW 40-Inch Curved Thunderbolt Hub Monitor with 5K Display, Height-Adjustable Stand, and Built-In Ambient Light Sensor (Silver)

180 ratings

Key item features

  • Smooth Visuals: Features a 120Hz refresh rate for less flicker, seamless scrolling, and smoother motion compared to 60Hz monitors, with 5K resolution for clear detail.
  • Smart Optimization: A built-in Ambient Light Sensor intelligently adjusts brightness and color temperature based on surroundings for optimal viewing.
  • Eye Comfort: Improved ComfortView Plus reduces harmful blue light emissions to 35% or less, ensuring all-day eye comfort without compromising color accuracy.
  • Flexible Display: Internal Multi-Stream Transport (iMST) allows partitioning the display into two virtual 2560x2160 monitors without external software.
  • Robust Connectivity: Offers a Thunderbolt hub with up to 140W EPR power delivery, over a dozen ports including pop-out quick access, and a built-in RJ45 port for up to 2.5GbE Ethernet.
  • Eco-Conscious Build: Constructed with 50% recycled steel, 85% post-consumer recycled plastics, 100% recycled aluminum, and at least 20% recycled glass.
  • Advanced Management: Dell Display Manager provides Easy Arrange for screen organization and remote management features, while Dell Color Management offers Calman Verified color calibration.
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Specs

Screen size, 39.7 inResolution, 5KRefresh rate, 120 HzDisplay, LCDAspect, 21:9Response time, 5 ms

About this item

Product details

Every aspect of your work springs to life on this curved Dell UltraSharp U4025QW 40-Inch Curved Thunderbolt Hub Monitor. You will never miss a single detail. A 120Hz refresh rate delivers less flicker, more seamless scrolling and smoother motion than 60Hz monitors. See every detail with complete clarity on a 5K resolution monitor. It provides DCI-P3 and Display P3 color coverage. Experience deeper blacks with a 2000:1 contrast ratio. Tested with devices on macOS, this Thunderbolt monitor with P3 color is your ideal companion for Mac devices.
Ambient Light Sensor
A built-in Ambient Light Sensor intelligently optimizes brightness and color temperature based on your surroundings.
Improved ComfortView Plus
It reduces harmful blue light emissions to less than or equal to 35 percent, compared to less than or equal to 50 percent from the previous generation, for all-day eye comfort without sacrificing color accuracy.
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
Power your devices with a single cable connection with up to 140W EPR (Extended Power Range) power delivery. Connect all your devices with over a dozen ports, including pop-out quick access ports. Stay online by connecting to the Ethernet with a built-in RJ45 port with up to 2.5GbE.
Dell Display Manager
Organize your screen with Easy Arrange and save profiles with Easy Arrange Memory. Quickly access your favorite features and functions with the menu launcher and hot keys. Control and work across multiple network connected PCs and monitors with a single keyboard and mouse, and easily transfer files between them. Manage your fleet of monitors with remote management features that are automatic, comprehensive and compatible with several tools.
Dell Color Management
Easily calibrate your monitor’s colors on the new Dell Color Management software, with Calman Verified certification. Create, store, and manage ICC profiles on your computer dynamically through the software dashboard. Dell Color Management software is compatible with multiple operating systems including Windows and macOS.
Environmentally-Forward Thinking
This monitor is made with 50 percent recycled steel, 85 percent post-consumer recycled plastics including closed-loop plastics, 100 percent recycled aluminum and at least 20 percent recycled glass. Ships in a box made with 100 percent renewable content that is also recyclable. Using PowerNap mode in Dell Display Manager lowers energy use by up to 14.8 percent. Meets highest environmental standards and registered EPEAT Gold with Climate plus designation - this monitor has met industry best practices for decarbonization.
  • Smoother Visual Experience: The Dell UltraSharp U4025QW 40-Inch Curved Thunderbolt Hub Monitor features 120Hz refresh speed which delivers less flicker, more seamless scrolling and smoother motion than 60Hz monitors
  • Ambient Light Sensor: A built-in Ambient Light Sensor intelligently optimizes brightness and color temperature based on your surroundings
  • Improved ComfortView Plus: It reduces harmful blue light emissions to less than or equal to 35 percent, compared to less than or equal to 50 percent from the previous generation, for all-day eye comfort without sacrificing color accuracy
  • 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
  • Sustainably-Made Monitor: This monitor is made with 50 percent recycled steel, 85 percent post-consumer recycled plastics including closed-loop plastics, 100 percent recycled aluminum and at least 20 percent recycled glass
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Specifications

Screen size

39.7 in

Resolution

5K

Refresh rate

120 Hz

Display

LCD

Warranty

Warranty information

N/A

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Customer ratings & reviews

4.6 out of 5 stars
stars
180 ratings162 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars79% (142)
  2. 4 stars12% (21)
  3. 3 stars2% (4)
  4. 2 stars1% (2)
  5. 1 star6% (11)

Reviews summary

Pros

  • : The monitor renders hues accurately with strong contrast.
  • : Monitor fits two side-by-side windows for office work.
  • : The monitor offers crisp, clear images for productivity.
  • : The monitor produces sharp, accurate images for photo work.
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Showing 1-3 of 162 reviews

Jul 6, 2026
Reviewer name: Dell
5 out of 5 stars
5 out of 5 stars review

Seller Verified Purchase

The Ultimate Home Office Monitor (Once Properly Connected)

I've been using the U4025QW as my primary work-from-home monitor and it has completely transformed my workspace. The 5K2K resolution is incredibly sharp, and the extra vertical space compared to a traditional ultrawide makes a huge difference when working with multiple applications, browser windows, documentation, and spreadsheets. Text clarity is excellent, and the gentle curve feels natural without being distracting. The Thunderbolt hub is fantastic once everything is working. I'm running a single-cable setup to my MacBook Pro that provides video, charging, webcam connectivity, and USB hub functionality. It's exactly the clean workstation experience I was hoping for. The one issue I encountered was during initial setup. The included Thunderbolt cable and one of the USB-C/Thunderbolt ports on my unit would not establish a proper data connection with my MacBook Pro. HDMI worked immediately, but Thunderbolt would only provide charging until I switched to a different certified Thunderbolt cable and used a different Thunderbolt port on the monitor. After that, everything worked perfectly. Dell support was responsive throughout the troubleshooting process. Now that it's configured correctly, I couldn't be happier. Combined with an Ergotron HX arm, this has become the centerpiece of my home office, and I genuinely look forward to working at this desk every day. If your primary use case is productivity on macOS or Windows, I highly recommend this monitor.

Review from Dell US
Helpful?6I3Z663NYWO75539460685
Jul 20, 2026
Reviewer name: Dell
5 out of 5 stars
5 out of 5 stars review

Seller Verified Purchase

Premium Power‑User Display Worth the Investment

I use the Dell UltraSharp 27 Monitor (U2724D) as my main, power‑user display in the CPA firm, and it absolutely earns a 5‑star rating. The 27‑inch panel delivers excellent clarity, color accuracy, and ergonomics, making long days of tax work, research, and multi‑app workflows smooth and comfortable. As a heavy user, I appreciate the professional‑grade build and features that clearly support a long, useful life. The only real drawback is price: it's noticeably more expensive than standard business monitors, and that premium is a bigger factor when you're outfitting multiple high‑end workstations. Still, for intensive daily use, it's worth every dollar.

Review from Dell US
Helpful?6I3Z663NYWO75539460685
Jul 8, 2026
Reviewer name: Anonymous
5 out of 5 stars
5 out of 5 stars review

Seller Verified Purchase

40" Curved Gem

Great monitor. Crystal clear. I like the built in thunderbolt hub for connecting my macbook to the monitor. No more power supply connection or usb hub for the keyboard/mice. This makes for a very clean and easy setup for our business partners. I do use this monitor in a dual monitor role and is very easy to daisy chain the monitors together via either the display for or type c.

Review from Dell US
Helpful?6I3Z663NYWO75539460685
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