US
Dell

Dell UltraSharp U4025QW 40" Curved Thunderbolt Monitor

  • 40" curved 5120 x 2160, 21:9
  • 120Hz, IPS Black, 2000:1 contrast
  • 99% DCI-P3 and Display P3
  • Thunderbolt 4, up to 140W power delivery
  • 2.5GbE RJ45, KVM style multi PC control
  • iMST splits into two 2560 x 2160 screens
  • 3 year Dell + 2 year extended protection

Updated 25 days ago · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A huge, sharp ultrawide hub monitor that powers and networks a laptop over one cable, aimed at Mac and Windows professionals. Response time is office grade, so fast gamers will want a dedicated gaming display.

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ASIN: B0FPM26CRRModel: U4025QWCategory: Computer Monitors

Overview

Plugging in one Thunderbolt cable is all it takes to charge a laptop, carry video and connect Ethernet and USB through this Dell UltraSharp. The curved ultrawide panel can split into two virtual monitors, and an ambient light sensor tunes brightness.

One cable desk setups with huge, accurate screen space suit creative and multitasking work. It is a productivity screen, not built for fast gaming.

Who it's for

Designers, developers and analysts on Mac or Windows get wide color and huge workspace. Gamers chasing speed should look at gaming monitors.

Pros and cons

Pros
  • One cable laptop dock
  • High laptop charging power
  • Wide P3 color
  • Built-in 2.5GbE Ethernet
Cons
  • Office grade response time
  • Large desk footprint
  • Only one HDMI port

Performance notes

IPS Black technology deepens blacks over standard IPS, which helps contrast in dark scenes. Thunderbolt carries video, data and charging on one cable. iMST tells the computer it has two monitors so windows snap to each half.

Specifications

BrandDell
ModelU4025QW
Dimensions & fit
Screen size40 inches, curved
Item weight26.9 pounds
Power & efficiency
Power Consumption39.5 watts
Construction & materials
Color Gamut99% DCI-P3, Display P3
Compatibility & installation
ConnectivityThunderbolt 4 (140W), HDMI, DisplayPort, USB-C, USB-A, RJ45 2.5GbE
Included components
Included ComponentsMonitor, stand riser, stand base, factory calibration report, setup guide
Warranty & support
Warranty DescriptionDell 3 year limited plus 2 year CPS protection
Other details
Native Resolution5120 x 2160
Refresh Rate120 Hz
Response Time8 ms
Brightness450 nits
Display TechnologyIPS Black
Aspect Ratio21:9
Adaptive SyncFreeSync, G-Sync compatible
Contrast Ratio2000:1
Total USB ports8

Frequently asked questions

Will the Dell U4025QW charge a MacBook Pro?

It supplies up to 140W over Thunderbolt 4. Dell says it is tested with macOS devices, though some features may not be supported.

Can the Dell U4025QW act as two monitors?

Yes. iMST partitions it into two 2560 x 2160 displays without extra software.

Does the Dell U4025QW have Ethernet?

Yes. A built-in RJ45 port supports up to 2.5GbE.