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Reviews about this item

Review Summary

2022-12-30T05:35:15

Rated 5 out of 5

Great monitor and impeccable purchase experience with Adorama

Great monitor and impeccable purchase experience with Adorama, super fast shipping. This monitor is incredible, I thought it not being HDR or OLED would be an issue for image quality, but I was wrong, the image is great. I have professional gear to calibrate monitors and this came nearly calibrated out of the box, and already with the latest firmware. It has so many connections in and out that are super handy. Resolution and aspect ratio is great for professional use and visual related work, especially for 3D softwares as you can fit many windows and tabs in one screen. Be aware it's a big screen and quite heavy as the base has some extra weight to handle the screen. Only 3 downsides are: - The resolution and aspect ratio makes gaming fullscreen limited to only 2 resolutions, although this is common WUHD screens, I hoped DELL would do something about it since this has a Pro-level pricetag, so I recommend invest on a powerful GPU so you can always game full-res. A RTX3090 proved to be enough for most recent games, but requires some tweaking. - It was shipped in its retail box, no cardboard box around it, so not a lot of privacy there. - It's curved but barely, still not a huge downside for me, but probably an issue for folks wanting to buy multiple units to surround themselves with screen. Always an impeccable experience with Adorama, and great price!

DAVISON C.

2021-11-28T14:32:14

Rated 5 out of 5

Excellent monitor

Provides an excellent working monitor with abundant real estate. Text and images are clear and eye strain is minimal. Charging via Thunderbolt is an excellent quality of life function.

ZACHARY H.

2021-10-22T09:32:20

Rated 5 out of 5

Quite impressed with the monitor

I have been using it for about a month now and outside of figuring out how best to use it with my setup, everything has been great. Dell even updated the firmware to add full support for Mac?s. I currently use it with two laptops, a 2016 MacBook Pro and a Lenovo P1 Gen 3 running Fedora Linux. I also occasionally connect a desktop PC running Linux as well via one of the HDMI ports. Neither of my systems can run it at 60Hz, but hopefully in the future I can update my Mac to a newer model that can. The one design issue I have found is that the ethernet dongle ties to the current active output, I wish I could lock it to the thunderbolt port instead of having it follow when I switch to DP/HDMI.

CRAIG P.

2021-10-05T13:00:45

Rated 1 out of 5

Didn't work.

I didn't work. Is my review valuable?!

Timothy M.

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Dell U4021QW Specifications

General

General

Jump to...
  • Display Type

    LED-backlit LCD monitor / TFT active matrix

  • Diagonal Size

    39.7" (100.83cm)

  • Viewable Size

    39.7" (100.83cm)

  • Curved Screen

    Yes (2500R)

  • Built-in Devices

    USB 3.2 Gen 2/USB-C hub

  • Panel Type

    IPS

  • Aspect Ratio

    21:9

  • Native Resolution

    WUHD 5120 x 2160 (DisplayPort: 60 Hz, HDMI: 30 Hz)

  • Pixel Pitch

    0.1815 mm

  • Pixel Per Inch

    140

  • Brightness

    300 cd/sq. m

  • Contrast Ratio

    1000:1

  • Color Support

    1.07 billion colors

  • Response Time

    8 ms (gray-to-gray normal); 5 ms (gray-to-gray fast)

  • Horizontal Viewing Angle

    178

  • Vertical Viewing Angle

    178

  • Screen Coating

    Anti-glare 3H hardness

  • Backlight Technology

    LED backlight

  • Bezel Type

    Flat front

  • Features

    100% sRGB color gamut, 98% DCI-P3, 3-sided bezeless

Connectivity

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  • Interfaces

    2x HDMI (HDCP 2.2)
    DisplayPort (HDCP 2.2)
    Thunderbolt 3 / USB-C upstream (DisplayPort 1.4 mode / power up to 90W)
    USB-C 3.2 Gen 2 downstream (power up to 15W)
    USB upstream (Type B)
    4x USB 3.2 Gen 2
    USB 3.2 Gen 2 downstream with Battery Charging 1.2
    Audio line-out
    Network (RJ-45)

Mechanical

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  • Display Position Adjustments

    Height, swivel, tilt

  • Tilt Angle

    5/21

  • Swivel Angle

    60

Miscellaneous

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  • Features

    VESA interface support

  • Cables Included

    1x DisplayPort cable - DisplayPort to DisplayPort 6'
    1x USB 3.2 Gen 1 upstream cable - USB Type A to B - 6'
    1x HDMI cable - 6 '
    1x Thunderbolt 4 active cable - USB-C

  • Compliant Standards

    DisplayPort 1.4, HDCP 2.2

  • Voltage Required

    AC 120/230 V (50/60 Hz)

  • Power Consumption (On mode)

    240 W

  • Power Consumption Operational

    240 Watt

  • Power Consumption Stand by

    0.3 Watt

  • Power Consumption Sleep

    0.3 Watt

  • Power Consumption (Off Mode)

    0.3 Watt

Environmental Standards

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  • TCO Certified

    TCO Certified Displays 8

Environmental Parameters

Jump to...
  • Min Operating Temperature

    32 Degree F (0 Degree C)

  • Max Operating Temperature

    104 Degree F (40 Degree C)

  • Humidity Range Operating

    10 - 80% (non-condensing)

Dimensions & Weight

Jump to...
  • Dimensions (W x D x H)

    37.3 x 9.8 x 18" (94.74 x 24.89 x 45.72cm)

  • Weight

    With Stand: 30.4 lbs (13.78kg)
    Without Stand: 20.9 lbs (9.48kg)

About Dell UltraSharp U4021QW 39.7" 21:9 WUHD Curved IPS LED Monitor

FEATURED REVIEWS

Quite impressed with the monitor

By CRAIG P.

I have been using it for about a month now and outside of figuring out how best to use it with my setup, everything has been great. Dell even updated the firmware to add full support for Mac?s. I currently use it with two laptops, a 2016 MacBook Pro and a Lenovo P1 Gen 3 running Fedora Linux. I also occasionally connect a desktop PC running Linux as well via one of the HDMI ports. Neither of my systems can run it at 60Hz, but hopefully in the future I can update my Mac to a newer model that c...

View full Review

Great monitor and impeccable purchase experience with Adorama

By DAVISON C.

Great monitor and impeccable purchase experience with Adorama, super fast shipping. This monitor is incredible, I thought it not being HDR or OLED would be an issue for image quality, but I was wrong, the image is great. I have professional gear to calibrate monitors and this came nearly calibrated out of the box, and already with the latest firmware. It has so many connections in and out that are super handy. Resolution and aspect ratio is great for professional use and visual related wor...

View full Review

Give your visuals power

More screen to captivate you:
Stay on task with immersive productivity on the world's first 39.7-inch curved ultrawide WUHD 5K2K monitor.i With 35% more onscreen space than a 32-inch 4K 16:9 screen, you have room to view all of your work at once.

A view that draws you in:
The 2500R curved screen creates a wider field of view, minimizes reflection and offers near uniform visual focus, for a comfortable, panoramic, wrap-around view.

Unmatched clarity:
Across that additional screen space, you'll see fine, intricate details with ultra high 5120 x 2160 resolution and a 140 ppi pixel density.

Consistent, vibrant colors:
Expect consistent color and picture quality across a wide viewing angle, with IPS technology. See true-to-life color with an incredible color depth of 1.07 billion colors and wide color coverage across industry standards, including 100% sRGB, 100% Rec. 709 and 98% DCI-P3. DCI-P3 (which offers nearly 25% more coverage than sRGB), enables a wider range of colors and is quickly becoming the color standard for creating and viewing content.

All-encompassing sound:
Integrated dual 9W speakers deliver quality sound for an auditory experience that pulls you in even further.

Your productivity hub

Connect to productivity:
With Thunderbolt 3 and RJ45, this monitor serves as a productivity hub that delivers stable Ethernet and up to 90W of power delivery-all in a clutter-free setup.

Lightning speed:
Thunderbolt 3 delivers speeds of up to 40Gbpsi, creating one compact port that does it all-delivering the fastest and most versatile connection to any dock, display or data peripheral.

Extensive connectivity:
Easily connect to a variety of devices with extensive connectivity options, including Thunderbolt 3, DP1.4, HDMI and super speed USB 10Gbpsi. Plus, quick-access USB-C and super speed USB 10Gbpsi ports conveniently located at the front, enable fast connection to peripherals, such as storage devices and mobile phones, with up to 15W charging capability (via USB-C).

Enhanced manageability:
MAC Address pass-through, PXE Boot, and Wake-on-LAN are conveniently built in.

Multitask efficiently:
Effortlessly connect two PC sources to your monitor. Our intelligent Auto KVM feature detects the second connected PC and seamlessly switches controls over. View content from both PC sources with Picture-by-Picture (PbP) and Picture-in-Picture (PiP), and use KVM (keyboard, video and mouse) to control both PCs with a single keyboard and mouse.

Masterful design

Easy on the eyes:
Experience vibrant color that's easy on your eyes with ComfortView Pulsi, an always-on, built-in low blue light screen that reduces harmful blue light emissions while delivering excellent color performance.

Beauty meets function:
Crafted with a premium, platinum silver finish, this stylish monitor features a compact base and a hidden cable management design that runs the cables through the monitor riser for a clutter-free setup. Plus, you can navigate the menu and adjust screen settings with the easy-to-use joystick control.

Comfort is key:
Tilt, swivel and adjust the height of your monitor because you should be comfortable however and wherever you work.

Dell Display Manager

Productive at every level:
Easy Arrange allows you to easily tile multiple applications across one or more screens with 38 pre-set window partitions and the ability to personalize up to five windows, giving you improved multitasking abilities.

Seamless transitions:
The auto-restore feature remembers where you left off, so applications will go back to where you left them, even after you've unplugged.

More ways to manage:
Asset management reports allow IT managers to quickly capture and track monitor information as well as configure multiple monitors at once through a single setup.

The key to convenience:
Shortcut keys can save you even more time, letting you easily configure your display management settings so you can get to work faster.

Green thinking: for today and tomorrow

Environmental standards:
This monitor meets the latest regulatory and environmental standards such as EnergyStar, TCO and registered under Eleatic.

Eco-conscious packaging:
To reduce our manufacturing impact on the environment, this monitor is shipped Styrofoam-free and the paper-based packaging is made of at least 75% recycled cardboard.

Energy conservation:
Save energy when your monitor is not in use with Powernap, a feature that dims or puts your monitor to sleep when it's not in use.

Advancing sustainability:
Dell Technologies is committed to reducing environmental impact throughout the product lifecycle. Read more about our commitment to sustainability and our 2030 Social Impact goals here, and our product's carbon footprint here.

Connectivity Options

Ports & Slots:
1. Security lock slot, 2. Power connector, 3. HDMI port, 4. HDMI port, 5. DisplayPort in, 6. Audio line-out porta, 7. Thunderbolt 3 (90W)/DisplayPort, 8. USB upstream port, 9. Super speed USB 10 Gbps (USB 3.2 Gen 2 (4)), 10. RJ45, 11. USB-C downstream port, 12. Stand lock

Cables included:
Power cable, DisplayPort cable (DP to DP), Super speed USB 5 Gbps (USB 3.2 Gen1) Upstream Cable (Type-A to Type-B), HDMI cable, Thunderbolt 4 (USB-C) Active Cable

Peace of mind, guaranteed
Our products are engineered with care and precision, so we guarantee support and peace of mind.

Dell UltraSharp U4021QW 39.7" 21:9 WUHD Curved IPS LED Monitor Features

  • Give your visuals power
  • Your productivity hub
  • Masterful design
  • Dell Display Manager
  • Green thinking: for today and tomorrow