Highlights

• Model: DELL U4021QW
• Screen: LED-backlit LCD monitor / TFT active matrix
• LCD Display Technology: IPS
• Resolution: WUHD 5120 x 2160 (DisplayPort: 60 Hz, HDMI: 30 Hz)
• Aspect Ratio: 21:9
• Brightness: 300 cd/m²
• Viewing Angle: 178 degrees
• Coataing: Anti-glareAnti-glare 3H hardness
• Dynamic Contrast Ratio: 1000:1
• Response Time: 8 ms (grey-to-grey normal); 5 ms (grey-to-grey fast)
• Connection Type: 2 x 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), 4 x USB 3.2 Gen 2, USB 3.2 Gen 2 downstream with Battery Charging 1.2, Audio line-out , Network (RJ-45)
• 3 Years Dell Onsite Service Warranty

Product Description

Give your visuals power

More screen to captivate you: Stay on task with immersive productivity on the world’s first 40-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 Ethernetⁱ and up to 90W of power deliveryⁱ—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 fastestⁱ and most versatile connection to any dock, displayⁱ 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-throughⁱ, 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 Plusⁱ, 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.ⁱ

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.

Expanded compatibility: With support for multiple operating systemsⁱ, Dell Display Manager helps you stay productive however you work.

Green thinking: for today and tomorrow

Environmental standards: This monitor meets the latest regulatory and environmental standards such as EnergyStar^®, TCO Certified and registered under EPEAT^®i.

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 PowerNapⁱ, 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, and our product’s carbon footprint.

Connectivity Options

Ports & Slots:
1. Security lock slot | 2. Power connector | 3. HDMI port | 4. HDMI port | 5. DisplayPort in | 6. Audio line-out portⁱ | 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

General

Display Type

LED-backlit LCD monitor / TFT active matrix

Energy Class

Class G

Diagonal Size

39.7"

Viewable Size

39.7"

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/m²

Contrast Ratio

1000:1

Colour Support

1.07 billion colours

Response Time

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

Horizontal Viewing Angle

178

Vertical Viewing Angle

178

Screen Coating

Anti-glare 3H hardness

Backlight Technology

LED backlight

Features

100% sRGB colour gamut, Factory Calibration Report, 98% DCI-P3, Dell Easy Arrange, 3-sided bezeless, 8-bit + FRC Colour Depth, Dell ComfortView Plus

Dimensions (WxDxH)

94.66 cm x 24.8 cm x 45.78 cm - with stand

Weight

9.5 Kg

Connectivity

Interfaces

• 2 x 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)
• 4 x USB 3.2 Gen 2
• USB 3.2 Gen 2 downstream with Battery Charging 1.2
• Audio line-out
• Network (RJ-45)

Mechanical

Display Position Adjustments

Height, swivel, tilt

Tilt Angle

5/21

Swivel Angle

60

Miscellaneous

Features

VESA interface support

Cables Included

• 1 x DisplayPort cable - DisplayPort to DisplayPort - 1.8 m
• 1 x USB 3.2 Gen 1 upstream cable - USB Type A to B - 1.8 m
• 1 x HDMI cable - 1.8 m
• 1 x Thunderbolt 4 active cable - USB-C

Compliant Standards

DisplayPort 1.4, HDCP 2.2

Power

Input Voltage

AC 120/230 V (50/60 Hz)

Power Consumption (On mode)

41.3 W

Power Consumption SDR (On mode)

41.3 kWh/1000h

Software / System Requirements

Included Software

Dell Display Manager

Dimensions & Weight

Dimensions & Weight Details

• With stand - width: 94.66 cm - depth: 24.8 cm - height: 45.78 cm - weight: 14.4 kg
• Without stand - weight: 9.5 kg

Dimensions & Weight (Shipping)

Shipping Weight

21.6 kg

What's in the Box

•  1 x Dell U4021QW 40" 5K WUHD UltraSharp USB-C (5120 x 2160) 5MS IPS LED Monitor
• 1 x Free Exclusive Mystery Gift Pack ​

Warranty

• 3 Years Local Manufacturer Warranty