Dell UltraSharp U4021QW 39.7" 5K2K WUHD Curved Screen LED LCD Monitor

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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. 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 40Gbps, 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 10Gbps. 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 Plus, 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.



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  • Manufacturer

    Dell Technologies

  • Manufacturer Part Number


  • Manufacturer Website Address

  • Brand Name


  • Product Line


  • Product Model


  • Manufacturer Warranty

    3YR Advanced Exchange Service

  • Number of Screens


  • Screen Size Class


  • Viewable Screen Size


  • Screen Mode

    5K2K WUHD

  • Panel Technology

    In-plane Switching (IPS) Technology

  • Response Time

    5 ms GTG (Fast)

  • Aspect Ratio


  • Pixel Pitch

    7.1 mil

  • Horizontal Viewing Angle


  • Vertical Viewing Angle


  • Backlight Technology


  • HDCP Supported


  • Features

    Anti-glare, Cable Management, ComfortView Plus, Picture by Picture,Picture in Picture, PowerNap, sRGB, Wide Viewing Angle,3H Surface Hardness, Flicker-free, Low Blue Light,Security Lock, Stand Lock

  • Curved Screen


Stand Adjustments

Stand Adjustments: Height Stand Adjustments: Swivel Stand Adjustments: Tilt Adjustable Stand Height: Yes

  • Maximum Resolution

    5120 x 2160

  • Standard Refresh Rate

    60 Hz

  • Color Supported

    1.07 Billion Colors

  • Native Contrast Ratio


  • Brightness

    300 Nit

  • Color Gamut

    100% Rec. 709

  • Color Gamut

    98% DCI-P3

  • Color Gamut

    100% sRGB

  • Number of Speakers


  • Speakers


  • Network (RJ-45)


  • HDMI


  • USB


  • DisplayPort


  • Thunderbolt


  • USB Type-C


  • Number of HDMI Inputs


  • Number of USB Ports


  • Number of USB Type-B Upstream Ports


  • Number of DisplayPorts


  • Total Number of USB Type-C Ports


  • Built-in Devices

    USB Hub

  • Operating Power Consumption

    240 W

  • Standby Power Consumption

    300 mW

  • Off-Mode Power Consumption

    300 mW

  • VESA Mount Compatible


  • Color

    Black, Silver

  • Height with Stand


  • Width with Stand


  • Depth with Stand


  • Weight (Approximate)

    20.90 lb

  • Weight with Stand (Approximate)

    31.75 lb

  • Package Contents

    UltraSharp U4021QW Widescreen LCD Monitor, Power Cable, 1 x DisplayPort Cable - DisplayPort to DisplayPort - 6 ft, 1 x USB 3.2 Gen 1 Upstream Cable - USB Type A to B - 6 ft, 1 x HDMI Cable - 6 ft, 1 x Thunderbolt 4 Active Cable - USB-C

  • Energy Star


  • Environmentally Friendly


  • Environmental Certification

    ENERGY STAR 8.0, TCO Certified Displays, EPEAT Gold

  • TCO Certified


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