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Dell UltraSharp U4021QW 39.7" 5K2K WUHD Curved Screen LED LCD Monitor - 21:9 - 40" In-plane Switching (IPS) Technology - 5120 x 2160 - 1.07 Billion Colors - 300 Nit - 5 ms - 60 Hz Refresh Rate

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Dell UltraSharp U4021QW 39.7" 5K2K WUHD Curved Screen LED LCD Monitor - 21:9 - Black, Silver - 40" Class - In-plane Switching (IPS) Technology - 5120 x 2160 - 1.07 Billion Colors - 300 Nit - 5 ms - 60 Hz Refresh Rate - HDMI - DisplayPort - USB Hub

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.

  • LCD Monitor offers maximum productivity with added dependability
  • USB Type-C offers a more refined structure and safer to use connectivity
  • 39.7" viewable screen size provides a lively viewing experience
  • 5 ms GTG (Fast) response time makes it excellent for latest action films, sports or gaming
  • Furnishes captivating visuals with 300 Nit brightness levels
  • 5K2K WUHD screen mode provides s stunning display for your viewing pleasure
  • LED backlight technology provides for industry-leading low power consumption and less hazardous materials
  • 5120 x 2160 maximum resolution for a vivid, crystal clear display with added productivity
  • 60 Hz standard refresh rate reduces blur to ensure maximum efficiency
  • 21:9 aspect ratio provides the best display for video recorded in the CinemaScope format
Built-in Devices
Built-in Devices USB Hub
Speakers Yes
Number of Speakers 2
Power Description
Operating Power Consumption 240 W
Standby Power Consumption 300 mW
Off-Mode Power Consumption 300 mW
Physical Characteristics
Weight (Approximate) 20.90 lb
Weight with Stand (Approximate) 31.75 lb
VESA Mount Compatible Yes
Height with Stand 18"
Width with Stand 37.30"
Depth with Stand 9.80"
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
Environmentally Friendly Yes
Environmental Certification ENERGY STAR 8.0
TCO Certified Displays
Energy Star Yes
TCO Certified Yes
General Information
Product Type LCD Monitor
Manufacturer Part Number DELL-U4021QWA
Manufacturer Website Address
Manufacturer Dell Technologies
Product Model U4021QW
Product Name UltraSharp U4021QW Widescreen LCD Monitor
Product Line UltraSharp
Brand Name Dell
Network (RJ-45) Yes
Number of USB Ports 6
DisplayPort Yes
Number of HDMI Inputs 2
Thunderbolt Yes
Number of DisplayPorts 1
USB Type-C Yes
Number of USB Type-B Upstream Ports 1
Brightness 300 Nit
300 Nit
Color Supported 1.07 Billion Colors
Maximum Resolution 5120 x 2160
Standard Refresh Rate 60 Hz
Native Contrast Ratio 1,000:1
Color Gamut 100% Rec. 709
98% DCI-P3
100% sRGB
98% DCI-P3
100% sRGB
100% Rec. 709
Technical Information
Aspect Ratio 21:9
Pixel Pitch 7.1 mil
Response Time 5 ms GTG (Fast)
5 ms GTG (Fast)
Features Cable Management
Wide Viewing Angle
Stand Lock
Picture in Picture
Picture by Picture
Low Blue Light
ComfortView Plus
Security Lock
3H Surface Hardness
Viewable Screen Size 39.7"
Screen Mode 5K2K WUHD
Number of Screens 1
HDCP Supported Yes
Horizontal Viewing Angle 178°
Vertical Viewing Angle 178°
Backlight Technology LED
Panel Technology In-plane Switching (IPS) Technology
Curved Screen Yes
Adjustable Stand Height Yes
Screen Size Class 40"
Stand Adjustments Height

This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive hard. For more information, go to

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