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DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver

DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
R37,704
The DELL UltraSharp U4021QW is a 39.7" curved LCD monitor with a 5120 x 2160 (5K2K) 4K DCI resolution and an IPS panel. Designed for wide-format productivity, it offers a 21:9 aspect ratio, 178° viewing angles and a typical brightness of 300 cd/m². The display includes integrated speakers, a built-i... Read More
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Stock Out Of StockNo Stock Code 340463 Brand DELL Model DELL-U4021QW Warranty 2 Years
CategoryComputer Monitors

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The DELL UltraSharp U4021QW is a 39.7" curved LCD monitor with a 5120 x 2160 (5K2K) 4K DCI resolution and an IPS panel. Designed for wide-format productivity, it offers a 21:9 aspect ratio, 178° viewing angles and a typical brightness of 300 cd/m². The display includes integrated speakers, a built-in USB hub with a USB-C downstream port, and supports VESA mounting and height adjustment in a silver finish.

Advantages

The ultra-wide 39.7" curved screen provides expansive horizontal workspace and consistent color reproduction across the IPS panel. High 5120 x 2160 resolution delivers detailed image clarity suitable for multitasking and content creation. Built-in connectivity and speakers simplify desk setup while VESA mount and adjustable height enable ergonomic placement.

Suitable for

  • Office productivity and spreadsheets
  • Video and photo editing requiring high resolution and color consistency
  • Multitasking with multiple application windows side-by-side
  • Creative professionals and designers

Key specifications

  • Display diagonal: 39.7"
  • Resolution: 5120 x 2160 (5K2K, 4K DCI)
  • Panel type: IPS, LCD
  • Aspect ratio: 21:9 (ultra-wide)
  • Response time: 8 ms
  • Brightness (typical): 300 cd/m²
  • Contrast ratio (typical): 1000:1
  • Pixel pitch: 0.181 x 0.181 mm
  • Screen shape: Curved
  • Built-in speakers: Yes
  • Built-in USB hub / USB-C downstream: Yes / 1 port
  • VESA mounting: Yes
  • Color: Silver
  • Energy efficiency (SDR): G; Energy consumption (SDR) per 1000 h: 41 kWh

How to use

Connect the monitor to a compatible computer using the provided video or USB-C cable and adjust the height and tilt for a comfortable viewing angle. Use the built-in USB hub to attach peripherals and route audio through the integrated speakers if desired. Configure display settings in your operating system to set the native 5120 x 2160 resolution and arrange multi-window layouts to take advantage of the ultra-wide workspace.

Recommendations

For accurate color-critical work, allow the monitor to warm up for a short period and calibrate it with a hardware calibrator if precise color matching is required. Position the curved screen at an appropriate viewing distance to benefit from the immersive, distortion-minimised field of view.
Key Highlights
  • Office productivity and spreadsheets
  • Video and photo editing requiring high resolution and color consistency
  • Multitasking with multiple application windows side-by-side
  • Creative professionals and designers
  • Display diagonal: 39.7"
  • Resolution: 5120 x 2160 (5K2K, 4K DCI)
  • Panel type: IPS, LCD
  • Aspect ratio: 21:9 (ultra-wide)
  • Response time: 8 ms
  • Brightness (typical): 300 cd/m²
  • Contrast ratio (typical): 1000:1
  • Pixel pitch: 0.181 x 0.181 mm
  • Screen shape: Curved
  • Built-in speakers: Yes
  • Built-in USB hub / USB-C downstream: Yes / 1 port
  • VESA mounting: Yes
  • Color: Silver
  • Energy efficiency (SDR): G; Energy consumption (SDR) per 1000 h: 41 kWh
Specifications
AC input frequency
50 - 60
AC input voltage
100 - 240
Adjustable height (max)
120 mm
AMD FreeSync
No
Anti-glare screen
Yes
Audio input
No
Backlight type
LED
Bezel width (bottom)
15.8 mm
Bezel width (side)
11.3 mm
Bezel width (top)
11.3 mm
Built-in camera
No
Built-in speaker(s)
Yes
Built-in USB hub
Yes
Cable lock slot
Yes
Carbon emissions, end-of-life (kg of CO2e)
6
Carbon emissions, energy usage (kg of CO2e)
377
Carbon emissions, logistics (kg of CO2e)
112
Carbon emissions, manufacturing (kg of CO2e)
430
Colour gamut
98 %
Colour gamut standard
DCI-P3
Contrast ratio (typical)
1000:1
Depth (with stand)
248 mm
Depth (without stand)
59.6 mm
Display brightness (typical)
300 cd/m²
Display diagonal
39.7 "
Display number of colours
1.073 billion colours
Display resolution
5120 x 2160
Display technology
LCD
DisplayPort version
1.4
DisplayPorts quantity
1
DVI port
No
Energy consumption (SDR) per 1000 hours
41 kWh
Energy efficiency class (HDR)
Not available
Energy efficiency class (SDR)
G
Energy efficiency scale
A to G
Ethernet LAN (RJ-45) ports
0
European Product Registry for Energy Labelling (EPREL) code
390236
Feet colour
Silver
Front bezel colour
Black
Harmonized System (HS) code
85285210
HD type
4K DCI
HDMI
Yes
HDMI ports quantity
2
HDMI version
2.0
Headphone connectivity
3.5 mm
Headphone out
Yes
Headphone outputs
1
Height (with stand)
577.3 mm
Height (without stand)
419.1 mm
Height adjustment
Yes
High Dynamic Range (HDR) supported
No
Horizontal scan range
27 - 133.286
Input current
2.8
Market positioning
Graphics design
Maximum refresh rate
60 Hz
Native aspect ratio
21:9
Number of speakers
2
Number of upstream ports
1
Number of USB Type-B upstream ports quantity
1
NVIDIA G-SYNC
No
Operating relative humidity (H-H)
10 - 80
Operating temperature (T-T)
0 - 40
Package weight
21600 g
Panel mounting interface
100 x 100
Panel type
IPS
Pivot
No
Pixel density
140 ppi
Pixel pitch
0.181 x 0.181
Power consumption (max)
240 W
Power consumption (off)
0.3 W
Power consumption (PowerSave)
44.81 W
Power consumption (standby)
0.3 W
Power consumption (typical)
41.3 W
Power supply type
Internal
Product colour
Silver
Response time
8 ms
Response time (fast)
5 ms
RJ-45 ports quantity
1
RMS rated power
18 W
Screen curvature rating
2500R
Screen shape
Curved
Storage relative humidity (H-H)
5 - 90
Storage temperature (T-T)
-20 - 60
Supported graphics resolutions
640 x 480 (VGA), 720 x 400, 800 x 600 (SVGA), 1024 x 768 (XGA), 1152 x 864 (XGA+), 1280 x 800 (WXGA), 1600 x 1200 (UXGA), 1680 x 1050 (WSXGA+), 1920 x 1080 (HD 1080), 2048 x 1152, 2560 x 1080, 3840 x 2160, 4096 x 2160, 5120 x 2160
Supported video modes
480p, 720p, 1080i, 1080p
Swivel angle range
-30 - 30
Swivelling
Yes
Thunderbolt 3 ports quantity
1
Tilt adjustment
Yes
Tilt angle range
-5 - 21
Total carbon emissions, standard deviation (kg of CO2e)
149
Total carbon emissions, w/o use phase (kg of CO2e)
549
Total carbon footprint (kg of CO2e)
926
Touchscreen
No
USB Power Delivery up to
90 W
USB Type-A downstream ports quantity
4
USB Type-C downstream ports quantity
1
USB upstream port type
USB Type-B
Vertical scan range
24 - 86
VESA mounting
Yes
VGA (D-Sub) ports quantity
0
Viewable size diagonal
1008.59 mm
Viewable size, horizontal
929.28 mm
Viewable size, vertical
392.04 mm
Viewing angle, horizontal
178 °
Viewing angle, vertical
178 °
Weight (with stand)
13800 g
Weight (without stand)
9500 g
Wi-Fi
No
Width (with stand)
946.6 mm
Width (without stand)
946.6 mm

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Price history over the last 6 months
DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7 inch) 5120 x 2160 pixels 4K DCI LCD Silver
Current
R37,704
Lowest
R23,104
Highest
R39,432
Change 24H
+R12,496   +50%
Week
+R14,111   +60%
Month
+R14,531   +63%

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Expert reviews

Independent reviews by tech media

aecmag.com

“The way we look at our computing hardware has changed over the last 15 months. After all, many of us now find ourselves more regularly interacting with others through a screen, rather than face to face - plus we're stuck working in our own homes.”

Read the full review at aecmag.com →
develop3d.com

Verdict: The Dell U4021QW is a pretty useful display. Whether you're looking for a replacement for a single or dual-monitor set-up, or perhaps replicating it at home, then it's got pretty much everything you need in terms of aesthetics. In other words, it looks pre...

Read the full review at develop3d.com →
techradar.comJohn
8/10

Verdict: The Dell U4021QW is a curved ultrawide UHD display that brings a premium look and visual performance to any home or office space. Several ports offer plenty of input channels and multiple applications can be easily tiled, making multitasking a snap. It's...

Pros
  • Gorgeous display
  • Lots of ports
  • Feature rich
  • Built in speakers
Cons
  • Plastic construction
  • Expensive
  • 60Hz refresh rate
Read the full review at techradar.com →

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