Dell UltraSharp U4021QW, 40"

Name: Dell UltraSharp U4021QW, 40"
Brand: Dell
SKU: 681787
Price: 1352.19 EUR
Availability: InStock

Picture may differ from actual product, there can be accessories and parts not supplied with the actual product.

ID: 681787 Product code: 210-AYJF

Can be ordered 1 units Availability: 14 days after order approval

Warranty: 3 years

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Ready for dispatch

19.03.2026

starting from 0 €

Delivery options

Receiving goods at the Dateks office

0.00 €
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Within 1-2 working days

4.99 €

Main product parameters All parameters

Curved: Ir
Panel Type: IPS
Refresh rate: 60 Hz
Response time: 8ms
Contrast ratio: 1000:1
Brightness: 300cd/m2
Size: 39.7"
Resolution: WUHD 5120x2160

Description

The monitor Dell UltraSharp U4021QW, 40", Curved with WUHD 5120x2160 resolution is designed for professionals who appreciate maximum precision in detail. It provides high-quality color calibration, well-considered connectivity solutions, and ergonomic design, creating ideal conditions for working with visual projects.

IPS technology ensures more accurate color representation and stable image when viewed from the side. Compared to TN and VA, it changes brightness and contrast less with viewing angle, making the displayed data visually more reliable and technically more accurate.

The Flicker-Free technology reduces or completely eliminates flickering in lighting, ensuring a stable and uniform image. The reduced visual vibration lessens eye strain and improves comfort during prolonged use, especially when using the monitor at a lower brightness level.

The Swivel mechanism allows for changing the horizontal angle of the screen without moving the entire structure. This facilitates workspace adjustment, improves visibility from different points and helps adjust the monitor for various usage scenarios, including configurations for multiple users or multiple monitors.

The Tilt function ensures flexible adjustment of the panel's vertical tilt, allowing for precise adaptation of the screen to the working position. This reduces the risk of discomfort during prolonged use, maintains an optimal viewing angle, and helps avoid image distortion in various lighting conditions.

The USB-C connection combines image, sound, data and power transmission into one cable, reducing workplace load and speeding up device connectivity. It is compatible with many modern laptops and provides a stable signal, making monitor usage more convenient and technically effective.

Warranty

Dell provides this model with a 3 year warranty at all certified service centres.

All parameters

Model : UltraSharp U4021QW

Display characteristics

AMD FreeSync : Nav

Curved : Ir

NVIDIA G-SYNC : Nav

Panel Type IPS

Teh monitor panel is the main feature of the visible part of the screen or the technology where the display of the colour dots (pixels) is implemented.

TN is the standard technology with average contract, brightness and colour compliance indices.

IPS is the matrix with high colour compliance and good response speed, therefore it is well suited for graphics tasks and photo editing. IPS matrix provide an excellent viewing angle maintaining the colours and contrast from almost any angle.

VA matrix ensures superior colour compliance, however, the response time of this matrix is lagging behind that of the IPS and TN; the viewing angle is somewhere between both these technologies.

The TN type monitor is fully sufficient for an average user. If you have more money available the VA or IPS can be chosen.

Refresh rate : 60 Hz

Touchscreen : NO

VESA DisplayHDR : Nav

Response time 8ms

The response time of the monitor screen determines how fast the monitor will display moving images (films, games, animations, etc.). The response time is measured in miliseconds. The less the response time the better the ability of the monitor to display moving images.
www.dateks.lv recommends to buy monitors with 5ms response time or lower.

Contrast ratio 1000:1

Ekrāna kontrasts nosaka attēla asumu. Tā ir atšķirība starp vistumšāko (pilnīgi melnu) un visgaišāko (pilnīgi baltu) pikseli. Jo lielāks kontrasts, jo skaidrāk salasāms teksts uz ekrāna, kontrasts arī nosaka, cik izteiksmīgas līnijas būs redzamas monitora attēlā.

Augsts kontrasts ir nozīmīgs faktors izvēloties monitoru biroja, vai mācību vajadzībām, kad lielākoties tiek strādāts ar tekstuālu informāciju.

Mājas vajadzībām svarīgāks izvēles rādītājs ir gaišums un attēla reakcijas laiks. Kontrastu labāk novērtēt tumšā istabā.
Lielākais LCD monitoru trūkums ir tas, ka samazinot attēla spilgtumu, kontrasts var pazust.

Brightness 300cd/m2

Monitora gaišums ir attēla redzamības rādītājs, kas nosaka, cik labi saskatāms ir attēls pie spēcīga ārējā apgaismojuma (saules gaisma, gaiša telpa, utt.). LCD monitoru gaišums tiek mērīts kandelās uz kvadrātmetru (Cd/m2).
Izvēloties monitoru jāņem vērā - jo lielāks gaišuma rādītājs, jo labāka attēla redzamība.

Ikdienas vajadzībām Dateks.lv iesaka iegādāties monitoru ar gaišumu, ne mazāku par 250 cd/m2.

Basic information

Application : Creative

Aspect ratio : 21:9

Color : Black, Silver

Size 39.7"

The size of the monitor screen is measured in inches across the diagonal. The screen size must be proportionate to the resolution of the screen for achieving the maximum utilisation of the desktop and details of the image.

Mainly two forms of LCD monitors are available: with standard width and height proportion 4:3 or the widescreen proportion 16:9 or 16:10. A widescreen monitor is wider and its resolution is higher than that of the monitors with standard proportion.

The bigger the monitor size the higher resolution usually is supported. Possibilities to increase the resolution of the screen usually depend on the size and possibilities of the monitor and the type of the video card.

Resolution WUHD 5120x2160

The resolution of the monitor screen determines the number of colour dots (pixels) a monitor can display. It refers to the clarity of the text and images displayed on the screen. The higher the resolution the sharper the items look.

The applied resolution depends on the resolution supported by the monitor. LCD monitors, including the screens of laptop computers usually work best if their local resolution has been set. The setting of this resolution for the monitor is not mandatory, but usually it is recommended to set it for ensuring the highest possible sharpness of texts and images. The bigger the monitor size the higher resolution usually is supported.

Possibilities to increase the resolution of the screen usually depend on the size and possibilities of the monitor and the type of the video card.
• 19 inches screen (standard proportions): 1280x1024 pixels
• 20 inches screen (standard proportions): 1600x1200 pixels
• 22 inches screen (widescreen): 1680x1050 pixels
• 24 inches screen (widescreen): 1900x1200 pixels

Functionality

Flicker-free : Ir

Height adjustment : Ir

Pivot : Nav

Swivel : And

Tilt : YES

VESA wall mount : Is (size not specified)

Ports and equipment

D-SUB Nav

D-SUB is the classic (analogous) monitor connection plug. This standard is gradually disappearing from the market giving the place to the higher quality HDMI or DisplayPort (digital) plugs.

If the resolution of the monitor is FullHD or below the average user will experience no problems with this connection. Those who want to achieve higher image quality and resolution should look for the monitor with the DisplayPort or HDMI connection slot.

DisplayPort 1

DisplayPort is the digital connection for transmitting the image via a single wire at a high quality level. Contrary to the HDMI, this connection allows to connect several external monitors to the computer via a single connector.

Prior to buying the monitor with the DisplayPort you should verify whether your computer has the DisplayPort plug available!

DVI Nav

DVI is a digital standard and ensures high image quality, however, thanks to the big size of the plug and the inability of the standard to develop further due to a few technical restrictions this type of connection is gradually losing its popularity to modern HDMI and DisplayPort standards.

DVI is compatible with HDMI and transitions of both directions are available.

DVI is not compatible with DisplayPort, however, there are DualMode DisplayPort connectors which contains the HDMI/DVI signal, and in the relevant direction DisplayPort -> DVI can transmit an image.

If the monitor resolution exceeds 1920px in any direction a graphics card with the DVI-D Dual Link support and the relevant quality cable will be required.

Before buying a monitor you should verify whether your graphics card has the corresponding connection slot!

HDMI port 2

HDMI is the digital high quality image transmission standard that allows to connect the monitor to the computer via a thin cable by using an elegant small-size connector. HDMI is compatible with DVI if the relevant transition or cable is used.

Speakers Nav

Some monitors may have built-in speakers that quite often allow to give up external speakers thus freeing a space on the desk and saving money. The sound quality of built-in speakers is quite moderate and therefore we recommend to use this possibility just for infrequent needs.

For enjoying music, movies and games we recommend buying the corresponding quality and capacity speakers.

USB Hub : YES

USB-C Power Delivery : 90W

USB-C video input : 1

More detailed specification

Additional information in manufacturers website Dell UltraSharp U4021QW, 40"

Brand - DELL
BrandPartCode - DELL-U4021QW
Carbon footprint - Carbon emissions, end-of-life (kg of CO2e) - 6.23
Carbon footprint - Carbon emissions, energy usage (kg of CO2e) - 377
Carbon footprint - Carbon emissions, logistics (kg of CO2e) - 112
Carbon footprint - Carbon emissions, manufacturing (kg of CO2e) - 430.6
Carbon footprint - PAIA version - 1.2.13, 2021
Carbon footprint - Total carbon emissions, standard deviation (kg of CO2e) - 149
Carbon footprint - Total carbon footprint (kg of CO2e) - 926
Category - Computer Monitors
Category_1 - Monitors and TV
Category_2 - LED Monitors 31 inches and up
Design - Feet colour - Silver
Design - Front bezel colour - Black
Design - Market positioning - Graphics design
Design - Product colour - Silver
Display - Anti-glare screen - Yes
Display - Backlight type - LED
Display - Colour gamut - 98%
Display - Colour gamut standard - DCI-P3
Display - Contrast ratio (typical) - 1000:1
Display - Display brightness (typical) - 300 cd/m²
Display - Display diagonal - 100.8 cm (39.7")
Display - Display number of colours - 1.073 billion colours
Display - Display resolution - 5120 x 2160 pixels
Display - Display technology - LCD
Display - HD type - 4K DCI
Display - High Dynamic Range (HDR) supported - No
Display - Horizontal scan range - 27 - 133.286 kHz
Display - Maximum refresh rate - 60 Hz
Display - Native aspect ratio - 21:9
Display - Panel type - IPS
Display - Pixel density - 140 ppi
Display - Pixel pitch - 0.1815 x 0.1815 mm
Display - Response time - 8 ms
Display - Response time (fast) - 5 ms
Display - Screen curvature rating - 2500R
Display - Screen shape - Curved
Display - 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
Display - Supported video modes - 480p, 720p, 1080i, 1080p
Display - Touchscreen - No
Display - Vertical scan range - 24 - 86 Hz
Display - Viewable size, horizontal - 92.9 cm
Display - Viewable size, vertical - 39.2 cm
Display - Viewable size diagonal - 100.9 cm
Display - Viewing angle, horizontal - 178°
Display - Viewing angle, vertical - 178°
EAN_code - 5397184409633
Ergonomics - Adjustable height (max) - 12 cm
Ergonomics - Cable lock slot - Yes
Ergonomics - Height adjustment - Yes
Ergonomics - Panel mounting interface - 100 x 100 mm
Ergonomics - Pivot - No
Ergonomics - Swivel angle range - -30 - 30°
Ergonomics - Swivelling - Yes
Ergonomics - Tilt adjustment - Yes
Ergonomics - Tilt angle range - -5 - 21°
Ergonomics - VESA mounting - Yes
GTIN - 0884116381365
GTIN - 884116381365
GTIN - 5397184409633
GTIN - 5704174822899
GTIN - 5704174822905
Logistics data - Harmonized System (HS) code - 85285210
LongDesc - Redefine productivity on this revolutionary 40” curved WUHD 5K2K monitor that delivers exceptional color and clarity.
LongProductName - 100.8cm (39.7") WUHD 5120 x 2160 LED IPS, 21:9, 300cd/m², 1.073B, 8ms, 178°/178°, 1000:1
LongSummaryDescription - DELL UltraSharp U4021QW. Display diagonal: 100.8 cm (39.7"), Display resolution: 5120 x 2160 pixels, HD type: 4K DCI, Display technology: LCD, Response time: 8 ms, Native aspect ratio: 21:9, Viewing angle, horizontal: 178°, Viewing angle, vertical: 178°. Built-in speaker(s). Built-in USB hub. VESA mounting, Height adjustment. Product colour: Silver
Manufacturer - Dell
Manufacturer_code - DELL-U4021QW
Multimedia - Built-in camera - No
Multimedia - Built-in speaker(s) - Yes
Multimedia - Number of speakers - 2
Multimedia - RMS rated power - 18 W
Name - DELL 40 LED U4021QW
Network - Wi-Fi - No
Operational conditions - Operating relative humidity (H-H) - 10 - 80%
Operational conditions - Operating temperature (T-T) - 0 - 40 °C
Operational conditions - Storage relative humidity (H-H) - 5 - 90%
Operational conditions - Storage temperature (T-T) - -20 - 60 °C
Other features - RJ-45 ports quantity - 1
Packaging data - Package weight - 21.6 kg
Performance - AMD FreeSync - No
Performance - NVIDIA G-SYNC - No
Ports & interfaces - Audio input - No
Ports & interfaces - Built-in USB hub - Yes
Ports & interfaces - DisplayPorts quantity - 1
Ports & interfaces - DisplayPort version - 1.4
Ports & interfaces - DVI port - No
Ports & interfaces - HDMI - Yes
Ports & interfaces - HDMI ports quantity - 2
Ports & interfaces - HDMI version - 2.0
Ports & interfaces - Headphone connectivity - 3.5 mm
Ports & interfaces - Headphone out - Yes
Ports & interfaces - Headphone outputs - 1
Ports & interfaces - Number of upstream ports - 1
Ports & interfaces - Number of USB Type-B upstream ports quantity - 1
Ports & interfaces - Thunderbolt 3 ports quantity - 1
Ports & interfaces - USB Power Delivery up to - 90 W
Ports & interfaces - USB Type-A downstream ports quantity - 4
Ports & interfaces - USB Type-C downstream ports quantity - 1
Ports & interfaces - USB upstream port type - USB Type-B
Power - AC input frequency - 50 - 60 Hz
Power - AC input voltage - 100 - 240 V
Power - Energy consumption (SDR) per 1000 hours - 41 kWh
Power - Energy efficiency class (HDR) - Not available
Power - Energy efficiency class (SDR) - G
Power - Energy efficiency scale - A to G
Power - European Product Registry for Energy Labelling (EPREL) code - 390236
Power - Input current - 2.8 A
Power - Power consumption (max) - 240 W
Power - Power consumption (off) - 0.3 W
Power - Power consumption (PowerSave) - 44.81 W
Power - Power consumption (standby) - 0.3 W
Power - Power consumption (typical) - 41.3 W
Power - Power supply type - Internal
ProductName - U4021QW
ShortSummaryDescription - DELL UltraSharp U4021QW, 100.8 cm (39.7"), 5120 x 2160 pixels, 4K DCI, LCD, 8 ms, Silver
Title - DELL UltraSharp U4021QW computer monitor 100.8 cm (39.7") 5120 x 2160 pixels 4K DCI LCD Silver
URL - https://www.dell.com/en-uk/shop/
WarrantyInfo - 3 Years Base Adv Ex
Weight - 21,65
Weight & dimensions - Bezel width (bottom) - 1.58 cm
Weight & dimensions - Bezel width (side) - 1.13 cm
Weight & dimensions - Bezel width (top) - 1.13 cm
Weight & dimensions - Depth (without stand) - 59.6 mm
Weight & dimensions - Depth (with stand) - 248 mm
Weight & dimensions - Height (without stand) - 419.1 mm
Weight & dimensions - Height (with stand) - 577.3 mm
Weight & dimensions - Weight (without stand) - 9.5 kg
Weight & dimensions - Weight (with stand) - 13.8 kg
Weight & dimensions - Width (without stand) - 946.6 mm
Weight & dimensions - Width (with stand) - 946.6 mm