Dell UltraSharp 52 Thunderbolt Hub Monitor - U5226KW

Unlock unparalleled productivity with this 6K ultrawide monitor designed for seamless multitasking, superior visual clarity, and all-day eye comfort.

EU Energy Label
Diagonal Size

51.5"

Resolution / Refresh Rate

6144 x 2560 at 120Hz

Panel Technology

In-plane Switching (IPS) Black Technology

Adjustability

Height

Tilt

Slant

Swivel

Color Gamut

99% DCI-P3 (CIE 1976)

100% sRGB (CIE 1931)

100% BT.709 (CIE 1931)

99% Display P3

Ports

2 HDMI port/s (HDCP 2.2) (Supports up to 6144 x 2560, 120 Hz, VRR, , as specified in HDMI 2.1 (FRL))

2 DisplayPort 1.4 (HDCP 2.2) port/s

4 USB Type-A 10Gbps downstream port/s

3 USB-C 10Gbps upstream port/s

1 Thunderbolt 4 40Gbps upstream port/s (DisplayPort 1.4 Alt Mode, Power Delivery up to 140 W EPR)

1 RJ45 Ethernet port/s, 2.5GbE

1 USB Type-A 10Gbps downstream port/s with Battery Charging 1.2

2 USB-C 10Gbps downstream port/s, Power Delivery up to 27 W

World's first 52-inch 6K monitor¹

Revolutionise your workspace by replacing a multiple monitor setup with an ultrawide monitor, available exclusively at Dell.

Enjoy seamless multitasking, superior visual clarity, and all day eye comfort while reducing desk clutter.

Expand your view

Experience breathtaking clarity on a curved screen with a cinematic 21:9 aspect ratio, 129 pixels per inch, and IPS Black technology for exceptional detail and deeper contrast.

21:9

aspect ratio

129

pixels per inch

IPS Black

2000:1 contrast ratio

World's best eye comfort²

This monitor is TÜV 5-star certified for eye comfort, featuring category one hardware low blue light certification.

Reduces blue light

The world’s first monitor to achieve TÜV category one hardware low blue light certification³, reducing harmful blue light emissions to ≤20% for all day eye comfort without sacrificing colour accuracy. This is up to 60% less exposure than competitors³.

Adapts to your environment

A built-in Ambient Light Sensor intelligently adjusts brightness and colour temperature to suit your surroundings, delivering consistent comfort day or night.

Smoother visual experience

Enjoy less flicker and seamless scrolling with a 120Hz refresh rate, creating smoother motion.

Low reflectance panel

The low reflectance panel reduces glare from outside light sources and improves screen contrast.

Exceptional contrast and accurate colour

IPS Black panel technology delivers a 2000:1 contrast ratio for deeper blacks, while 99% DCI-P3 and Display P3 colour coverage with Delta E <1.5 ensure vivid, precise colour.

Streamline your productivity

Seamless multitasking

Multitask effortlessly on the world’s first monitor to implement Picture-by-Picture (PbP) with Screen Partition³. Connect to two PCs simultaneously and display content across four unique partitions. No external hardware needed.

Connect up to four PCs

Picture-by-Picture (PbP) lets you view content from multiple PCs on one screen. The KVM (Keyboard, Video, Mouse) and Auto KVM features empower you to control them with a single keyboard and mouse.

Lightning-fast efficiency

With a variety of connectivity options, easily connect your peripherals to optimise your workspace and boost productivity.

Thunderbolt 4

Power your devices with a single cable connection with up to 140W EPR (Extended Power Range) enabled by Thunderbolt 4.

Extensive connectivity

Connect all your devices with a multitude of ports, including a pop-out quick access module featuring two USB-C ports (up to 27W power delivery) and one USB-A port.

Stable connection

Connect to the Ethernet with a built-in RJ45 port with up to 2.5GbE. The Ethernet Switch mode feature gives you the flexibility to lock the wired Ethernet to a chosen PC while continuing to share one set of peripherals to control multiple PCs.

Works seamlessly with devices on macOS®*

Tested with devices on macOS, this Thunderbolt monitor Display P3 colour is your ideal Mac® devices companion for superb colour coverage and accuracy. Daisy chaining multiple displays via a single cable requires Thunderbolt connectivity. Please check your device for compatibility, as select M-series chips may not support some features. Install Dell Display and Peripheral Manager application to customise advance settings.


*Based on internal testing of Dell monitors connected to devices on macOS via Thunderbolt, June 2024. Some features may not be supported.

Effortless deployment and setup

This monitor is purpose-built with lightweight aluminium and a VESA-mounting solution for easy installation and flexible management.

Quick and simple setup

Replace a multiple monitor setup with a single, lightweight monitor for easier installation and reduced setup time. The 2m Thunderbolt cable powers your laptop and keeps your desk clutter-free with a single connection.

IT-friendly flexibility

Use the stand in the box for immediate setup or opt for a without stand option for VESA mounting flexibility. The Dell Pro Heavy Duty Single Arm - HDA26 is available for purchase separately from February 2026.

Dell Display and Peripheral Manager

Experience Dell’s singular, innovative application to optimise the performance of your entire Dell PC workspace⁴.

Maximise productivity

Easy Arrange tiles apps across screens with pre-set partitions and customises up to five windows, enhancing multitasking. Easy Arrange Memory saves and restores app profiles manually, on schedule, or at start-up.

Easy navigation

Control and work across multiple network or USB connected PCs and monitors with a single keyboard and mouse, seamlessly transferring files between them⁵.

More manageable

Save time and boost IT efficiency with the Dell Device Management Console to manage your Dell peripheral fleet at scale, from a single cloud-based console. Discover expanded Command Line Interface features from Dell Display and Peripheral Manager⁴.


Disclaimer: Screen image simulated for illustrative purposes only. Monitor model may vary.

Dell Colour Management

Optimise your picture

Customisable colours

Easily calibrate your monitor’s colours on the new Dell Colour Management software⁶, with Calman Verified certification.

Manage ICC profiles

Create, store, and manage ICC profiles on your computer dynamically through the software dashboard.

Compatible with multiple operating systems

Dell Colour Management software is compatible with multiple operating systems including Windows and macOS®.

Environmentally forward thinking

Intentional design in every part

At the heart of our design is a commitment to sustainability. That's why our monitor helps reduce waste with a design made from recycled materials, with up to 90% post-consumer recycled plastic, 100% recycled aluminium, 50% recycled steel, and 20% recycled glass⁷.

Environmental standards

This monitor is certified ENERGY STAR®, is registered EPEAT Gold with Climate+, and carries the latest TCO Certification, as well as being TCO Certified Edge, ensuring the use of safer materials, renewable energy use, and extended product life⁸.

Seamlessly modernise your tech

We can help you responsibly and securely retire your legacy IT equipment, regardless of brand, while addressing your sustainability goals.

Packaging with purpose

This monitor ships in a box made from 100% recycled or renewable materials. We are reducing paper usage in monitor packaging, which is equivalent to saving 545 trees annually⁹.

Ports and slots

Rear view

  1. Security lock slot
  2. Power connector
  3. 2 x HDMI 2.1 port
  4. 2 x DisplayPort 1.4 port (in)
  5. Thunderbolt 4 upstream (Video + Data). Alternate mode with DisplayPort 1.4, Power Delivery up to 140W EPR
  6. 3 x USB-C 10Gbps upstream port (data only)
  7. 4 x Super speed USB 10Gbps port
  8. RJ45 Ethernet port, 2.5GbE
  9. Stand lock
  10. 2 x USB-C 10Gbps downstream port with power charging (27W)
  11. USB Type-A 10Gbps downstream port with BC1.2 power charging
  12. Built-in speakers

Cables included

  • Power cable
  • DisplayPort 1.4 cable - 1.80 m
  • HDMI 2.1 cable - 1.80 m
  • USB-C to USB Type-A 10Gbps cable - 1.0 m
  • Thunderbolt 4 40Gbps active cable - 2.0 m

Dimensions and weight

1. Monitor height with stand:

Extended: 666.79 mm (26.25 in.)

Compressed: 576.79 mm (22.70 in.)

2. Monitor width: 1223.32 mm (48.16 in.)

3. Monitor height: 529.05 mm (20.83 in.)

4. Stand width: 363.00 mm (14.29 in.)

5. Monitor depth: 111.94 mm (4.41 in.)

6. Stand height:

Extended: 526.90 mm (20.74 in.)

Compressed: 426.50 mm (16.79 in.)

7. Stand depth: 255.00 mm (10.04 in.)


Weight

  • With stand and cables: 18.23 kg (40.19 lb)¹⁰
  • Without stand and cables: 12.95 kg (28.57 lb)¹⁰

Peace of mind, guaranteed

A brand you can rely on

As the No.1 monitor company worldwide¹¹, we take pride in our unyielding commitment to quality and the utmost customer satisfaction.

Premium Panel Exchange

Dell's Premium Panel Exchange (PPE) allows panel replacement on monitors during the applicable warranty period, even if only one bright pixel is found. PPE is not a standard or up-sell Support Service.

Best of CES 2026: Dell UltraSharp 52 Thunderbolt Hub Monitor - U5226KW

"Aimed at people who keep a lot on screen at once" — Reviewed.com

A trademark of Reviewed.com used under license. © 2026, reviewed.com All Rights Reserved.

1. Based on internal analysis of available 51.50" and 52.00" monitors in the market, August 2025.

2. Based on internal analysis of monitors with eye comfort features, August 2025.

3. Based on internal analysis, August 2025.

4. Based on Dell internal analysis, November 2024.

5. KVM (keyboard, video, mouse) is available on select monitors only. For monitors that don’t support USB KVM, the input source feature is an alternative. You can share multiple input sources to one monitor, but you cannot share one keyboard and mouse.

6. Compatible with external colorimeter (Portrait Displays: C6 HDR2000, X-Rite: i1Display Pro, i1Display Pro Plus, Klein Instruments: K10, Calibrate: ColorChecker Display Pro, ColorChecker Display Plus), sold separately.

7. Based on internal analysis, September 2025. Up to 90% recycled plastic, 100% recycled aluminium in the stand, up 50% recycled steel in the monitor head and stand, and at least 20% recycled glass in the panel.

8. Based on internal analysis, September 2025. ENERGY STAR certifications may vary by region and configuration. See www.energystar.gov/productfinder/ (in English) for certification status. EPEAT registered where applicable. EPEAT registration varies by country. See www.epeat.net (in English) for registration status by country. TCO Certification may vary by region and configuration. See www.tcocertified.com/product-finder/ (in English) for certification status.

9. Based on internal analysis, September 2025. Applies to all Dell monitors launched since 2023. Made from FSC mix sources which is a mix of material from FSC certified forests, recycled content and/or FSC controlled wood. January 2025, introduced cushions now made from corrugated materials. Paper reduction applies to all Monitors shipping in 2026. Reductions in paper usage in monitor packaging is attributed to the quick start guide size reduction and calibration sheet digitisation. Calculation for trees saved based on: Detailed Calculator | 10 THOUSAND TREES. https://www.omnicalculator.com/everyday-life/paper-weight (in English).

10. Weights vary depending on configurations and manufacturing variability.

11. Source: IDC Worldwide Quarterly PC Monitor Tracker, Q2 2025.