5120 x 2160 at 60Hz
8 ms (gray-to-gray normal); 5 ms (gray-to-gray fast)
More screen to captivate you: Stay on task with immersive productivity on the world’s first 40-inch curved ultrawide WUHD 5K2K monitor.i 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.
Connect to productivity: With Thunderbolt™ 3 and RJ45, this monitor serves as a productivity hub that delivers stable Etherneti and up to 90W of power deliveryi—all in a clutter-free setup.
Lightning speed: Thunderbolt™ 3 delivers speeds of up to 40Gbpsi, creating one compact port that does it all—delivering the fastesti and most versatile connection to any dock, displayi 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 10Gbpsi. 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-throughi, 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.
Easy on the eyes: Experience vibrant color that's easy on your eyes with ComfortView Plusi, 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.
Productive at every level: Easy Arrange allows you to easily tile multiple applications across one or more screens with 38 pre-set window partitions and the ability to personalize up to five windows, giving you improved multitasking abilities.i
Seamless transitions: The auto-restore feature remembers where you left off, so applications will go back to where you left them, even after you’ve unplugged.
More ways to manage: Asset management reports allow IT managers to quickly capture and track monitor information as well as configure multiple monitors at once through a single setup.
The key to convenience: Shortcut keys can save you even more time, letting you easily configure your display management settings so you can get to work faster.
Environmental standards: This monitor meets the latest regulatory and environmental standards such as EnergyStar®, TCO and registered under EPEAT®i.
Eco-conscious packaging: To reduce our manufacturing impact on the environment, this monitor is shipped Styrofoam-free and the paper-based packaging is made of at least 75% recycled cardboard.
Energy conservation: Save energy when your monitor is not in use with PowerNapi, a feature that dims or puts your monitor to sleep when it’s not in use.
Advancing sustainability: Dell Technologies is committed to reducing environmental impact throughout the product lifecycle. Read more about our commitment to sustainability and our 2030 Social Impact goals here, and our product’s carbon footprint here.
Ports & Slots:
1. Security lock slot | 2. Power connector | 3. HDMI port | 4. HDMI port | 5. DisplayPort in | 6. Audio line-out porti | 7. Thunderbolt™ 3 (90W)/DisplayPort | 8. USB upstream port | 9. Super speed USB 10 Gbps (USB 3.2 Gen 2 (4)) | 10. RJ45 | 11. USB-C downstream port | 12. Stand lock
Cables included: Power cable | DisplayPort cable (DP to DP) | Super speed USB 5 Gbps (USB 3.2 Gen1) Upstream Cable (Type-A to Type-B) | HDMI cable | Thunderbolt™ 4 (USB-C) Active Cable
Our products are engineered with care and precision, so we guarantee support and peace of mind.
As the No. 1 monitor company worldwide for seven consecutive years (2013 to 2020)i, we take pride in our unyielding commitment to quality and the utmost satisfaction of our customers.
The Dell Premium Panel Exchange allows a free panel replacement during the Limited Hardware Warrantyi period even if only one bright pixel is found.
Complete your experience with accessories designed to make the most of your Dell UltraSharp Monitor.
Enjoy a uniquely designed, arc-shaped mouse that fits into virtually any workspace, and boost productivity with a keyboard that features multi-OS support and popular shortcut keys.
Experience exceptional audio clarity with this stereo headset that is certified for Microsoft® Skype® for Business. Featuring HD wideband voice to optimize in-person call quality and music clarity.
CES® Innovation Awards are granted to products based upon materials submitted by the honorees. CTA neither verifies the accuracy of any submissions nor tests any products.
"The combination of ultra-wide display and 4K levels of pixel density across its giant screen might be the best thing to ever happen to your home office." — Tom's Guide
"The 2,500 radius curve is its primary appeal." — Digital Trends
"It’s hard not to be impressed by the Dell U4021QW’s massive 40-inch curved 5K panel." — Laptop Mag
"A monitor to rule them all." — Design Milk
"The new UltraSharp 40 Curved monitor include the ability to connect two PCs to the monitor at a time, allowing users to switch between the two PCs." — CRN®
From drivers and manuals to diagnostic tools and replacement parts, Dell Product Support has you covered!