Overview



The World’s First 5K2K Monitor with Thunderbolt™ 5

The LG UltraFine™ 40U990A is the world’s first 5K2K widescreen monitor with Thunderbolt™ 5, delivering ultra-fast data transfer, 96W charging, and dual display support. The monitor's 40” curved (2500R), Nano IPS Black panel offers brilliant color, and spectacular contrast - a new go-to display for creators, multritaskers and gamers.

5K2K Means More Pixels for More Creative Control

The 5K2K (5120x2160) Nano IPS Black display offers 33% more pixels than standard 4K UHD, delivering ultra-wide resolution, vivid color, and razor-sharp detail—creating a spacious, precise workspace ideal for video editing, graphic design, photography, and color-critical tasks.

Built for creators. Ready for professionals.

Built for creative flow, the UltraFine™ 5K2K screen makes it easy to work across complex timelines, layered interfaces, and multiple windows—ideal for editing, producing, and programming.

VESA DisplayHDR™ 600 Meets Nano IPS Black Brilliance

VESA DisplayHDR™ 600 and Nano IPS Black combine to deliver deep blacks, vivid highlights, and cinematic color—ideal for creators who need precision in light, shadow, and texture.

Up to 99% DCI-P3 Color Brilliance for Visual Pros

With up to 99% DCI-P3 color gamut coverage, this UltraFine™ display delivers bold, vibrant color across a wide spectrum—ideal for impactful video, photo, and design work in print, digital, and broadcast formats.

2000:1 Contrast for Stunning Visual Depth

Nano IPS Black enhances contrast to 2000:1, revealing richer shadows, deeper blacks, and sharper detail—perfect for bold color, improved depth, and edge-to-edge consistency.

5K2K Production Powered by Thunderbolt™ 5

Thunderbolt™ 5 supports commercial-level video, film, and game production with faster data transfer, 96W charging, and seamless 5K2K output—all through a single, stable, high-speed cable.

Daisy Chain Enhances Multitasking Efficiency

Daisy chain two monitors and a laptop via Thunderbolt™ 5 and DisplayPort—simplifying your workspace while expanding screen space for multitasking, content creation, or focused productivity

Versatile Ports for Limitless Possibilities

Thunderbolt™ 5, HDMI 2.1 (x2), DisplayPort 2.1 (UHBR 13.5) and USB-C let you connect laptops, cameras, and drives—no adapters needed. Enjoy stable, streamlined performance across creative, gaming, or professional workflows.

Dual Speakers. Deep, Immersive Sound.

Let the action surround you with dual speakers and Rich Bass—delivering deeper, fuller sound that enhances cinematic scenes.

FreeSync™ Premium Smooths Every Frame

FreeSync™ Premium keeps motion smooth and responsive, reducing screen tearing and stutter while mixing audio, gaming, or reviewing high-resolution video.

Personalized Your Display with Switch App

Easily customize image settings, split your screen into 11 layouts, and launch video calls instantly with the LG Switch App—streamlining your setup for productivity and entertainment.

Designed for Comfort and Focus

The narrow bezeled, 3-sided virtually borderless design and compact L-stand save space and reduce distractions, while tilt, height, and swivel adjustments support comfort and focus during long creative sessions.




At-a-glance



  • 2000:1 contrast ratio delivers deeper blacks and remarkable visual depth

  • A wide 5K2K display built for creative precision and focused workflows

  • Connect two monitors and a laptop with a clean, single-cable daisy chain setup

  • From bold to subtle, up to 99% DCI-P3 ensures impeccable color in every project

  • Nano IPS Black and HDR 600 deliver deep blacks, vivid color, and contrast

  • See sharper, work smarter—5K2K clarity for design, editing, and visual precision

  • Thunderbolt™ 5 powers fast, stable 5K2K production with 96W charging

  • World’s first 5K2K monitor with Thunderbolt™ 5 for pro-level performance




Reasons to buy


  • 2000:1 contrast ratio delivers deeper blacks and remarkable visual depth
  • A wide 5K2K display built for creative precision and focused workflows
  • Connect two monitors and a laptop with a clean, single-cable daisy chain setup
  • From bold to subtle, up to 99% DCI-P3 ensures impeccable color in every project
  • Nano IPS Black and HDR 600 deliver deep blacks, vivid color, and contrast
  • See sharper, work smarter—5K2K clarity for design, editing, and visual precision
  • Thunderbolt™ 5 powers fast, stable 5K2K production with 96W charging
  • World’s first 5K2K monitor with Thunderbolt™ 5 for pro-level performance

Specification


Technical Description: LG 40U990A-W computer monitor 100.8 cm (39.7") 5120 x 2160 pixels WUHD LCD Black

Design
Product colour:
Black
Market positioning:
Professional

Display
DCI-P3 coverage:
99%
Colour gamut standard:
DCI-P3
High Dynamic Range (HDR) technology:
DisplayHDR 600, HDR Effect, High Dynamic Range 10 (HDR10)
High Dynamic Range (HDR) supported:
Yes
Display diagonal (metric):This is the size of the display screen, measured diagonally.
101 cm
Pixel density:
139 ppi
Pixel pitch:This is the parameter of a picture tube, which specifies the shortest distance between two dots of the same colour. The principle is: the smaller the dot pitch, the better sharpness of image.
0.1815 x 0.1815 mm
Display number of colours:
1.06 billion colours
Viewing angle, vertical:Maximum vertical angle at which a display can be viewed with acceptable visual performance.
178°
Viewing angle, horizontal:Maximum horizontal angle at which a display can be viewed with acceptable visual performance.
178°
Maximum refresh rate:
120 Hz
Contrast ratio (typical):The difference in light intensity between the brightest white and the darkest black.
2000:1
Screen curvature rating:
2500R
Screen shape:
Curved
Response time measurement type:
GTG (Gray to Gray)
Display brightness (typical):
450 cd/m²
Panel type:
Nano IPS
HD type:Type of supported High Definition (e.g. Full HD, 4K Ultra HD).
WUHD
Touchscreen:A screen of a laptop, smartphone, etc., that responds to touch so you can control the interface using your fingers.
No
Display technology:The technology used in the display e.g. plasma, LED.
LCD
Native aspect ratio:The aspect ratio is the ratio of the width of an image to its height. The native aspect ratio is the one which the projector/display is particularly designed for. Images shown in native aspect ratio will utilize the entire resolution of the display and achieve maximum brightness. Images shown in other than native aspect ratio will always have less resolution and less brightness than images shown in native aspect ratio.
21:9
Display resolution:The number of distinct pixels in each dimension that can be displayed. It is usually quoted as width × height, with the units in pixels: for example, "1024 × 768" means the width is 1024 pixels and the height is 768 pixels. The higher the number of pixels, the sharper the image.
5120 x 2160 pixels
Display diagonal:Size of the display for this product, measured diagonally, usually in inches.
100.8 cm (39.7")

Ergonomics
Picture-in-Picture:Picture-in-picture (PiP) is a feature of some television receivers and similar devices. One program (channel) is displayed on the full TV screen at the same time as one or more other programs are displayed in inset windows. Sound is usually from the main program only.
Yes
Tilt adjustment:The tilt, which means the angle at which the device is pointing (up or down), can be changed.
Yes
Swivelling:
Yes
Height adjustment:The part of the device that can be adjusted to change the height.
Yes
Cable lock slot:Holes on the edge of devices through which a cable lock can be passed, so the device can be locked to a desk etc.
No
Panel mounting interface:
100 x 100 mm
VESA mounting:
Yes

Multimedia
Built-in camera:The product has an integrated camera.
No
RMS rated power:RMS (Root mean square) is a measure of the continuous power required by a device, in particular audio amplfiers and loudspeakers.
20 W
Number of speakers:The quantity of speakers included in/with the product.
2
Built-in speaker(s):The device contains speaker(s) to produce sound.
Yes

Network
Ethernet LAN:An Ethernet LAN (Local Area Network) interface is present, for a wired conection via a cable.
Yes

Other features
Picture-by-Picture (PbP):
Yes
Brand specific technologies:
Black Stabilizer
Country of origin:Country where the device is made.
China

Packaging content
Cables included:
DisplayPort, HDMI, Thunderbolt, USB Type-C

Packaging data
Package type:The type of product package e.g. box.
Box
Package weight:Weight of the packaged product.
17.8 kg
Package height:The distance from the top to the bottom of the packaging.
419.1 mm
Package depth:The distance from the front to the back of the packaging.
200.7 mm
Package width:The distance from one side of the packaging to the other.
1206.5 mm

Performance
AMD FreeSync type:
FreeSync Premium
AMD FreeSync:
Yes
NVIDIA G-SYNC:
No

Ports & interfaces
Headphone out:The socket for connecting headphones to the device.
Yes
DisplayPort version:
2.1
DisplayPorts quantity:Number of DisplayPorts. A DisplayPort is a digital display interface developed by the Video Electronics Standards Association (VESA). The interface is primarily used to connect a video source to a display device such as a computer monitor, though it can also be used to carry audio, USB, and other forms of data.
1
HDMI ports quantity:The number of sockets (ports) for HDMI connections. HDMI (High-Definition Multimedia Interface) is a compact audio/video interface for transferring uncompressed video data and compressed/uncompressed digital audio data from a HDMI-compliant device ("the source device") to a compatible computer monitor, video projector, digital television, or digital audio device. HDMI is a digital replacement for existing analog video standards.
2
HDMI:HDMI (High-Definition Multimedia Interface) is a compact audio/video interface for transferring uncompressed video data and compressed/uncompressed digital audio data from a HDMI-compliant device ("the source device") to a compatible computer monitor, video projector, digital television, or digital audio device. HDMI is a digital replacement for existing analog video standards.
Yes
USB Type-C downstream ports quantity:
4
Number of USB Type-C upstream ports quantity:
1
USB upstream port type:
USB Type-C
Built-in USB hub:
No

Power
Energy efficiency scale:
A to G
AC input frequency:
50/60 Hz
AC input voltage:The voltage of the AC electricity that is inpitted into the product.
100 - 240 V
Power consumption (off):
0.3 W
Energy consumption (HDR) per 1000 hours:
58 kWh
Energy consumption (SDR) per 1000 hours:
40 kWh
Energy efficiency class (HDR):
G
Energy efficiency class (SDR):
F

Weight & dimensions
Weight (without stand):
9.21 kg
Height (without stand):
419.1 mm
Depth (without stand):
106.7 mm
Width (without stand):
947.4 mm
Weight (with stand):
14.1 kg
Height (with stand):
614.7 mm
Depth (with stand):
259.1 mm
Width (with stand):
947.4 mm


Product details


40U990A-W.AEK LG Electronics 8806096511282

LG 40U990A-W computer monitor 100.8 cm (39.7") 5120 x 2160 pixels WUHD LCD Black

£1388.99 and In stock

SKU40U990A-W.AEK

LG 40U990A-W computer monitor 100.8 cm (39.7") 5120 x 2160 pixels WUHD LCD Black

Quick Code: Q2714088 MPN: 40U990A-W.AEK
£1388.99

Quantity:
In Stock