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

SKU
40U990A-W.AEK
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40 Inch UltraFine 5K2K WUHD Nano IPS Black Monitor with Thunderbolt 5 PD 96W
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.
SKU 40U990A-W.AEK
EAN 8806096511282
Specification
Audio
Built-in speaker(s)Yes
RMS rated power20 W
Performance
Built-in speaker(s)Yes
RMS rated power20 W
Built-in cameraNo
AMD FreeSync typeFreeSync Premium
AMD FreeSyncYes
NVIDIA G-SYNCNo
Brand specific technologiesBlack Stabilizer
Display
Display brightness (typical)450 cd/m²
Screen shapeCurved
Display number of colours1.06 billion colours
Native aspect ratio21:9
Pixel density139 ppi
Maximum refresh rate120 Hz
HD typeWUHD
Display technologyLCD
Viewing angle, horizontal178°
Viewing angle, vertical178°
Pixel pitch0.1815 x 0.1815 mm
Display resolution5120 x 2160 pixels
Display diagonal100.8 cm (39.7")
Contrast ratio (typical)2000:1
TouchscreenNo
High Dynamic Range (HDR) supportedYes
Panel typeNano IPS
DCI-P3 coverage99%
High Dynamic Range (HDR) technologyDisplayHDR 600, HDR Effect, High Dynamic Range 10 (HDR10)
Screen curvature rating2500R
Display diagonal (metric)101 cm
Colour gamut standardDCI-P3
Response time measurement typeGTG (Gray to Gray)
Management features
Picture-in-PictureYes
Multimedia
Number of speakers2
Built-in speaker(s)Yes
RMS rated power20 W
Built-in cameraNo
Design
Market positioningProfessional
Country of originChina
Product colourBlack
Camera
Built-in cameraNo
Ports & interfaces
Built-in USB hubNo
USB upstream port typeUSB Type-C
USB Type-C downstream ports quantity4
Headphone outYes
HDMI ports quantity2
DisplayPorts quantity1
HDMIYes
DisplayPort version2.1
Number of USB Type-C upstream ports quantity1
Ethernet LANYes
Technical details
Height (without stand)419.1 mm
Depth (without stand)106.7 mm
Width (without stand)947.4 mm
Cable lock slotNo
HDMIYes
Product colourBlack
Country of originChina
Weight (with stand)14.1 kg
TouchscreenNo
Network
Ethernet LANYes
Ergonomics
VESA mountingYes
Cable lock slotNo
Panel mounting interface100 x 100 mm
SwivellingYes
Picture-in-PictureYes
Height adjustmentYes
Tilt adjustmentYes
Picture-by-Picture (PbP)Yes
Power
AC input voltage100 - 240 V
AC input frequency50/60 Hz
Power consumption (off)0.3 W
Energy efficiency scaleA to G
Energy efficiency class (SDR)F
Energy efficiency class (HDR)G
Energy consumption (SDR) per 1000 hours40 kWh
Energy consumption (HDR) per 1000 hours58 kWh
Weight & dimensions
Height (without stand)419.1 mm
Depth (without stand)106.7 mm
Width (without stand)947.4 mm
Width (with stand)947.4 mm
Depth (with stand)259.1 mm
Height (with stand)614.7 mm
Weight (with stand)14.1 kg
Weight (without stand)9.21 kg
Package width1206.5 mm
Package depth200.7 mm
Package height419.1 mm
Package weight17.8 kg
Packaging data
Package width1206.5 mm
Package depth200.7 mm
Package height419.1 mm
Package weight17.8 kg
Package typeBox
Cables includedDisplayPort, HDMI, Thunderbolt, USB Type-C
Packaging content
Cables includedDisplayPort, HDMI, Thunderbolt, USB Type-C
Features
Country of originChina
Other features
Country of originChina
Picture-by-Picture (PbP)Yes
DCI-P3 coverage99%
Brand specific technologiesBlack Stabilizer
Height (without stand)419.1 mm
Depth (without stand)106.7 mm
Width (without stand)947.4 mm
HDMIYes
Energy efficiency scaleA to G
Ethernet LANYes
TouchscreenNo
Package typeBox
Manufacturer LG
Availability Y