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

SKU
40U990A-W.AEK
In stock
£1,361.18 £1,134.32
-
+
Overview
40 Inch UltraFine 5K2K WUHD Nano IPS Black Monitor with Thunderbolt 5 PD 96W
  • World’s first 5K2K monitor with ThunderboltTM 5 for pro-level performance
  • See sharper, work smarter—5K2K clarity for design, editing, and visual precision
  • A wide 5K2K display built for creative precision and focused workflows
  • Nano IPS Black and HDR 600 deliver deep blacks, vivid color, and contrast
  • From bold to subtle, up to 99% DCI-P3 ensures impeccable color in every project
  • 2000:1 contrast ratio delivers deeper blacks and remarkable visual depth
  • ThunderboltTM 5 powers fast, stable 5K2K production with 96W charging
  • Connect two monitors and a laptop with a clean, single-cable daisy chain setup
More Information
SKU 40U990A-W.AEK
EAN 8806096511282
Manufacturer LG
Availability In Stock
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.
Display
HDCPYes
Display brightness (typical)450 cd/m²
Screen shapeCurved
Display number of colours1.06 billion colours
Native aspect ratio21:9
Pixel density139 ppi
Colour gamut99%
Maximum refresh rate120 Hz
Display brightness (min)320 cd/m²
HD typeWUHD
Display technologyLCD
Viewing angle, horizontal178°
Viewing angle, vertical178°
Pixel pitch0.1815 x 0.1815 mm
Aspect ratio32:9
3DNo
Backlight typeEdge-Lit
Display resolution5120 x 2160 pixels
Display diagonal100.8 cm (39.7")
Contrast ratio (typical)2000:1
Response time (fast)5 ms
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
LED backlightYes
Display brightness400 cd/m²
High frequency rate144 Hz
Colour gamut standardDCI-P3
Response time measurement typeGTG (Gray to Gray)
Audio
Built-in speaker(s)Yes
RMS rated power20 W
Performance
Built-in speaker(s)Yes
RMS rated power20 W
Built-in microphoneNo
Built-in cameraNo
AMD FreeSync typeFreeSync Premium
AMD FreeSyncYes
NVIDIA G-SYNCNo
Brand specific technologiesBlack Stabilizer
Low input lagNo
FPS counterNo
Management features
On Screen Display (OSD)No
Plug and PlayYes
Picture-in-PictureYes
Multimedia
Number of speakers2
Built-in speaker(s)Yes
RMS rated power20 W
Built-in microphoneNo
Built-in cameraNo
MultiroomNo
Adaptive Sound ProNo
Audio Return Channel (ARC)No
Design
Market positioningProfessional
Country of originChina
Product colourBlack
RefurbishedNo
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
HDCPYes
HDMIYes
HDMI version2.1
DisplayPort version2.1
Charging port typeUSB Type-C
Number of USB Type-C upstream ports quantity1
Built-in KVM switchYes
HDCP version2.2
USB requiredNo
BluetoothNo
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
Built-in microphoneNo
Product colourBlack
Country of originChina
Power supply typeInternal
Weight (with stand)14.1 kg
TouchscreenNo
Network
BluetoothNo
Ethernet LANYes
Ergonomics
Wall mountableYes
VESA mountingYes
Cable lock slotNo
Panel mounting interface100 x 100 mm
SwivellingYes
On Screen Display (OSD)No
Plug and PlayYes
Picture-in-PictureYes
Height adjustmentYes
Tilt adjustmentYes
Picture-by-Picture (PbP)Yes
Power
Power supply typeInternal
AC input voltage100 - 240 V
AC input frequency50/60 Hz
Power consumption (standby)1.2 W
Power consumption (typical)40 W
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 hours45 kWh
Energy consumption (HDR) per 1000 hours58 kWh
European Product Registry for Energy Labelling (EPREL) code2316993
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
Stand includedYes
Remote control includedNo
Quick start guideYes
ManualYes
Cables includedDisplayPort, HDMI, Thunderbolt, USB Type-C
Remote control batteries includedNo
Power adapter includedYes
Packaging content
Stand includedYes
Remote control includedNo
Quick start guideYes
ManualYes
Cables includedDisplayPort, HDMI, Thunderbolt, USB Type-C
Remote control batteries includedNo
Power adapter includedYes
Installation CDNo
Swivel armNo
Sustainability
European Product Registry for Energy Labelling (EPREL) code2316993
Features
Country of originChina
Other features
Country of originChina
Picture-by-Picture (PbP)Yes
DCI-P3 coverage99%
Brand specific technologiesBlack Stabilizer
Low input lagNo
FPS counterNo
Height (without stand)419.1 mm
Depth (without stand)106.7 mm
Width (without stand)947.4 mm
BluetoothNo
Remote control includedNo
Quick start guideYes
HDMIYes
Energy efficiency scaleA to G
Power supply typeInternal
ManualYes
Ethernet LANYes
TouchscreenNo
Package typeBox
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You're reviewing:LG 40U990A-W computer monitor 100.8 cm (39.7") 5120 x 2160 pixels WUHD LCD Black
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SKU
40U990A-W.AEK
PA27UCX-K
EV3895-BK
DELL-UP3221Q
40B1U6903CH/00
LS27C902PAUXXU
Manufacturer
LG
ASUS
Eizo
DELL
Philips
Samsung
Display diagonal
30 to 50 inches
≈ 21 inches
30 to 50 inches
30 to 50 inches
30 to 50 inches
≈ 21 inches
Product colour
Black
Black
Black
N/A
Black
Silver
Built-in camera
N
N
N/A
N
Y
N
Market positioning
Professional
Graphics design
Business
Graphics design
N/A
Smart
Native aspect ratio
21:9
16:9
24:10
16:9
21:9
16:9
VESA mounting
Y
Y
Y
Y
Y
N/A
NVIDIA G-SYNC
N
N/A
N
N
N
N
Built-in USB hub
N
Y
Y
Y
Y
Y
AMD FreeSync
Y
N/A
N
N
N
N
Display technology
LCD
LED
LED
LCD
LCD
LED
Touchscreen
N
N
N
N
N
N/A
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