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LG 40U990A-W computer monitor 101.6 cm (40") 5120 x 2160 pixels WUHD Black
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 diagonal
101.6 cm (40")
HD type
WUHD
Display resolution
5120 x 2160 pixels
Screen shape
Curved
Native aspect ratio
21:9
Number of speakers
2
RMS rated power
10 W
Wi-Fi
No
Bluetooth
No
Product colour
Black
VESA mounting
Yes
Panel mounting interface
100 x 100 mm
High Dynamic Range (HDR) supported
Yes
HDMI ports quantity
2
Energy efficiency class (SDR)
F
Energy efficiency class (HDR)
G
Energy consumption (SDR) per 1000 hours
40 kWh
Energy consumption (HDR) per 1000 hours
58 kWh
Width (with stand)
947.4 mm
Depth (with stand)
259.1 mm
Height (with stand)
614.7 mm
Weight (with stand)
14.1 kg
Width (without stand)
947.4 mm
Depth (without stand)
106.7 mm
Height (without stand)
419.1 mm
Weight (without stand)
9.21 kg
Touchscreen
No
Display number of colours
1.06 billion colours
Maximum refresh rate
120 Hz
Cables included
USB Type-C; HDMI; Thunderbolt; DisplayPort
Package type
Box
Package width
1206.5 mm
Package depth
200.7 mm
Package height
419.1 mm
Package weight
17.8 kg
Power consumption (off)
0.3 W
Manual
Yes
Country of origin
China
Ethernet LAN
Yes
AC input voltage
100 - 240 V
Power consumption (typical)
45 W
Built-in speaker(s)
Yes
Energy efficiency scale
A to G
AC input frequency
50/60 Hz
Remote control included
No
Stand included
Yes
Contrast ratio (typical)
2000:1
Viewing angle, horizontal
178°
Viewing angle, vertical
178°
Display diagonal (metric)
101 cm
LED backlight
Yes
Wall mountable
Yes
High Dynamic Range (HDR) technology
High Dynamic Range 10 (HDR10); HDR Effect; DisplayHDR 600