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Review Summary
Accidents happen where life happens. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failure, and more.
If we can’t fix it, we’ll replace it at no additional cost.
Protect your product from drops, spills, and more.
Enjoy your gear without fear. We have you covered!
When regular use of your product over time results in mechanical or electrical failure.
We will never charge you a deductible after the purchase of a plan.
Our claims process is simple & easy and our customer service team is happy to help.
Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for purchase Internationally or in U.S. Territories.
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39.7" (100.8cm)
21:9
IPS Black LED
5ms (GtG at Faster)
5K2K WUHD 5120 x 2160
0.1815 x 0.1815mm
1.06B
178 Degree (R/L), 178 Degree (U/D)
450 cd/sq. m (Typ.)
360 cd/sq. m (Min.)
2000:1 (Typ.)
1400:1 (Min.)
Typical: DCI-P3 99% (CIE1976)
Minimum: DCI-P3 95% (CIE1976)
2500R
120Hz (Max.)
Yes
Yes (2ea)
Yes (UHD/120Hz)
Yes (1ea)
2.1 (UHBR 13.5)
Yes (In 1ea/Out 1ea)
Yes (1Up/4Down)
4-pole (Mic + Sound)
Yes
Yes
96W
USB-C 4EA (15W 1EA, 4.5W 3EA) 10Gbps
USB-A 2EA 10Gbps
Yes (via Thunderbolt & USB-C 10Gbps)
Yes
Yes
FreeSync Premium
Yes
Yes
Yes
Yes
Yes
Yes (2PBP)
Yes
HW Calibration Ready
Yes
Yes
Yes
Yes
Yes
DisplayHDR 600
Yes
Yes
Yes
Yes
Tilt/Height/Swivel
100 x 100mm
Yes
2x 10W
Less than 1.2W (Sleep Mode)
45W (Typ.)
Less than 0.3W (DC Off)
100-240V (50/60Hz)
Built-in Power
Yes
Yes
White
With Stand: 37.3 x 24.2 x 10.2" (947.7 x 614.3 x 260mm)
Without Stand: 37.3 x 16.53 x 4.18" (947.7 x 419.8 x 106.3mm)
With Stand: 31.09 lbs (14.1kg)
Without Stand: 20.28 lbs (9.2kg)
195174122365
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 39.7" curved (2500R), Nano IPS Black panel offers brilliant color, and spectacular contrast - a new go-to display for creators, multitaskers and gamers.
Sharper 5K2K Details on a Wide Creative Canvas
The 5K2K (5120x2160) Nano IPS Black display offers ultra-wide resolution, vivid color, and razor-sharp detail-providing a spacious, precise workspace ideal for video editing, graphic design, photography, and color-critical creative 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.