40 Inch UltraFine™ 5K2K WUHD Nano IPS Black Monitor with Thunderbolt™ 5 PD 96W

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LG UltraFine 40U990A Monitor | 40" 5K2K Resolution 21:9 Display with Thunderbolt 5
40 Inch UltraFine™ 5K2K WUHD Nano IPS Black Monitor with Thunderbolt™ 5 PD 96W 40U990A-W

LG UltraFineTM
World's First 5K2K Monitor with ThunderBoltTM 5
Rich detail and visual depth
Faster Transfer (Up to 80 Gbps)
96W Power Delivery
5K2K
5K2K Display
*World's First ThunderboltTM 5 5K2K resolution monitor as of August 2025.
*To work properly, the Thunderbolt 5 cable included in this package is required to connect the Thunderbolt 5 port to the monitor.
*To access all features including 96W charging and 5120x2160 @120Hz output, your device must support Thunderbolt 5 or DisplayPort 2.1.
LG UltraFineTM
5K2K Resolution
Detail That Goes Further
5120x2160
40 Inch UltraFine™ 5K2K WUHD Nano IPS Black Monitor with Thunderbolt™ 5 PD 96W 40U990A-W

40 Inch UltraFine™ 5K2K WUHD Nano IPS Black Monitor with Thunderbolt™ 5 PD 96W

40U990A-W

Key features

  • World’s first 5K2K monitor with Thunderbolt™ 5 for pro-level performance¹
  • 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
  • Thunderbolt™ 5 powers fast, stable 5K2K production with 96W charging²
  • Connect two monitors and a laptop with a clean, single-cable daisy chain setup³

Delivery

LG Premium Care by Asurion

This coverage adds to the standard manufacturer’s limited warranty. Not available in Florida.


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$1,799.99

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Extended Coverage
1-year standard warranty with parts and labor included. Additional extended service plans available.
Specifications

  • Picture Quality
  • Special Features
  • Input/Output
  • Stand
  • Sound
  • Power
  • Dimensions/Weights
  • Cabinet/Accessories
  • Warranty
  • See All
  • Picture Quality
    PPI
    139
    Color Depth (Number of Colors)
    1.06B
    Aspect Ratio
    21:9
    Brightness (Typical, Minimum)
    (Typ.) 450 cd/m² (Min.) 360 cd/m²
    Color Gamut (Typ.)
    DCI-P3 99% (CIE1976)
    Contrast Ratio
    2000:1 (Typ.)
    Display Type
    Nano IPS Black
    Pixel Pitch (mm)
    0.1815 x 0.1815
    Refresh Rate
    120Hz
    Resolution
    5120 x 2160
    Response Time (GTG)
    5ms (GtG at Faster)
    Screen Size
    39.7"
    Viewing Angle
    178˚(R/L), 178˚(U/D)
    Picture Quality
    PPI
    139
    Color Depth (Number of Colors)
    1.06B
    Aspect Ratio
    21:9
    Brightness (Typical, Minimum)
    (Typ.) 450 cd/m² (Min.) 360 cd/m²
    Color Gamut (Typ.)
    DCI-P3 99% (CIE1976)
    Contrast Ratio
    2000:1 (Typ.)
    Display Type
    Nano IPS Black
    Pixel Pitch (mm)
    0.1815 x 0.1815
    Refresh Rate
    120Hz
    Resolution
    5120 x 2160
    Response Time (GTG)
    5ms (GtG at Faster)
    Screen Size
    39.7"
    Viewing Angle
    178˚(R/L), 178˚(U/D)
    Special Features
    Curvature
    2500R
    Thunderbolt™ 5
    Yes
    Headphone 4-Pole (Sound+Mic)
    Yes
    AMD FreeSync Premium
    Yes
    VRR
    Yes
    KVM
    Yes
    LG Switch
    Yes
    Auto Brightness
    Yes
    Auto Input Switch
    Yes
    Black Stabilizer®
    Yes
    Color Weakness Mode
    Yes
    Curved
    Yes
    Dual Controller
    Yes
    Dynamic Action Sync®
    Yes
    Factory Calibration
    Yes
    Flicker Safe
    Yes
    H/W Calibration (True Color Pro)
    Yes
    HDR Effect
    Yes
    HDR10
    Yes
    Live Color Low Blue Light
    Yes
    Nano IPS™ Technology
    Yes
    PBP (Picture by Picture)
    Yes
    PIP (Picture in Picture)
    Yes
    Reader Mode
    Yes
    Smart Energy Saving
    Yes
    Super Resolution+
    Yes
    User Define Key
    Yes
    VESA DisplayHDR™
    DisplayHDR™ 600
    Input/Output
    USB Down-stream
    USB-C x 4EA(15Wx1EA, 4.5Wx3EA) 10Gbps USB-A x 2EA 10Gbps
    DisplayPort
    1
    USB Up-stream
    Yes (via Thunderbolt & USB-C 10Gbps)
    Thunderbolt (Power Delivery)
    96W
    USB Type-C
    4
    HDMI
    2
    HDMI Version 2.1
    Yes
    Daisy Chain
    Yes
    DP Version
    2.1
    Headphone Out
    Yes
    LAN
    Yes
    USB-C (Data Transmission)
    Yes
    Stand
    Stand Ergonomics
    Tilt/Height/Swivel
    One Click Stand Set-up
    Yes
    Wall Mount Size (mm)
    100 x 100
    Sound
    Rich Bass
    Yes
    Speaker
    Yes
    Power
    DC Off (Max)
    Less than 0.3W
    Input
    100~240V (50/60Hz)
    Power Save/Sleep Mode (Max)
    Less than 1.2W
    Type
    Built-in Power
    Dimensions/Weights
    Shipping Dimensions (WxHxD)
    47.5" × 21.0" × 7.9"
    Shipping Weight
    39.2 lbs
    With Stand (WxHxD)
    37.3" × 24.2" × 10.2"
    With Stand Weight
    31.1 lbs
    Without Stand (WxHxD)
    37.3" × 16.5" × 4.2"
    Without Stand Weight
    20.3 lbs
    Cabinet/Accessories
    Thunderbolt Cable
    Yes
    USB Type-C Cable
    Yes
    Display Port Cable
    Yes
    HDMI Cable
    Yes
    Warranty
    Country of origin
    China
    Limited Warranty
    1 Year Parts & Labor
    UPC
    195174122365
    Features

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

    The LG UltraFine™ 40U990A is the world’s first 5K2K widescreen monitor with Thunderbolt™ 51, 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.

    LG UltraFineTM Display

    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.

    Sharper 5K2K Details on a Wide Creative Canvas

    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.

    Built for creators. Ready for professionals.

    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.

    VESA CERTIFIED
DisplayHDRTM 600

    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.

    up to 99% DCI-P3 with nano IPS Black

    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.

    contrast 1000:1
contrast  2000:1

    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.2

    5K2K Production Powered by Thunderbolt™ 5

    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.3

    Daisy Chain Enhances Multitasking Efficiency

    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.

    ThunderboltTM 5 x2
HDMI 2.1 x2
USB-C down x4
DisplayPort 2.1 x1

    Dual Speakers. Deep, Immersive Sound.

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

    Dual speakers with Rich bass

    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.

    AMD FreeSync
Premium

    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.4

    Personalized Your Display with Switch App

    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.

    Designed for Comfort and Focus
    For owners

    Warranty Information

    1World’s First Thunderbolt™ 5 5K2K resolution monitor as of August 2025: https://www.thunderbolttechnology.net/products 

    2To work properly, the Thunderbolt 5 cable included in this package is required to connect the Thunderbolt 5 port to the monitor. To access all features including 96W charging and 5120×2160 @120Hz output, your device must support Thunderbolt 5 or DisplayPort 2.1. DP, HDMI, USB-C and Thunderbolt cables are included in the package.

    3Second monitor available separately. DPx1, HDMIx1, USB-Cx1, Power cordx1 and Thunderboltx1 cables are included.

    4To download the latest version of the LG Switch app, visit LG.com


    Images may be simulated and dramatized for illustrative purposes. Actual features, functionality, and other product specifications may differ and are subject to change without notice. Prices, promotions, and availability may vary by model, store, and online. Prices subject to change without notice. Quantities are limited. Check with your local retailers for their final price and availability.

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