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Monitor LG 40U990A-W 4K Ultra HD - Black - F

Not AvailableMonitor LG 40U990A-W 4K Ultra HD - Black - F

The LG 40U990A-W monitor is a professional device designed for users who require an advanced and w...

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Screen Size
21232425262729313234373940454950
Colour
BlackBlueGreyPurpleWhite
Display Type
2K Ultra HD4K Ultra HD5K Ultra HDFull HDHDHD+

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Product Information

Full details

The LG 40U990A-W is a professional-grade 40-inch ultrawide monitor designed for creative professionals, developers, and users demanding superior visual fidelity and expansive screen real estate. Its key benefit lies in the 5K2K resolution and Nano IPS Black panel, providing exceptional sharpness, accurate color, and deep contrast. A potential caveat is its higher energy consumption compared to lower-tier models, reflected in its F energy efficiency class.

All features

ColourBlack
Energy EfficiencyF
Screen Size40
Display Type4K Ultra HD
Model Part Number40U990A-W
BrandLG

Extended Product Information

FAQs

What is the main advantage of the 5K2K resolution?

The 5K2K (5120 x 2160) resolution on this 40-inch ultrawide monitor provides significantly more pixels than standard 4K, offering an expansive workspace perfect for multitasking, detailed graphic design, video editing, and programming.

Does this monitor support fast refresh rates for gaming?

Yes, the monitor features a 120 Hz refresh rate and supports AMD FreeSync Premium, which helps to reduce screen tearing and stuttering, making it suitable for high-end gaming and smooth motion display.

How does Thunderbolt™ 5 benefit me?

Thunderbolt™ 5 offers high-speed data transfer, up to 96W power delivery for charging compatible laptops, and the ability to connect multiple high-resolution displays through a single cable, simplifying your setup and enhancing workflow efficiency.

Is this monitor suitable for professional color-critical work?

Absolutely. With its Nano IPS Black panel, 99% DCI-P3 color gamut coverage, 2000:1 contrast ratio, and VESA DisplayHDR 600 certification, it provides exceptional color accuracy and visual depth required for professional photo editing, graphic design, and video production.

What is the energy efficiency rating, and what does it mean?

The monitor has an energy efficiency class of F. This rating indicates its power consumption relative to other displays, meaning it consumes more energy than models with higher ratings (like A or B). Its typical power consumption is 40W (SDR).

Can I connect multiple devices to this monitor?

Yes, the monitor offers extensive connectivity options including two HDMI 2.1 ports, a DisplayPort 2.1, and multiple USB-C ports (supporting data transfer and charging), allowing you to connect various devices like laptops, cameras, and external drives.

Is the screen curved?

Yes, this monitor features a 2500R curvature, designed to provide a more immersive viewing experience and reduce eye strain by keeping the entire screen within your field of vision.

What are the VESA mounting capabilities?

The monitor supports a standard 100 x 100 mm VESA mount, allowing you to attach it to compatible monitor arms or wall mounts for flexible positioning and desk space optimization.

Troubleshooting

No image displayed on the screen

Ensure the power cable is securely connected to both the monitor and the power outlet. Check that the video cable (HDMI, DisplayPort, Thunderbolt) is firmly connected to both the monitor and your computer. Verify that the correct input source is selected on the monitor's OSD menu. Try a different cable or port if possible.

Screen flickering or distorted image

Check all video cable connections for looseness. Ensure your graphics card drivers are up to date. Lower the display resolution or refresh rate in your operating system's display settings to see if the issue persists. If using FreeSync, ensure it's enabled correctly in both monitor and graphics card settings.

Colors appear inaccurate or washed out

Adjust the color settings using the monitor's OSD menu. Ensure the correct color profile is selected in your operating system. If working with specific color standards, consider hardware calibration using compatible tools. Check if HDR is enabled and if the content supports it.

Thunderbolt™ 5 or USB-C connection not working (no data, charging, or display)

Confirm that your computer and the Thunderbolt™ 5/USB-C cable support the required standards (e.g., Thunderbolt™ 5, DP Alt Mode). Ensure your system's Thunderbolt™ or USB-C drivers are up to date. Try disconnecting and reconnecting the cable. Test with another compatible device if possible.

Monitor won't turn on

Verify the power adapter is correctly connected. Try plugging the power adapter into a different wall outlet. If the issue persists, contact customer support.

Pros and Cons

Pros

  • Exceptional 5K2K resolution for unparalleled detail and workspace.
  • Superior color accuracy (99% DCI-P3) and contrast ratio (2000:1) for professional work.
  • Advanced Thunderbolt™ 5 connectivity simplifies setup and enables high-speed data transfer and charging.
  • High refresh rate (120 Hz) and fast response time for fluid visuals.
  • Versatile port selection accommodates a wide array of devices.

Cons

  • Energy efficiency class F may lead to higher power consumption.
  • Curved screen (2500R) might not be preferred by all users for professional tasks.
  • The advanced features may result in a higher price point.
  • Large physical footprint may require significant desk space.
  • Built-in speakers are present but may not replace dedicated audio solutions for critical work.

Setup, Compatibility & Care

Setup:

  1. Unpack and Assemble Stand: Carefully remove the monitor and accessories from the packaging. Attach the monitor to the included stand according to the setup guide. Ensure all connections are secure.
  2. Connect Power: Connect the external power supply to the monitor and a suitable power outlet.
  3. Connect Video Source: Utilize the included cables (DisplayPort, HDMI, or Thunderbolt™ 5/USB-C) to connect the monitor to your computer or other devices. For optimal performance, use DisplayPort 2.1 or Thunderbolt™ 5 where available.
  4. Connect Peripherals (Optional): Connect USB devices to the monitor's USB-C ports for data transfer and charging if your device supports it.
  5. Power On: Turn on the monitor using the power button.

Compatibility:

  • Operating Systems: Compatible with Windows, macOS, and Linux operating systems. For full functionality of features like Thunderbolt™ 5 and high resolutions/refresh rates, ensure your system's graphics card and ports support the required standards (e.g., DisplayPort 2.1, Thunderbolt™ 5).
  • Resolution & Refresh Rate: Supports resolutions up to 5120 x 2160 at 120 Hz. Check your computer's graphics capabilities to ensure it can drive this resolution and refresh rate.
  • HDR: Compatible with HDR10 and VESA DisplayHDR 600. Ensure your content and operating system are configured for HDR viewing.
  • FreeSync: Supports AMD FreeSync Premium for smooth, tear-free gaming. Compatible with most modern AMD and NVIDIA graphics cards.

Care:

  • Cleaning: For regular cleaning, use a soft, dry, lint-free cloth. For stubborn smudges, slightly dampen the cloth with water or an approved screen cleaner. *Never spray liquid directly onto the screen*. Avoid using abrasive cleaners or solvents.
  • Ventilation: Ensure the monitor is placed in a well-ventilated area and that the vents are not obstructed to prevent overheating.
  • Handling: Handle the monitor with care, especially when moving it. Avoid applying excessive pressure to the screen.
  • Power Management: Utilize the monitor's intelligent energy-saving system and set appropriate sleep timers to reduce power consumption when not in use.