LG UltraFine 40U990A-W 40" 5120x2160 IPS Black 120Hz FreeSync Thunderbolt 5 Curved Ultrawide Gaming Monitor
Product Technical Specification
| Lighting | |
| Lighting / RGB | No |
| Efficiency Class | |
| EU Energy Efficiency Class | F |
| Webcam | |
| Webcam | No |
| Standards / Specifications | |
| Adaptive Sync Technology (G-SYNC / FreeSync) | AMD FreeSync Premium |
| Standard / specification | HDMI 2.1, DisplayPort 2.1 |
| Colour | |
| Primary Colour | White |
| Dimensions | |
| Length / Depth | 260 mm |
| Width | 947.7 mm |
| Height | 614.3 mm |
| Width (without stand) | 947.7 mm |
| Depth (without stand) | 106.3 mm |
| Height (without stand) | 419.8 mm |
| Weight | 14.1 kg |
| Weight (without stand) | 9.2 kg |
| Speakers | |
| Speakers | Yes |
| Display | |
| Display Size in Inch | 40 " |
| Display Resolution | WUHD (5120 x 2160 Pixel) |
| Display Aspect Ratio | 21:9 |
| Display Refresh Rate | 120 Hz |
| Display Panel Type | Nano IPS |
| Colour depth | max. 1.07 billion colours (10 bit) |
| Colour space | 99% DCI-P3 |
| Contrast Ratio (Static) | 2000:1 |
| Curved Display | Yes |
| Curved Display Radius | 2500R |
| Display Response Time | 5 ms |
| Display Response Time (Grey-to-Grey) | 5 ms |
| HDR | Yes |
| HDR Standard | HDR10, VESA DisplayHDR 600 |
| Screen Brightness SDR / normal | 450 cd/m² |
| Viewing angle | 178° horizontal / 178° vertical |
| Touchscreen | No |
| Ergonomics | |
| Height adjustment | Yes |
| Min. Swivel | -20 ° |
| Max. Swivel | 20 ° |
| Min. Tilt | -5 ° |
| Max. Tilt | 20 ° |
| Power Supply | |
| Power Supply Position | Internal |
| Connectivity | |
| Peripheral connectors | RJ-45 (1x), 3.5 mm jack 3-pole, TRS (1x), USB 3.2 Typ-A (2x) |
| External Ports | |
| Display Connectors | HDMI (2x), Display Port (1x), Thunderbolt 5 (2x) |
| Display Connector Standards | HDMI 2.1, DisplayPort 2.1 |
| USB Hub | Yes |
| Mounting | |
| Vesa standard | 100 x 100 mm |
Delivery Options
Economy Delivery (UK)
Business Express
LG UltraFine 40U990A-W 40" Nano IPS Black monitor with 5K2K resolution and Thunderbolt 5.
LG UltraFine 40U990A-W 40" 5K2K Curved Gaming Monitor at a Glance:
- 40” curved ultrawide monitor with 5K2K resolution
- Nano IPS Black panel technology
- Supports Thunderbolt 5 connectivity for 96W charging and 80Gbps data transfer
- VESA DisplayHDR 600 and DCI-P3 99% for vibrant colour reproduction
- AMD FreeSync Premium to reduce ghosting and screen tearing
- Two 10W speakers with rich bass
First Thunderbolt 5K2K Monitor
The LG UltraFine 40U990A-W 40" 5K2K Curved Gaming Monitor is at the bleeding-edge of display technology. This 40” screen has a 2500R curvature and harnesses an IPS Black panel for vibrant visual reproduction that fills your peripheries. What sets this monitor apart is the 5K2K resolution and native support for Thunderbolt 5.
With a 5120x2160 resolution, the LG UltraFine 40U990A-W 40" 5K2K Curved Gaming Monitor offers up to 33% more pixels than standard 4K UHD displays. This provides a wider canvas to view your content, set programs side-by-side, and optimise your screen real estate. With such an impressive resolution, all displays have wonderful visual clarity, making this an excellent monitor for gaming and creative work.
The LG UltraFine 40U990A-W 40" 5K2K Curved Gaming Monitor is equipped with a range of connectivity options, including HDMI 2.1, DisplayPort 2.1, and USB-C downstream. The native Thunderbolt 5 support is a game changer, as it facilitates the 5K2K display, 96W charging for your laptop, and 80Gbps data transfer. All through a single cable! What’s more, the extensive connectivity options allow you to daisy-chain multiple monitors effortlessly.
Smooth Visuals
The LG UltraFine 40U990A-W 40" 5K2K Curved Gaming Monitor is packed with features to enhance your visuals and ensure buttery smooth gaming. The 120Hz refresh rate and 5ms (GTG) response time facilitate fluid frame rates, reducing stuttering and blur as you play the latest cinematic AAA titles. Plus, support for AMD FreeSync Premium means this monitor can match your GPU output to eliminate ghosting and screen tearing.
High Contrast, Vibrant Colour
Thanks to the IPS Black panel technology, the LG UltraFine 40U990A-W 40" 5K2K Curved Gaming Monitor is well-suited for creative work. This monitor displays images with a high 2000:1 contrast, for richer and deeper shadows. Colour is accurately reproduced, with the DCI-P3 99% coverage providing 1.06 billion colours to work with. This monitor is also VESA certified DisplayHDR 600, meaning brighter highlights, enhanced textures, and more natural light and shadows, giving your gaming and creative work authentic colour.
Speakers
The LG UltraFine 40U990A-W 40" 5K2K Curved Gaming Monitor comes equipped with a premium audio solution. There are two 10W speakers, engineered for warm bass notes and crystal-clear highs. Utilising Rich Bass technology, you can enjoy an immersive soundscape whether you’re gaming or watching the latest blockbuster film.
LG Switch App
To optimise both work and play, the LG UltraFine 40U990A-W 40" 5K2K Curved Gaming Monitor is compatible with the LG Switch app. This software allows you to customise the display to your preferred image quality, brightness, and contrast for a variety of uses. What’s more, you can split your screen into eleven areas to maximise your screen real estate while working. There are even hotkeys you can map for easy, one-touch functionality on launching vital applications.
Ergonomics
To ensure a comfortable experience, the LG UltraFine 40U990A-W 40" 5K2K Curved Gaming Monitor has a range of ergonomic features. The screen, itself, is TÜV Rheinland certified using the 5-Star Eye Comfort rating. This means the monitor has a high refresh rate, accurate colour, and low blue light technology, which all help to reduce eye strain and fatigue.
Physically, you can adjust the LG UltraFine 40U990A-W 40" 5K2K Curved Gaming Monitor to properly align with your set-up. The sleek, borderless design with an L-shaped stand integrates effortlessly with your desktop, while the white finish adds a modern touch. The monitor can then be adjusted to swivel by 20° both left and right, tilt 5° forward and 20° backward, and increase the height by 130mm.
| Lighting | |
| Lighting / RGB | No |
| Efficiency Class | |
| EU Energy Efficiency Class | F |
| Webcam | |
| Webcam | No |
| Standards / Specifications | |
| Adaptive Sync Technology (G-SYNC / FreeSync) | AMD FreeSync Premium |
| Standard / specification | HDMI 2.1, DisplayPort 2.1 |
| Colour | |
| Primary Colour | White |
| Dimensions | |
| Length / Depth | 260 mm |
| Width | 947.7 mm |
| Height | 614.3 mm |
| Width (without stand) | 947.7 mm |
| Depth (without stand) | 106.3 mm |
| Height (without stand) | 419.8 mm |
| Weight | 14.1 kg |
| Weight (without stand) | 9.2 kg |
| Speakers | |
| Speakers | Yes |
| Display | |
| Display Size in Inch | 40 " |
| Display Resolution | WUHD (5120 x 2160 Pixel) |
| Display Aspect Ratio | 21:9 |
| Display Refresh Rate | 120 Hz |
| Display Panel Type | Nano IPS |
| Colour depth | max. 1.07 billion colours (10 bit) |
| Colour space | 99% DCI-P3 |
| Contrast Ratio (Static) | 2000:1 |
| Curved Display | Yes |
| Curved Display Radius | 2500R |
| Display Response Time | 5 ms |
| Display Response Time (Grey-to-Grey) | 5 ms |
| HDR | Yes |
| HDR Standard | HDR10, VESA DisplayHDR 600 |
| Screen Brightness SDR / normal | 450 cd/m² |
| Viewing angle | 178° horizontal / 178° vertical |
| Touchscreen | No |
| Ergonomics | |
| Height adjustment | Yes |
| Min. Swivel | -20 ° |
| Max. Swivel | 20 ° |
| Min. Tilt | -5 ° |
| Max. Tilt | 20 ° |
| Power Supply | |
| Power Supply Position | Internal |
| Connectivity | |
| Peripheral connectors | RJ-45 (1x), 3.5 mm jack 3-pole, TRS (1x), USB 3.2 Typ-A (2x) |
| External Ports | |
| Display Connectors | HDMI (2x), Display Port (1x), Thunderbolt 5 (2x) |
| Display Connector Standards | HDMI 2.1, DisplayPort 2.1 |
| USB Hub | Yes |
| Mounting | |
| Vesa standard | 100 x 100 mm |
Buykingston order despatch times:
We will despatch your order the very same day if we receive cleared payment by 12:00 pm Mon-Fri.
These delivery estimates apply when you order up to 12:00 pm Mon-Fri (excluding public holidays).
We charge a one off delivery cost as outlined below regardless of how many items you order or the weight of your order.
Estimated delivery times are provided to us by the respective delivery companies. We pass this information onto you, the customer.
Despatch times do not apply to UK public holidays.
Estimated delivery times are taken from the next available working day available for delivery. For example if an order was despatched on a working Wednesday by 3pm, the first available working day for delivery would be Thursday provided you placed your order by 3pm on the Wednesday. If the next available weekday is a UK bank holiday/public holiday then your order will be despatched on the next available working day.
Our warehouse reserves the right to upgrade the delivery method you select on your order.
Our available delivery options*
Contact us for a shipping quote.
*All delivery times are estimated unless stated.
Product Returns Note
Buykingston offers a simple, hassle-free returns policy. If for whatever
reason you are not happy with the item purchased, you can return it to us
within 14 days of receipt for a refund. This applies to items purchased
direct through Buykingston only.
Our 14 Day Returns Money Back Guarantee:
For items returned in resaleable condition, with all original packaging. If
an item has been opened for inspection but shows signs of use beyond that, a
deduction may apply to reflect the reduced value — see our full
Terms & Conditions
(Section 12) for details.
Some items are excluded from our money-back guarantee unless they have developed a fault. These include:
- Headphones
- Earphones
- Custom made and designed products, such as flash memory products with
custom logos on them, e.g. USB flash drives and memory cards with your own
logo
Returns FAQs
What is your returns criteria?
14 days from date of receipt, or expected date of receipt on non-tracked
items.
How do I go about returning my order?
Please contact us
via our contact page with your order number. We will provide you with an RMA
number and return instructions, including your return deadline and whether a
freepost label applies to your order.
Do I need to contact you before returning my order?
Yes, to obtain an RMA number before sending anything back.
Does my item have to include its original packaging?
Yes, to qualify for our 14 day money-back guarantee. For faulty items, we
understand you may no longer have the original packaging.
Who pays for return postage?
If your item is faulty, damaged, or not as described, we cover reasonable
return postage, or provide a freepost label where available. If you are
returning an item for another reason (including simply changing your mind),
you are responsible for return postage unless we have expressly confirmed a
freepost label in your RMA email — we recommend using a tracked and
insured service for items of significant value.
Who deals with the warranty on a faulty item?
We will. In some circumstances we may ask you to contact the manufacturer
directly for assistance.
Please ensure you have read and comply in full with Sections 11–13 of our Terms & Conditions.