# LG UltraFine 40U990A 40-inch Curved 5K2K Monitor

The LG UltraFine 40U990A-W.AEK is a curved 40-inch ultrawide monitor with a listed 5120 x 2160-pixel resolution and 120 Hz refresh rate. Its wide workspace, Thunderbolt 5 and claimed colour and HDR features suit demanding creative workflows, while buyers should confirm port and performance details against their particular setup.

- [Original product page](https://bargainpostbox.co.uk/product/lg-ultrafine-40u990a-40-inch-curved-5k2k-monitor)
- [View offer](https://bargainpostbox.co.uk/visit/lg-ultrafine-40u990a-40-inch-curved-5k2k-monitor)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: LG
- Model: 40U990A-W.AEK
- Category: Computers > Computer Monitors
- Price: 1149.00 GBP
- Previous price: 1399.99 GBP
- Discount: 18%
- Price checked: 2026-11-12T15:03:38.696Z
- Rating: 3.9 / 5
- Reviews: 4

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- 5120 x 2160 resolution across a 21:9 screen gives creative applications and multitasking a broad workspace.
- The listing states a 120 Hz refresh rate, 5 Milliseconds response time and FreeSync Premium for gaming and fast-moving content.
- Thunderbolt 5 is claimed, alongside HDMI and DisplayPort connectivity, a built-in KVM and speakers.
- A curved matte panel and listed height, tilt and swivel adjustments provide options for desk positioning.

## Pros

- The 40-inch 21:9 format offers substantial horizontal workspace for editing timelines and multiple application windows.
- The listing combines 120 Hz refresh with FreeSync Premium, making the monitor relevant to both work and gaming.
- Thunderbolt 5, built-in KVM and listed USB and video connections may help consolidate a multi-device desk setup.

## Specifications

### Identity
- Brand: LG
- Model: 40U990A-W.AEK
### Display and video
- Screen size: 40 Inches
- Screen technology listed: IPS
- Resolution: 5120 x 2160 Pixels
- Resolution description: 5K UHD Ultra Wide 2160p
- Aspect ratio: 21:9
- Screen surface: Matte
- Contrast ratio: 2000:1
- Refresh rate: 120 Hz
- Response time: 5 Milliseconds
- Brightness: 450 Candela per Square Meter
- Colour gamut value: 99.0
- Picture enhancement technologies: AMD FreeSync Premium, DisplayHDR 600, HDR10, HW Calibration Ready
- Adaptive sync: FreeSync Premium
### Connectivity and features
- HDMI ports: 2
- USB ports: 6
- USB 3.0 ports: 4
- Connectivity listed: DisplayPort, Ethernet, HDMI, USB Type C
- Hardware connectivity listed: DisplayPort, HDMI, Headphone, Thunderbolt, USB Type C
- Product features listed: Built-in KVM, DisplayHDR 600, Thunderbolt 5, Tilt/Height/Swivel Adjustments, Ultrawide Screen
- Power consumption: 40 Watts
### Dimensions and installation
- Form factor: Curved
- Mounting types listed: Desk Mount, Wall Mount
- Dimensions: 26D x 94.8W x 61.4H centimetres
- Weight listed: 14.1 Kilograms
### Warranty
- Warranty listed: 2 Years Manufacturer Warranty

## Before you buy

- The listing is inconsistent about panel terminology, describing Nano IPS Black in the title and features while a technical field says IPS. HDR naming, FreeSync Premium versus FreeSync Premium Pro, DCI-P3 99% versus the numeric gamut field, port totals versus listed connector types, and speaker descriptions also vary. Treat these as unconfirmed listing details and check the selected model's specifications and your required connections before buying.

## A good fit for

- Video editors, designers and other users who want a wide, high-resolution workspace.
- People seeking a large curved monitor for a combination of creative work and gaming.
- Laptop users considering a Thunderbolt-based desk setup, subject to confirming host compatibility and charging requirements.

## Less suited to

- Buyers who need confirmed port counts or a fully consistent panel, HDR and colour specification without checking the listing further.
- Shoppers with limited desk space or who prefer a smaller display.

## Customer feedback

The supplied evidence contains aggregate ratings but no customer-comment summary. The ratings are split between five-star and one-star categories, so they do not establish a clear or reliable account of satisfaction, strengths or problems. With only a small stated sample, use them cautiously and judge the monitor against the listed resolution, refresh rate and connectivity requirements.

## Frequently asked questions

### What resolution does the LG UltraFine 40U990A list?
The technical details give a maximum resolution of 5120 x 2160 Pixels and also describe it as 5K UHD Ultra Wide 2160p.
### Is this monitor suitable for gaming?
The listing specifies 120 Hz, 5 Milliseconds response time and FreeSync Premium. Check that your computer and connection can support the resolution and refresh rate you want.
### Does it include Thunderbolt 5?
Thunderbolt 5 is claimed in the title and feature details, and the listing gives two Thunderbolt ports. Confirm the exact port capabilities for your intended setup.
### Can it charge a laptop over Thunderbolt?
Manufacturer copy claims 96W laptop charging over Thunderbolt 5, but the supplied technical details do not confirm this in a consistent specification table. Verify the charging capability for the exact model before relying on it.

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## Images

![LG UltraFine 40U990A 40-inch Curved 5K2K Monitor — 1](https://bargainpostbox.co.uk/i/iQqIw1M0JM8ZFz-vRgRe-Ojt-Mgg7XK4wXEUqO6NK8jgya6vDbcN_bPeMQW4fZ5kZgnhbo0KjYdWKXuVFf8VKpl8jzjvmSiV1sEXc1cgB-t3VUwPKnJ-DtB5.jpg)

![LG UltraFine 40U990A 40-inch Curved 5K2K Monitor — 2](https://bargainpostbox.co.uk/i/IZ2Haj7z9FqTUBYuUr_Cc03BebwpJVeb5ULnRfXkjbGPvHhi4SIPWGs5LdzARgH9Dzgvy0pn_zKMLsamIQszR_FinTnxUyZ1x7X1PTqzF10BPR_LKVAB_OPF.jpg)

![LG UltraFine 40U990A 40-inch Curved 5K2K Monitor — 3](https://bargainpostbox.co.uk/i/u_g1idN1TJ-c31pq8_IVOIHLQpH01FBQ3aR6b-I7ViRn6FMKuWn0HoYwCyQfHfnpetLWVFtlQYctjA31SKeuZPhqD6VuJVq8n0zk81yZv1qTmtFJTSLMUGsm.jpg)

![LG UltraFine 40U990A 40-inch Curved 5K2K Monitor — 4](https://bargainpostbox.co.uk/i/84xFS5PGXuPUX83iPws5Srac0mCBAecRoz6QEvdtkypB47hpfyvxMKhET8z7hW0RClfWkReDGWePLXcgghZPwhOFh_2-q5tVLyYlTff6e45xhXeR3Q7MtOgp.jpg)

![LG UltraFine 40U990A 40-inch Curved 5K2K Monitor — 5](https://bargainpostbox.co.uk/i/3Qc7GBETuo2Dht0dBO3r45oXrIqnTGxVVFyWDU1WO5G3g6bHb7zhDmYPpqY7ii17XP4DyUlJrRy665_mjRzLgt_xOwSiXS9gU9vIiMM2xVtg8tv4JaXe57zB.jpg)

![LG UltraFine 40U990A 40-inch Curved 5K2K Monitor — 6](https://bargainpostbox.co.uk/i/88ENkgKQ4bDKCyAczy9HZdm6Q3O5YxL7uLn7vAu9ze-x6BDNnzdb7o6bync92WZRvt1GzwP8avuPdX-Sq7P1aALfzj8HvB4jS0Z1ClGJaG4rlm45dpI4XAmf.jpg)

![LG UltraFine 40U990A 40-inch Curved 5K2K Monitor — 7](https://bargainpostbox.co.uk/i/dwbeppWrLlmJPRG_nUAJrwDa5zKudgpMUQF5nnw-sXUxx-GM6WKWHvR3CKCko9U-LaV5hQFGpynyU1ixQJFxtyTlluWc1ngmE0SIbTJn1X3U9GRtuOD5z48K.jpg)