If you want to redefine your entire desk setup, meet the LG 40U990A-W 40-inch ultra-wide nano IPS black monitor with Thunderbolt 5 might be what you are looking for. The monitor boasts 5120×2160 pixels with a maximum refresh rate of 120Hz and features a gentle 2500R curve.

The stunning 5K2K (5120×2160) Wide Ultra High Definition (WUHD) resolution, along with the curved (2500R) display, makes the LG monitor a complete command center for editors and creators, delivering an unparalleled viewing experience. The monitor’s sleek white design adds to its aesthetic appeal, making it a stylish addition to any workspace.
The LG 40U990A-W Curved Monitor
The LG 40U990A-W features a stunning 40-inch IPS WUHD 5120×2160 @120Hz (5ms) curved display with DisplayHDRâ„¢600 for more accurate color representation, making this monitor ideal for creative professionals. The 21:9 aspect ratio display (5120×2160) Nano IPS display delivers 33% more pixels than standard 4K UHD (3840×2160) monitors, making it the ideal setup for content creators, multitaskers, and gamers. However, this monitor is limited to 120Hz, so it might not be the ideal option for avid gamers.
The gentle 2500R curved display provides an immersive viewing experience, and is not only great for gaming or watching videos or movies, but it also stands out for photo editing, video professionals, and content creators. Along with the DisplayHDR 600, the LG 40U990A-W boasts a 2000:1 contrast ratio, which is twice that of traditional IPS monitors, and covers 99% of the DCI-P3 color gamut, providing enduring, vivid visuals and deeper blacks.
Features of the LG 40U990A-W
Equipped with a Nano IPS 21:9 aspect ratio display, the monitor offers a wide color gamut and excellent color accuracy, making it ideal for professional tasks such as graphic design and photo editing. The monitor also features HDR support, allowing you to enjoy your favorite videos, movies, and games in stunning clarity and detail.
I have found that the monitor’s most notable feature is for photo editing and content creation (videos). I also have a 32″ OLED, and the extra width with this monitor is very beneficial and more productive.
In addition, the monitor comes with a variety of connectivity options, including HDMI 2.1, DisplayPort (DP) 2.1, LAN (RJ45), headphone jack, and USB-C ports (10Gbps), allowing you to easily connect all your devices, such as laptops, cameras, tablets, and storage devices, with versatile ports like Thunderbolt 5.

Thunderboltâ„¢ 5 offers data transfers (80Gbps) that are twice as fast to connected devices compared to previous versions and allows for charging up to 96W through a single cable, ensuring stability, scalability, and security. You can read more about the Thunderbolt technology here.
It also includes a KVM switch for better multitasking and efficiency. You can easily share a single keyboard, mouse, and USB peripherals between two PCs. The monitor also supports picture-in-picture (PIP) and picture-by-picture (PBP) modes.
For gamers, the display might be limited to a maximum of 120Hz, but the monitor features a variable refresh rate (VRR), AMD FreeSync Premium, ensuring a low-latency, tear and stutter-free gaming experience, Dynamic Action Sync (DAS) for reduced input lag, picture-by-picture (PBP), and the Black Stabilizer increases the contrast and can make it easier to detect enemies hiding in dark areas. The Black technology boosts the standard IPS contrast ratio from 1000:1 to 2000:1, providing deeper blacks and richer shadows, as well as vibrant colours and sharper details from edge to edge.
It also features built-in dual 10W speakers, which are what you would expect from a monitor’s output (not much), but the sound quality is probably not the primary reason you’re buying this monitor.
Specifications of the LG 40U990A-W

You can use the included sleek L-shaped adjustable stand that features tilt (-5°〜20°), height up and down 5.12″ (130mm), and swivel (-20°〜20°) with a 100×100 mm VESA option. The two parts just slide together, and the base is screwed tight using the two provided screws. Furthermore, once assembled, simply push the monitor stand in from the top, and it will easily clip into place, securing the stand to the monitor. You can easily remove the stand by pushing down on the button located below the VESA area and pulling upwards simultaneously.
The monitor could be slightly larger than you might expect. With the stand, the dimensions are (WxHxD) 37.3″ x 24.19″ x 10.24″, and without the stand, they are 37.3″ x 16.53″ x 4.19″. The assembled stand height is 17 5/8″, and the base plate size is square-shaped and is approximately 1/8″ thick, 10 1/2″ wide, and 10 1/4″ long.
It weighs 31.09 pounds (14.1 kg) with the stand and 20.28 pounds (9.2 kg) without the stand, making it suitable for most desks. Alternatively, you can use the 100x100mm VESA mounting option, provided it supports the size and weight.
The monitor comes complete with one DP cable, one HDMI cable, one USB-C cable, one power cord, and one Thunderbolt cable.
Connectivity of the LG 40U990A-W
- DisplayPort: Yes (1)
- DP Version: 2.1 (UHBR 13.5)
- HDMI: Yes (2)
- Built-in KVM: Yes (1)
- LAN (RJ-45): Yes (1)
- Headphone out: Four-pole (Mic & Sound)
- Thunderbolt: One in and one out (96W)
- USB-C: Up (1) / Down (4)
- USB Downstream Port: USB-C – Four (15W*1EA, 4.5W*3EA) 10Gbps / USB-A – Two 10Gbps
- USB Upstream Port: Yes (via Thunderbolt & USB-C 10Gbps)
- USB-C (Data Transmission): Yes
Setup and Options
The LG 40U990A-W offers numerous customization options, allowing you to tailor the setup to your preferences and needs. Simply press the “joystick” button, located in the middle of the monitor under the LG logo, to quickly and easily set things up to your preferences.
Without delving into all the setting options for each individual setting, we will review the custom options available with this monitor.
In quick settings, you can quickly adjust the brightness settings, contrast, volume, picture-by-picture (PBP), picture-in-picture (PIP), and USB options.
In picture mode, you can choose from a variety of display options, including Personalized Picture (install the LG switch), Custom, Vivid, HDR Effect, Reader, Cinema, sRGB, DCI-P3, FPS (first-person shooter), RTS (real-time strategy), and Color Weakness to distinguish red and green colors better for people who have problems seeing colors.
In the input list, you can choose HDMI 1, HDMI 2, DisplayPort (DP), and Thunderbolt.

Why the LG 40U990A-W is the Ultimate 5K2K Monitor
The LG 40U990A-W earned TÜV Rheinland’s 5-Star Eye Comfort certification for better eye comfort for long periods of screen use. It uses a combination of precise colour accuracy, refresh rate (120Hz), and integrated low blue light technology and software tuning to minimise harmful emissions, and reduces eye strain while maintaining color accuracy.
Whether you are a content creator, professional photo editor, or avid gamer, this monitor offers everything you need to enhance your viewing and productivity, all in one place.
The monitor is a top-of-the-line 2500R curved monitor that offers unmatched performance, display quality, and a compact, sleek design. If you are looking for a monitor that combines style and functionality, the LG 40U990A-W could be the perfect choice.