27" 4K UHD UltraFine™ IPS monitor

27US550-W

Rear view of the LG Monitor 27US550 in a white finish, illustrating the port specifications including DP-IN, dual HDMI™ ports, and a headphone (H/P) jack.

LG Monitor 27US550 in a white finish displaying product dimensions of the 27-inch Display, measuring 613.5 mm width, 363.5 mm display height, 539.2 mm total height, and 253.2 mm depth.

LG Monitor 27US550 delivering impressive colors thanks to HDR 10 support and 90% DCI-P3 color gamut for a clearer display.

LG Monitor 27US550 demonstrating the clarity of the UHD 4K IPS Display with 8.29 million pixels, shown in comparison to Full HD resolution.

LG Monitor 27US550 showcasing the ergonomic design with features including Tilt, Height adjustment, Swivel, and Pivot rotation for simple and comfortable use.

LG Monitor 27US550 showcasing the rapid switching capabilities of the LG Switch App between virtual wallpaper, smart screen split, scheduler management, and video calls.

LG Monitor 27US550 in a white design positioned on a desk, displaying photo editing software with high color precision for professional image editing.

LG Monitor 27US550 showing an overview of all included components, including the monitor body, stand parts, manual, power adapter, and HDMI and DP cables.

Key Features

27” UHD 4K (3840x2160) IPS display
HDR10, DCI-P3 90% (Typ.)
Brightness 300nits upgrade
3-side Virtually Borderless
LG Switch

Details mastered

En el escritorio, hay un monitor ultrafino que muestra trabajos de Photoshop. Junto al monitor, hay una lámpara de escritorio, un mouse, papel y lápices de colores.

*Images have been simulated to enhance feature understanding, and may differ from actual use experience.

Enjoy your creativity

Experience stunning visual clarity and vibrant colors with the LG UHD monitor. UltraFine™ supports 4K resolution, 90% DCI-P3, over 300nits brightness, and a 3-side borderless design that provides an efficient workstation for illustrators, photographers, and video editors.

Display

27” UHD 4K (3840x2160)

IPS (178° Wide view)

Image quality

HDR10

DCI-P3 90% (Typ.)

300nits brightness

Feature

3-side Virtually Borderless Design

Tilt, height, swivel and pivot adjustment

HDR 10 with DCI-P3 90%

See amazing colours

HDR technology is now applied to various content. Our monitor is compatible with industry standard HDR10 (High Dynamic Range), based on the DCI-P3 90% colour gamut, supporting specific levels of colour and brightness that enable viewers to enjoy the dramatic colours of the content.

La pantalla contiene varios colores que representan UHD 4K y, en la esquina inferior izquierda, hay un logotipo que indica HDR y DCI-P3 90 %.

*Images have been simulated to enhance feature understanding, and may differ from actual use experience.

*Brightness: 300nits (Typ.), Color Gamut: DCI-P3 90% (Typ.).

On the left is an FHD image, and on the right is a 4K UHD image.

UHD 4K

Clarity with
8.29 million pixels

Enjoy vivid and accurate color expression, thanks to UHD 4K.

*Images have been simulated to enhance feature understanding, and may differ from actual use experience.

Ergonomic design

Easy and comfy

The 3-side thin bezel design with the stand's slim-flat form blends into your office or home taking up minimal space. And it allows an ideal working experience through convenient tilt, height, swivel and pivot adjustment.

モニターの傾き機能を示す画像。スクリーンを前後に調整し、人間工学的に適切な位置に設置できることがわかる。

Tilt

モニターの高さ調整機能を示す画像。スクリーンを上下に移動し、人間工学的に心地よい位置に設置できることがわかる。

Height

モニターのスイベル機能を示す画像。スクリーンを左右に回転し、柔軟に位置を変えられることがわかる。

Swivel

モニターのピボット機能を示す画像。スクリーンは回転して横向き/縦向きを切り替えることができ、さまざまな視聴方法に対応していることがわかる。

Pivot

*Images have been simulated to enhance feature understanding, and may differ from actual use experience.

LG Switch app

Switch swiftly

LG Switch app helps to optimize the monitor to your work and life. You can readily divide the whole display up to 6, change the theme design, or even launch a video call platform with a mapped hotkey.

*Images have been simulated to enhance feature understanding, and may differ from actual use experience.

*To download the latest LG Switch app, search for 27US550 in the LG.com Support Menu.

DIMENSIONS

Key Spec

Display - Size [Inch]
27
Display - Resolution
3840 x 2160
Display - Panel Type
IPS
Display - Aspect Ratio
16:9
Display - Color Gamut (Typ.)
DCI-P3 90% (CIE1976)
Display - Brightness (Typ.) [cd/m²]
300
Display - Refresh Rate (Max.) [Hz]
60
Display - Response Time
5ms (GtG at Faster)
Mechanical - Display Position Adjustments
Tilt/Height/Swivel/Pivot

All Spec

INFO

Product name
UHD
Year
Y24

DISPLAY

Aspect Ratio
16:9
Brightness (Min.) [cd/m²]
240
Brightness (Typ.) [cd/m²]
300
Color Bit
10bit (8bit+FRC)
Color Depth (Number of Colors)
1.07B
Color Gamut (Min.)
DCI-P3 86% (CIE1976)
Color Gamut (Typ.)
DCI-P3 90% (CIE1976)
Contrast Ratio (Min.)
700:1
Contrast Ratio (Typ.)
1000:1
Panel Type
IPS
Refresh Rate (Max.) [Hz]
60
Resolution
3840 x 2160
Response Time
5ms (GtG at Faster)
Size [cm]
68.4 cm
Size [Inch]
27
Surface Treatment
Anti-Glare
Viewing Angle (CR≥10)
178º(R/L), 178º(U/D)

CONNECTIVITY

DisplayPort
YES(1ea)
DP Version
1.4
HDMI
YES(2ea)
Headphone out
3-pole (Sound Only)

FEATURES

Reader Mode
YES
Black Stabilizer
YES
Color Weakness
YES
Dynamic Action Sync
YES
Flicker Safe
YES
HDR 10
YES
HDR Effect
YES
Smart Energy Saving
YES
Super Resolution+
YES

ACCESSORY

HDMI
YES
HDMI (Color/Length)
White / 1.5m

MECHANICAL

Display Position Adjustments
Tilt/Height/Swivel/Pivot
Borderless Design
3-Side Virtually Borderless Design
Wall Mountable [mm]
100 x 100 mm

POWER

AC Input
100~240V (50/60Hz)
DC Output
40W(19V/2.1A)
Power Consumption (DC Off)
Less than 0.3W
Power Consumption (Sleep Mode)
Less than 0.5W (HDMI/DP input condition)
Type
External Power(Adapter)

STANDARD

CE
YES
KC (for Rep. of Korea)
YES
UL (cUL)
YES

DIMENSIONS/WEIGHTS

Dimension in Shiping (W x H x D) [mm]
690x447x167
Dimension without Stand (W x H x D) [mm]
613.5x363.5x45.4
Dimension with Stand (W x H x D) [mm]
613.5x539.2x253.2
Weight in Shipping [kg]
7.3
Weight without Stand [kg]
4.2
Weight with Stand [kg]
6.8

SW APPLICATION

Dual Controller
YES

What are the benefits of using UHD 4K & 5K monitors?

1. Ultra-High Resolution for Crystal-Clear Image Quality

Boasting 4K (3840×2160) and 5K (5120×2160) resolutions, these monitors offer a much higher pixel count than conventional displays. This results in sharper, more detailed rendering of text, images, and videos, which makes everything on screen look incredibly clear and crisp.

2. Optimized Color Accuracy for Professional Visual Work

These monitors support advanced technologies that enhance image quality and color accuracy, making them ideal for creative professionals. They are a perfect fit for tasks like photo and video editing, graphic design, and color grading, where accurate and vibrant colors are paramount.

3. Enhanced Content Immersion

You can watch 4K content from services like Netflix, YouTube, and other streaming platforms in its native, high-quality format. The high brightness and rich contrast levels further elevate your viewing experience, making movies and TV shows more immersive and visually stunning.

4. More Screen Space

The high resolution allows you to display more content on a single screen at once. This is a big advantage for multitasking, especially for tasks such as video editing, design, coding, or research, where having multiple applications and windows open side by side can significantly improve your workflow.

Who would especially benefit from using UHD 4K & 5K monitors?

LG UHD 4K & 5K monitors are especially well-suited for users who demand precision, love high-quality content, and value efficient multitasking.

They are ideal for professionals in graphic design, photo editing, and video production, where high resolution and accurate color reproduction are crucial. The monitors' support for technologies like DCI-P3 and HDR10 enhances both convenience and visual quality. The increased screen real estate also benefits planners, developers, researchers, and finance professionals who work with multiple windows simultaneously, improving overall workflow efficiency.

For those who want to enjoy 4K content from platforms like YouTube or Netflix in its original quality, the sharp resolution and vibrant contrast provide a deeply immersive viewing experience.

In short, UHD 4K & 5K monitors offer a versatile solution, perfectly serving both professional users who need visual accuracy and general users who want to enjoy rich, detailed content.

What are the differences between OLED, IPS, and VA panels?

OLED (Organic Light-Emitting Diode)

OLED panels are a premium display technology where each pixel emits its own light. This self-emissive design allows for true blacks and an infinite contrast ratio, since pixels can be fully turned off. They also have ultra-fast response times, making them the best option for high-end gaming monitors, premium TVs, and professional video editing where colour accuracy and speed are critical.

IPS (In-Plane Switching)

IPS panels are known for their accurate colour reproduction and wide viewing angles, which keeps the image clear and consistent even when viewed from the side. This makes them a great all-purpose choice for office work, design, and gaming. Gamers especially appreciate their superior colour accuracy, as it allows them to experience the game’s visuals exactly as the developers intended.

VA (Vertical Alignment)

VA panels offer the highest native contrast ratio of all LCD types, delivering an immersive experience for movies and videos with deep blacks and rich colours. While not as fast as TN or OLED panels, their performance has improved to the point of being a great, all-around option for both casual gaming and general media consumption.