LG 27US550-W computer monitor 68.6 cm (27 inch) 3840 x 2160 pixels 4K Ultra HD LCD White

The LG 27US550-W 27" 4K Ultra HD LCD monitor offers a 27-inch IPS panel with a native resolution of 3840 x 2160 pixels, providing sharp detail and accurate color reproduction for work and media. The screen uses LCD technology with a pixel pitch of 0.155 x 0.155 mm and a typical brightness of 300 cd/m². With a 16:9 aspect ratio and flat screen shape, the monitor is suitable for standard desktop setups. The display supports wide viewing angles of 178° horizontally and vertically and delivers a typical contrast ratio of 1000:1. The unit includes height adjustment to help achieve an ergonomic viewing position. Available in white and black finishes, it combines a neutral aesthetic with practical features required for daily computing tasks.

Advantages

The IPS panel and 4K Ultra HD resolution ensure high pixel density and consistent color across wide viewing angles, useful for photo editing, content consumption and multitasking. A 5 ms response time balances motion clarity with color fidelity for general multimedia use. Typical brightness of 300 cd/m² and a 1000:1 contrast ratio provide readable images in most indoor lighting conditions. Built-in height adjustment improves ergonomics and reduces neck strain during extended use. The combination of compact 27-inch size and 4K resolution offers a balance between desktop space and visual clarity.

Suitable for

• Office productivity and spreadsheet work
• Image and video viewing, basic photo editing
• Multitasking with multiple windows and applications
• Watching 4K video content and streaming
• Home desktop setups requiring ergonomic height adjustment

Key specifications

• Display diagonal: 27 inches
• Resolution: 3840 x 2160 (4K Ultra HD)
• Panel type: IPS (In-Plane Switching)
• Display technology: LCD
• Pixel pitch: 0.155 x 0.155 mm
• Response time: 5 ms
• Typical contrast ratio: 1000:1
• Typical brightness: 300 cd/m²
• Viewing angles: 178° horizontal / 178° vertical
• Screen shape: Flat
• Energy efficiency class (SDR): F
• Energy consumption (SDR) per 1000 hours: 26 kWh
• Product colour: White, Black

How to use

Place the monitor on a stable desk surface and adjust the height to align the top third of the screen with eye level for comfortable viewing. Connect to your device using a compatible video interface supported by your graphics card to achieve 3840 x 2160 resolution; ensure cable and source settings are configured for 4K output. Use the on-screen display menu to set brightness, contrast and color settings according to your ambient lighting and visual preferences. For best results with photo or video work, allow the display to warm up for a few minutes and use calibrated color profiles when available.

Recommendations

For prolonged use, enable ergonomic desk setup practices: maintain an appropriate viewing distance (typically 50–70 cm for a 27" screen), adjust height and tilt to reduce glare, and take regular breaks to minimise eye strain. When working on color-sensitive tasks, use an external hardware or software calibration tool and ensure the source device outputs native 4K resolution and appropriate color depth.