LG 21.5 inch Full HD 100Hz monitor with sRGB (2U401A)

LG 21.5 (54.61 cm) Full HD 100Hz monitor with sRGB 99% (Typ.), HDR 10, 1ms MBR

Key Features

Full HD

100Hz refresh rate

1ms Motion Blur Reduction

HDR 10 / sRGB 99% (Typ.)

Ergonomic design with -5° to 20° tilt

Dynamic Action Sync / Black Stabilizer

21.5 (54.61 cm) Full HD

Compact yet capable

Our FHD (1920x1080) screen delivers clear visuals with an sRGB 99% (Typ.) color gamut and 250 nits brightness with 3000:1 contrast ratio.

100Hz Refresh Rate

Fluid visuals.

Seamless flow.

A fast 100Hz provides a smooth frame loading in various programs. Also, you can enjoy realistic gameplay with less screen stuttering and motion blur.Feel actual combat with vivid color

Our monitor supports HDR 10 and offers 99% sRGB (Typ.) coverage, providing a wide color spectrum that enables high-fidelity color representation for an immersive gaming experience. The vivid color expression also makes it ideal for creative work, productivity tasks, and casual entertainment alike.

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.

Reader Mode

Reader Mode adjusts color temperature and luminance, supporting a suitable viewing experience for reading on a monitor..

Reader Mode adjusts color temperature and luminance, supporting a suitable viewing experience for reading on a monitor.

Comparison image of the right side with flicker safe applied and the left side without flicker safe applied.

Flicker Safe

Flicker Safe reduces invisible flickering on the screen, providing a comfortable view.

Ergonomic design

The L-shaped stand with a square base enhances space efficiency and keeps the workspace organized. Its stable design improves visual focus and supports a -5° to 20° tilt, helping you adjust the screen for better comfort and viewing alignment.

Specification:

INFO

Product name

PC Monitor

Year

2025

DISPLAY

Size [Inch]

54 cm (21.5)

Aspect Ratio

16:9

Panel Type

VA

Resolution

1920 x 1080

Pixel Pitch [mm]

0.2493(H) × 0.241(V) mm

Color Depth (Number of Colors)

16.7M

Viewing Angle (CR≥10)

178º(R/L), 178º(U/D)

Brightness (Typ.) [cd/m²]

250

Refresh Rate (Max.) [Hz]

100

Contrast Ratio (Typ.)

3000:1

Response Time

5ms (GtG at Faster)

Color Gamut (Typ.)

sRGB 99% (CIE1931)

Size [cm]

54

Brightness (Min.) [cd/m²]

200

Contrast Ratio (Min.)

2400:1

CONNECTIVITY

Headphone out

3-pole (Sound Only)

FEATURES

HDR 10

YES

Flicker Safe

YES

Auto Input Switch

YES

Black Stabilizer

YES

Color Weakness

YES

Smart Energy Saving

YES

Dynamic Action Sync

YES

Crosshair

YES

Reader Mode

YES

Super Resolution+

YES

VRR

YES

Motion Blur Reduction Tech.

YES

MECHANICAL

Display Position Adjustments

Tilt

Wall Mountable [mm]

100 x 100

DIMENSIONS/WEIGHTS

Dimension in Shiping (W x H x D) [mm]

556 x 350 x 138

Dimension with Stand (W x H x D) [mm]

492.5 x 378.4 x 200.8

Dimension without Stand (W x H x D) [mm]

492.5 x 284.6 x 50.7

Weight in Shipping [kg]

3.3

Weight with Stand [kg]

2.3

Weight without Stand [kg]

1.9

POWER

Power Consumption (DC Off)

Less than 0.3W

Power Consumption (Sleep Mode)

Less than 0.5W

AC Input

100~240V (50/60Hz)

Type

External Power(Adapter

Power Consumption (On-Mode)

13W

ACCESSORY

HDMI

YES(1ea)

D-Sub

YES(1ea)