LG 20MK400H-B 20″ 60Hz Monitor

20 inch · 1366 x 768 · 60 Hz · TN

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Screen size 20 inch
Resolution 1366 x 768
Refresh rate 60 Hz
Panel TN
Response time 2 ms

LG 20MK400H-B 20″ 60Hz Monitor is a 20-inch monitor with 1366 x 768 resolution, a 60 Hz refresh rate and TN panel. Fine for work and everyday use; for fast shooters look at 144 Hz and up. It came out in 2026.

Released: 2026-03-31

Specifications

Key specs

Screen size: 20 inch
Resolution: 1366 x 768
Refresh rate: 60 Hz
Panel: TN
Response time: 2 ms
Released: 2026-03-31
Part number: 20MK400H-B.AWP

Display

Display diagonal: 50.8 cm (20")
Display resolution: 1366 x 768 pixels
HD type: WXGA
Native aspect ratio: 16:9
Display technology: LED
Panel type: TN
Display brightness (typical): 300 cd/m²
Response time: 2 ms
Display surface: Matt
Screen shape: Flat
Supported video modes: 1080p
Contrast ratio (typical): 1000:1
Dynamic contrast ratio marketing name: Mega Contrast
Maximum refresh rate: 60 Hz
Viewing angle, horizontal: 170°
Viewing angle, vertical: 160°
Display number of colours: 16.78 million colours
Pixel pitch: 0.31125 x 0.31125 mm
Horizontal scan range: 30 - 89 kHz
Vertical scan range: 56 - 75 Hz
DDC/CI: Yes
Colour gamut: 72%

Performance

AMD FreeSync: Yes
VESA Adaptive Sync support: Yes
Flicker-free technology: Yes

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Design

Product colour: Black

Ports & interfaces

VGA (D-Sub) ports quantity: 1
HDMI ports quantity: 1
Audio input: Yes
Audio output: Yes
Headphone out: Yes
HDCP: Yes

Ergonomics

VESA mounting: Yes
Panel mounting interface: 100 x 100 mm
Tilt adjustment: Yes
Tilt angle range: -5 - 20°
On Screen Display (OSD): Yes
Number of OSD languages: 18
Plug and Play: Yes

Power

Energy efficiency class (SDR): D
Energy consumption (SDR) per 1000 hours: 11 kWh
Power consumption (standby): 0.3 W
Power consumption (off): 0.3 W
AC input voltage: 100 - 240 V
Energy efficiency scale: A to G

Weight & dimensions

Width (with stand): 625.6 mm
Depth (with stand): 204.1 mm
Height (with stand): 468.7 mm
Weight (with stand): 4.6 kg
Width (without stand): 625.6 mm
Depth (without stand): 44 mm
Height (without stand): 375.2 mm
Weight (without stand): 4.2 kg

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About this product

AMD FreeSync With FreeSync, gamers can experience seamless, fluid movement throughout hi-res, fast-paced games. FreeSync virtually eliminates screen tearing and stuttering. Dynamic Action Sync Minimize input lag with Dynamic Action Sync so you can catch every single moment in real-time. Black Stabilizer Keep visibility even in dark scenes. LG's Black Stabilizer senses dark scenes and helps make it brighter so that you can find the enemies hiding and waiting to attack your player in the dark. On-Screen Control On-Screen Control puts a host of essential monitor settings into a handy window for quick, easy access. Volume, brightness, picture mode presets, Screen Split 2.0 and Dual Controller and more can now be adjusted with just a few clicks of the mouse, instead of hard buttons on the monitor. Wall Mountable This monitor gives you the freedom to take it off the desk and hang it on the wall. Liberate your viewing options and save desktop space with this wall-mountable LG monitor.

ENERGY STAR

ENERGY STAR certified monitors meet stringent energy efficiency requirements set by the US Environmental Protection Agency in On, Sleep, and Off Modes.

20MK400H-B vs similar monitors

	LG 20MK400H-B 20″ 60Hz Monitor	Lenovo D20-30 Monitor	Lenovo ThinkVision E20-1b Monitor	Lenovo ThinkVision E20-30 Monitor
Screen size	20 inch	20 inch	20 inch	20 inch
Resolution	1366 x 768	1600 x 900	1600 x 900	1600 x 900
Refresh rate	60 Hz	60 Hz	60 Hz	60 Hz
Panel	TN	TN	TN	TN
Response time	2 ms	2 ms	2 ms	2 ms
Released	2026	2026	2026	2026