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27" Class Full HD TN Monitor with AMD FreeSync (27" Diagonal)

  • 27MK400H-B

Key Features

  • 27" FHD (1920x1080) TN Display
  • AMD FreeSync™ Technology
  • Dynamic Action Sync
  • Black Stabilizer
  • On Screen Control
  • Smart Energy Saving
27MK400H-B Full HD Display

Full HD Display

You’re in front of your monitor for hours on end. Make the most of your time, with an LG Full HD LED monitor. The clarity of 1080p pixel resolution is a game-changer. Simply put, everything looks more detailed than standard HD.

AMD FreeSync

AMD FreeSync™

With FreeSync*, gamers can experience seamless, fluid movement throughout hi-res, fast-paced games. FreeSync virtually eliminates screen tearing and stuttering.

*FreeSync is only available when it is connected to Display Port or HDMI.

Dynamic Action Sync

Dynamic Action Sync

Minimize input lag with Dynamic Action Sync so you can catch every single moment in real-time.

27MK400H-B Black Stabilizer

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

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.

Learn More


Watch how the On-Screen Control feature can help configure your display for maximum organization and efficiency.

On-Screen Control

Software download required to enable OnScreen Control. For download details, visit

Wall Mountable

This VESA-compatible 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.

Mounting hardware not included.

ENERGY STAR® Qualified


ENERGY STAR® certified monitors meet stringent energy efficiency requirements set by the US Environmental Protection Agency in On, Sleep, and Off Modes. On average, monitors that have earned the ENERGY STAR® are 25% more energy efficient than standard options.

Screen Size 27"
Panel Type TN
Color Gamut (CIE1931) 72%
Color Depth(Number of Colors) 16.7M Colors
Pixel Pitch(mm) 0.31125 x 0.31125
Response Time (GTG) 2ms (Faster)
Refresh Rate 75 Hz
Aspect Ratio 16:9
Resolution 1920 x 1080
Brightness 300(Typ), 240(min) cd/m2
Contrast Ratio 1000:1 (Typ.)
Viewing Angle 170/160
Surface Treatment Anti glare ,3H
D-Sub Yes (1ea)
Display Port No
Headphone Out Yes
Type Adapter
Input 100~240V, 50/60Hz
Output 19V/1.3A
Normal On (EPA Typ.) 23W
Normal On (factory out condition Typ.) 27W
Power Save/Sleep Mode (Max) ≤0.3W
DC Off (Max) ≤0.3W
Picture Mode Custom, Reader, Color Weakness, Photo, Cinema, Game
Ratio Wide, Original
HDCP Yes (1.4)
Plug & Play Yes
Response Time Control Yes
Adaptive Sync AMD FreeSync™
DAS Mode Yes
Black Stabilizer Yes
Crosshair Yes
Flicker Safe Yes
Automatic Standby Yes
Smart Energy saving Yes
On-Screen Control (OSC) Yes
Super Resolution + Yes
Black Level Yes
Gamma Control Yes
Color Temperature Yes
OSD Lock Yes
R/G/B Color Control Yes
Auto Adjustment(D-sub Only) Yes
With Stand (WxHxD) 24.6" x 18.5" x 8.3"
Without Stand (WxHxD) 24.6" x 14.8" x 1.7"
Shipping Dimensions (WxHxD) 27.9" x 18.1" x 6.3"
With Stand Weight 10.1 lbs
Without Stand Weight 9.3 lbs
Shipping Weight 13.5 lbs
Base Detchable Yes
Tilt(Angle) -5~20 Degree
VESA® Size (mm) 100 x 100
Power Cord Yes
S/W Install CD Yes
Easy Setup Guide Yes
Manual Yes
UL(cUL) Yes
TUV-type Yes
ErP Yes
EPA 7.0 Yes
Windows 10 Yes
Limited Warranty 1 Year Parts and Labor
UPC 719192617506

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