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Key Features

  • 21:9 UltraWide® Full HD (2560x1080)
  • Dynamic Action Sync
  • Black Stabilizer
  • SRGB Over 99%
  • 4-Screen Split
See Retailer for Pricing

Gaming Gets Real

LG’s UltraWide monitor immerses you in its panoramic scale, true-to-life
color and brilliant clarity. Gamers never sit still – no problem, LG’s
IPS screen looks great from virtually every angle. Dynamic Action Sync
lets you catch every moment in real time. LG’s Black Stabilizer brightens dark scenes so the enemy can't hide.

UltraWide 21:9

UltraWide® 21:9

The UltraWide 21:9 aspect ratio makes movies and games more immersive than ever. Need to get some work done, too? All of that UltraWide real estate makes it easy to view multiple documents at the same time, so you don't need to flip back and forth between them.

IPS Display_M02A

IPS with sRGB Over 99%

IPS (In-Plane Switching) technology enhances the performance of liquid crystal displays. Response times are shortened, color reproduction is improved, and users can now view the screen at virtually any angle. sRGB is the standard color space of ideal color reproduction.

Dynamic Action Link

Dynamic Action Link

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

Black Stabilizer

Black Stabilizer

Keep visibility even in dark scenes. LG's Black Stabilizer sense dark scenes and helps make it brighter so that you can find the enemies hiding and waiting to attack your player in the dark.

Game Mode

Game Mode

Set your game mode optimal gaming conditions. There are 3 gamer modes, 2 First-Person-Shooter modes and even and RTS pre-set mode so you can choose the best mode for you.



Multitasking doesn't have to mean shuffling back and forth between windows*. With a single click, the 4-Screen Split feature divides the screen into as many as four customizable segments, two-by-two. Now you can see four different windows at the same time.

Disclaimer: *Screen Split software runs on Windows Vista/7/8 and Mac OS

Flicker Safe

Flicker Safe

New dimming technology is applied to minimize the flicker level that may cause eye fatigue. With almost-zero flicker* technology, looking at your computer screen for longer periods of time can be more comfortable.

* LG's new Flicker Safe system is certified by TUV for its almost-zero flicker


What People Are Saying

Rated 5 out of 5 by from Great Picture I've had this monitor for over a year at least and I love it. Great image, still works and my games look fantastic in ultrawide.
Date published: 2018-12-31
Rated 5 out of 5 by from Good price and good cuality month ago and is very good, and i will recomend this product
Date published: 2018-06-18
Rated 5 out of 5 by from Great monitor! This is a great monitor for the money. I have only have it for 2 weeks and so far so good.
Date published: 2018-03-31
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Ask your questions. Share your answers.
Please first review the detailed product information and help guides in the Product Support section for this product prior to posting a question.

This monitor have no sound? thes sound is just with headphones?

Asked by: CamboriU
Hello, this monitor does not have speakers nor headset jack. ^AC
Answered by: Amber C
Date published: 2018-03-14

I lost the power cord for this (25UM56-P). How do I get a replacement?

Asked by: BetterOffZed
Please see the links below for the parts needed. ^AC Power Cord - Adapter -
Answered by: Amber C
Date published: 2018-02-20

How many Volts can this monitor withstand? I am from New Zealand and had it shipped over. 

Asked by: SamPB
We do not recommend our units be used outside of the USA, but it is 19 V, 1.6 A. ^AC
Answered by: amber
Date published: 2017-12-11

My laptop doesn't have a CD drive, and i can't find any software to download for the monitor. How can i get the contents (if possible, step by step) so i can try out the features for this monitor?

Asked by: Tiny0125
We appreciate your interest in this monitor. More information would be needed as to what software you are trying to download. Please contact our Customer Interactive Center at 800-243-0000 for further assistance.
Answered by: NeilE
Date published: 2017-08-30

Is the monitor 144hz ?

Asked by: Grank48
Our offices, in the United States, do not have specific product information units released in Indonesia. In order to obtain such information, it is recommended to check our subsidiary’s website, at
Answered by: NeilE
Date published: 2017-01-31

Hi I brought this last month and i love the monitor. though its not a big focus as i'm using it as a monitor, i want to confirm if I do have a hadware problem. Audio isn't coming out from the MONITOR, does the HDMI supplied with this supports audio?

Asked by: eryson
The monitor does not have speakers
Answered by: EpicFP
Date published: 2018-01-06

What type of HDMI is do these inputs support?  1.1, 1.2, 1.3a, 1.4a or 2.0? I hear that the older HDMI cant support more than 24fps so 60 hertz would be kinda useless. I need to make sure i can shoot 60fps trough the hdmi so i can match the 60 Hertz.

Asked by: ToxicSquirrelX
The HDMI ports on the ENERGY STAR® Qualified LG 25" Class 21:9 UltraWide® IPS LED Gaming Monitor (25" Diagonal), Model # 25UM56-P are version 1.4a...^IFV
Answered by: LGJoel
Date published: 2016-03-04

Which video cards does this monitor support ? (From reviews people seem to be having trouble with their video card not working with this monitor.)

Asked by: saraw109
We appreciate your interest in this monitor and its features. This model is designed to connect to a computer, or other device, using one of two HDMI ports. The software allows for dual controllers and split screens. While we do not have a recommendation for a particular video card, whichever card is used should be compatible with this, as well as a 2560x1080 resolution, a 21:9 aspect ratio, a 60Hz refresh rate, and a 5ms GTG response time.
Answered by: NeilE
Date published: 2016-02-16
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