• UltraWide® 21:9
  • Mac® Compatible
  • sRGB 99%
  • 4-Screen Split
34” Class 21:9 UltraWide® IPS Monitor (34.0" Diagonal)


    • Screen Size
    • 34"


    • Screen Size Class (diagonal)
    • 34" Class (34.0" diagonal)
    • Panel Type
    • IPS - LED
    • Aspect Ratio
    • 21:9
    • Resolution
    • 2560 x 1080
    • Color Gamut
    • sRGB (100%)
    • Brightness (cd/m2)
    • 300 cd/m2 (Center, 1 point)
    • Contrast Ratio(Original)
    • 1000:1
    • Response Time
    • 14ms
    • Viewing Angle (CR≥10)
    • R/L 178 (Typ.), U/D178 (Typ.)
    • Panel Surface
    • Hard Coating, 3H


    • DVI-D
    • 1
    • HDMI™
    • 2
    • Headphone Out
    • 1
    • Display Port
    • 1


    • ENERGY STAR® Qualified
    • Yes
    • Type
    • Adapter
    • Input
    • 100~240V


    • PC
    • Yes (Wide, Original, Cinema1, Cinema2, 1:1)
    • DDC/CI
    • Yes
    • Auto Resolution
    • Yes
    • Plug & Play
    • Yes
    • sRGB
    • Yes
    • Sound
    • Yes
    • Screen-split
    • Yes (S/W)
    • PBP (Picture by Picture)
    • Yes


    • TCO6.x
    • TC06.0
    • UL(cUL)
    • Yes
    • CB
    • Yes
    • FCC-B, CE
    • Yes
    • CCC, BSMI
    • Yes
    • KC
    • Yes
    • EPA
    • Yes
    • Yes
    • Windows 8
    • Yes


    • VESA® Size (mm)
    • 75 x 75
    • Power Cord
    • 1
    • HDMI
    • 1
    • Detachable Base
    • Yes
    • Tilt (angle)
    • -5~20 Degree
    • Stand Body Cover
    • 1


    • Limited Warranty
    • 1 Year Parts & Labor

What people are saying

Rated 5 out of 5 by from Bigfoot lives here! Bigfoot needs a big footprint in this monitor delivers… Awesome
Date published: 2018-05-20
Rated 5 out of 5 by from LG Monitor is exceptional Outstanding device that is vibrant and usable as having dual monitors. I can't wait to see how streamed movies will appear!
Date published: 2017-09-22
Rated 5 out of 5 by from A Great Choice I have had this monitor for over a year and I have not had a single issue. The split screen works great and the size of the screen is definitely a plus. I use this monitor for work and I usually have multiple screens up at the same time. Since it is so large the pages are able to stay at almost the same size when I use the split screen feature. You will not regret it if you purchase this monitor.
Date published: 2016-04-01
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Ask your questions. Share your answers.
Please review the detailed product information and help guides in the
Product Support section for this product prior to posting a question.

I'm having issues while connecting the monitor to my laptop. The software Screen Split is giving me an error pop-up balloon that says "Screen Split fail to start". Is there an updated version of this software? I'm running Windows 7 SP1. thanks!

Asked by: tazsoccer76
Our offices, in the United States, do not have product information for Canada. In order to obtain such information, it is recommended to check our subsidiary’s website, at You may also contact our Canada offices at 1-888-542-2623.
Answered by: NeilE
Date published: 2016-08-06

Is this monitor compatible with Windows 10?

Asked by: Walter153
LGJoel, I had heard that it will be Win10 compatible or that new drivers will be released by LG in October. I agree that it _should_ be class compliant, however my audio stopped working over MiniDisplayPort as soon as I upgraded to Windows 10. Can you tell us if there is anything new on LG's front to support audio over MiniDP with Windows 10, or what other configurations might be necessary? Thanks!
Answered by: c016smith
Date published: 2015-10-16

Will the Screnn Split works with newly released Microsoft Windows 10?

Asked by: John1v
We regret the inconvenience you have experienced with this monitor. This model was designed to operate with up to Windows 8. We do not have drivers available for Windows 10 operations. If the Operating System does not have appropriate drivers installed, then the monitor may not operate properly.
Answered by: NeilE
Date published: 2017-01-27

RE 34UM65-P, Can you split the screen(PBP) other than 50/50?

We are using the screen for a Oral surgery. We'd like to use the PBP to split the screen say 60/40 or 70/30 to show the xray on the left and the Vitals monitor on the right. Is this possible? We only seem to be able to get a 50/50 split. Thank you in advance for your assistance. Brian
Asked by: Bj440
We appreciate your interest in this 34” monitor and its capabilities. This unit is designed for operations with a 50/50 split screen. It does not have the capabilities for adjusting the pictures sizes further.
Answered by: NeilE
Date published: 2015-05-27

does LG 34UM65 Ultrawide monitor support HDCP

Had no problem playing my bluray and dvd collection with previous all I see is snow and error message sayng I have a device not compatible with HDCP.....only change in my configuration is the new monitor
Asked by: Teee
We regret the inconvenience you have experienced with this monitor. What type of cable is running between the player and the monitor? To what resolution is the player set? These can affect the operations and playback of a video. Please contact our Customer Interactive Center at 800-243-0000.
Answered by: NeilE
Date published: 2015-04-08

Can this monitor be used with MacBook Air?

I have read some not so favorable reviews about the actual compatibility with Macs, and what is claimed by LG. I also read the manual and it does not reference how to connect to the Mac. It only talks about connecting to a PC. I also want to make sure that the quad screen feature will work.
Asked by: Jncl74
i am using it with my macbook pro, 17" laptop i did have to purchase another cable to get full resolution i purchased the cable online at amazon.
Answered by: tuesdaytues
Date published: 2015-11-23

what are the viewable screen dimensions of the 34UM65-P

what is actual measurable viewable screen of model 34UM65-P, not including the frame?
Asked by: bobSil
31.5 inches wide from where i start to see my desktop and 13.25 top to bottom
Answered by: tuesdaytues
Date published: 2015-07-13

I will be using this monitor for gaming, what's the difference between this monitor and the 34UM64-P?

Asked by: LancePrior
Answered by: DavidLL
Date published: 2015-05-02
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