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Key Features

  • 4K UHD (3840 x 2160) IPS
  • HDCP 2.2 Compatible
  • USB Type C™
  • 4x HDMI Inputs
  • On Screen Control
  • Factory Calibrated
Suggested Price


Suggested Price
Promotion Price*


Promotion Price*
43 Inch Class 4K UHD IPS Monitor

LG 4K UHD Monitor

With nearly as much screen area as four 21.5” monitors, the Ultra HD 4K 43UD79-B can multitask—and entertain—in exciting new ways.

43 Inch 4K UHD IPS

43” Class 4K UHD IPS Display

Outstanding Ultra HD performance is assured by the specially designed 4K display panel with in-plane switching (IPS), delivering accurate colors that remain consistent at wide viewing angles, with four times the resolution of Full HD.

HDCP 2.2 Compatible

HDCP 2.2 Compatible

Connect with confidence: This LG 4K monitor is compatible with the latest HDCP 2.2 copy protection, so it will display video from 4K streaming services, game consoles and Ultra HD Blu-ray disc players.

USB Type-C

USB Type-C™ (DP Alt Mode)

Offering a new generation of convenience, USB Type-C™ (DP Alt Mode) ports allow 4K video display and mobile device charging, all at the same time over a single cable.

4x HDMI Inputs

4x HDMI Inputs

Now, the monitor is a multimedia centerpiece. Easily and conveniently connect your other digital devices and peripherals with the convenience of 4 HDMI inputs.

Adjust Display Settings With Remote

Adjust Display Settings With Remote

Picture mode presets, including Picture in Picture, can be easily adjusted with the included remote control.

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

Screen Split

Screen Split

Customize your monitor layout for multitasking with the latest version of LG Screen Split. Resize and display multiple windows at once, with 14 options including four different picture-in-picture (PIP) choices.

10 Watt Speakers with Rich Bass

10 Watt Speakers with Rich Bass

Enjoy what's on the screen with sound produced by the monitor's two 10 watt speakers with Rich Bass. LG’s Rich Bass function can cover sound under 85Hz showcasing a wider and richer sound with impressive bass depth.

Picture Quality
Special Features

What People Are Saying

Rated 4 out of 5 by from EVERYTHING WANTED, except ONE frustrating thing This monitor is EVERYTHING I've wanted and needed for my editing system, but I keep having one problem that's so frustrating... it'll just randomly BLINK BLACK... like turn off, but it's NOT disconnecting from my computer system. It's as if it's still ON, BUT it turns off and will turn back on eventually... it just happens and has been more and more frequent lately. AND it's been happening ever since the recent driver update (Feb 2019) too.
Date published: 2019-02-18
Rated 5 out of 5 by from Better than expected Great 4k picture, easy set up, but the correct cables are not included gor a mac. The excellent sound is a bonus. Very heavy to move
Date published: 2019-01-28
Rated 1 out of 5 by from Nice screen w/ misleading features BAD for Macs IF YOU HAVE A MAC DO NOT BUY THIS. What I wanted: a 4k monitor to use with my Macbook 12" retina. My desire was to have a 4k monitor connected via USB-C with one cable that would charge my Macbook and give USB3 speeds to hub connected peripherals. What I got: a 4k monitor connected via USB-C that provides only 7W of power to my Macbook (the Macbook takes 29W, so it drains the battery), a USB hub that shows up in my Macbook as USB2.0 limited to 480mb/s per second (disk speed testing shows actual speed ~34mb/s....outrageously slow and unusable). I raised these issues with LG support and they responded by simply restating their product claims and ignoring my documented issues. There was no desire on LG's part to resolve my problems or to seek a technical solution. DO NOT BUY.
Date published: 2019-01-18
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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.

which vesa wall mount do you recommend since it weighs so much

Asked by: johnpendleton
LG does not manufacture any Wall Mounts for the LG 43" Class 4K UHD IPS LED Monitor (42.5" Diagonal), Model # 43UD79-B, but since it is a VESA compliant monitor that has an A x B VESA Wall Mount Interface Pattern of 200 x 200mm, VESA compliance guarantees that any VESA Compliant Wall Mount, regardless of brand or manufacturer and regardless of whether it is a Fixed, Tilting or Full Motion Wall Mount, will work with the monitor as long as the Wall Mount supports the monitor's wall mount interface pattern. If the wall mount has a weight limitation, its specifications will specify what weight loads it can support...^IFV
Answered by: LGJoel
Date published: 2019-03-04

Is this monitor RGB or BGR? Is it a 10bit panel?

Asked by: Alex740il
Hello Alex740il. Thank you for your inquiry and interest in the LG 43" Class 4K UHD IPS LED Monitor (42.5" Diagonal), Model # 43UD79-B. This monitor is an RGB panel and 10-bit color is supported via 8-bit + FRC dithering...^IFV
Answered by: LGJoel
Date published: 2019-02-14

If you have 4 computers connected at once will the speaker play sound from any or all of them at the same time or just one that is selected? For example 4 computers that each have some kind of audible alarm will it play from whichever is alarming?

Asked by: Lance G
The Picture-by-Picture 4PBP) feature on the LG 43" Class 4K UHD IPS LED Monitor (42.5" Diagonal), Model # 43UD79-B lets you select various PBP combinations and the Sound Out allows you to select the audio output in PBP mode...^IFV
Answered by: LGJoel
Date published: 2019-02-05

Is it possible to connect two such monitors to one mid 2015 Mac Book Pro? AMD Radeon R9 M370X with 2GB of GDDR5 memory Two Thunderbolt 2 ports (up to 20 Gbps) Two USB 3 ports (up to 5 Gbps) HDMI port

Asked by: KJNH
That will depend on what type of video card you have. If your video card supports a dual-monitor setup, it will be able to handle running two LG 43" Class 4K UHD IPS LED Monitor (42.5" Diagonal), Model # 43UD79-B monitors. Video cards that have two monitor connection ports typically support dual-monitor setups. Multiple monitor support varies from video card to video card. Some video cards support only one monitor while some others support three or more. Dedicated video cards, or cards that aren't built into the computer motherboard, typically support dual-monitors on a single card. Some built-in video cards support dual-monitors as well. If the card has two or more of the same connection type it supports dual monitors. Some cards have two or more different port types and can be interchanged with adapters to support dual-screen setups. Graphics cards that have only one video port do not support dual-monitor setups without adding a second card...^IFV
Answered by: LGJoel
Date published: 2018-10-03

What is the difference between the lg 43mu79-b and lg 43ud79-b monitors?

Asked by: KRC371
The differences between the LG 43" Class 4K UHD IPS LED Monitor (42.5" Diagonal), Model # 43UD79-B and Model # 43MU79-B is that they are from different divisions. The 43UD79-B is from our Consumer division and the 43MU79-B is from our Business/Commercial division. They use different panel types. THe 43UD79-B is an AH-IPS panel whereas the 43MU79-B is an IPS panel. The 43UD79-B features Dynamic Action Sync, Low Blue Light and an Anti-theft stand lock slot which are not featured on the 43MU79-B. The Picture-by-Picture (PBP) function on the 43MU79-B is 2PBP and 4PBP whereas it's only 2PBB for the 43UD79-B and their USB Type-C™ ports have different USB POwer DElivery specifications...^IFV
Answered by: LGJoel
Date published: 2018-12-24

Does it work with the XBOX in 4K mode?

Asked by: 1MORLAP
My Xbox One X recognize this monitor as 4K. I'm using cable that comes with the console. You have to change the settings on the monitor under picture adjust >> Turn on HDMI ULTRA HD Deep Color before the Xbox One X will allow 4k !!!!
Answered by: MSAgent
Date published: 2018-08-21

How do I make the layout view portrait?

Asked by: brl22
Depending on what operating system you are using on your Desktop/Laptop, you will need to go into the control center for your GPU and change the orientation from landscape to portrait for it to output your preferred orientation to the LG 43" Class 4K UHD IPS LED Monitor (42.5" Diagonal), Model # 43UD79-B...^IFV
Answered by: LGJoel
Date published: 2018-08-08

My 43UD79B has this faint vertical ghosting when I have white window against dark background... is this normal?

Asked by: LG fanatic12
Hi LG fanatic12. Your description of 'this faint vertical ghosting when I have white window against dark background..." does not sound normal. You will need to contact the LG Support Center in Australia for troubleshooting to determine what is causing that issue on your LG 43" Class 4K UHD IPS LED Monitor (42.5" Diagonal), Model # 43UD79-B. They can be reached by telephone at 1300 54 22 73 (7 days a week from 7am to 7pm) or you can log onto their site at to click on the links for their Facebook, YouTube, Instagram, or Twitter accounts to get additional assistance or use their LIve Chat feature on their site to chat online in real time with an LG Support Representative (Monday to Friday: 8am to 8pm AEST/ Saturday & Sunday: 9am to 5pm AEST.)...^IFV
Answered by: LGJoel
Date published: 2018-07-16
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