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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
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.


What People Are Saying

Rated 5 out of 5 by from unreal picture! awesome baby!!!! super easy install, had it up and running in less than 5 mins. i use this for tracking in garageband. my goodness does this screen do the job. might buy another just because.....
Date published: 2018-07-11
Rated 4 out of 5 by from Very Good - but poor documentation and support I just bought this monitor to replace a dual monitor setup because I only have 1 HDMI port (using laptop as desktop replacement). It's only been a few days, and I'm definitely keeping it. However, it's been a struggle to get things working the way I would like... and the biggest problem is the support and documentation. Pros: (same as most others) Size Inputs Great Picture Good Sound Cons: Cannot do Audio out of both speakers and headphone jack. Would be very nice to hook up additional speakers to such a nice monitor. Documentation not great - especially for this premium product Support - they don't have very good knowledge My biggest struggles - but was able to finally make it work so I will share how with those who may want to know: LG Dual Controller Problem: Could not get it to work with my 2 (windows) laptops I have. It would not recognize each other even though they were on same network. After trying different things I called LG support line. They said it could not be done between 2 HDMI inputs. One had to be a Displayport or a different type of input. I told them that the documentation did not state that, and asked if it would be enhanced in the future. They said no, that's the way it is. Well -- they were wrong! It does work between 2 HDMI inputs (regardless of which ones)! So, after I ordered a wireless keyboard/mouse to control the separate pcs, and then ordering a displayport/hdmi adapter to try that out, I finally figured out what the SIMPLE problem was! I had both signed in as Main PC (which I told support that both were showing as main.) Once I changed one to Sub PC, they work! So - for those who are struggling with Dual Controller (which is now working wonderfully), ensure these conditions: 1. Update to latest Dual Controller Version (current is 2.35) 2. Install on both PCS -- set only 1 as Main, the other(s) as Sub 3. Ensure both on same network 4. Put Display into PBP/PIP mode (on remote) to show both) 5. Both should see each other's IP addresses. I can now use 1 keyboard and 1 mouse to control both PCs and go easily between the windows. Very good! Sound out of both Monitor and Speakers Problem: Wanted sound out of both monitor and external speakers. This monitor does not have a setting to allow for both. Workaround: I found (on windows) a software call Voicemeeter. It works great in plugging in the speakers into the PC and have both Monitor and speakers play at same time. At first, the delay was terrible, but after tweeking the buffering, it now works very good. I hope that LG updates their documentation and support. And I hope this monitor will work out well!
Date published: 2018-07-08
Rated 4 out of 5 by from Nice display I brought this monitor a month ago and so far it is good. I like the 4k display and speakers.
Date published: 2018-06-19
Rated 3 out of 5 by from Great Product (When It Works), For a Great Price We got a bunch of these at work for our software engineering team. I enjoyed using it so much, I bought one for my home office. Unfortunately the one I got has an electrical defect causing it to short out (loses electrical power) for durations between 3 and 15 seconds. Sometimes it even cuts out and won't turn back on until I unplug it from the wall and plug it back in. I opened a support ticket with LG and long story short it's been over 3 months and I still have the defective product (and no replacement). The customer service process has been pretty horrendous, as you can imagine. Poor communication and follow up, and lots of non-solutions. I even sent in my unit to be repaired by LG, and when they returned it as being fixed, it still had the same issue. Granted none of the same models we have at my company have this problem, so I'd say you're taking a low risk gamble by buying one of these. If you get one that isn't defective, you'll more than likely be very happy with your purchase. However, if you do get a defective unit, be prepared for a whole lot of headaches getting it fixed or replaced.
Date published: 2018-06-19
Rated 5 out of 5 by from Best feature is ability to have multiple programs I can show 4 normal size program windows at the same time and work on them all separately. Really speeds up editing or verifying.
Date published: 2018-06-09
Rated 5 out of 5 by from Awesome Display! With 43 inches and a 4K UHD resolution the screen provides a stunningly rich and vibrant image. Pros: - 4K UHD Resolution - Moderately good speakers - Lots of I/O *** - Well built design/materials - Joystick menu buttons (under LG logo) Cons: - USB-C port is upstream only - Need USB-A to USB-C for updating firmware (Not Included in all Models) - 1 Year Warrenty All in all i am happy with my purchase and after some playing with my GPU settings i got and even better image.
Date published: 2018-06-06
Rated 4 out of 5 by from Great Monitor - 1 Drawback For Mac Users One of the two best monitors I've ever used. An unbelievable amount of screen real estate with the ability to connect and display multiple devices on one screeen. There's a huge amount of ports available, including USB C. I love everything about this monitor with one exception. As a Mac user, the monitor does not deliver enough power to charge my 15" MBP (Late 2016). This would be the absolute perfect monitor if it could charge my laptop and one additional USB C would be welcomed. Besides that, what a great monitor. On a side note, the monitor was missing one fo the included cords. After a short online chat with LG customer service, I had the cable at my door in 3 days - thank you LG customer service! You can't really go wrong with this one, especially at the price point for a 43" 4k monitor!
Date published: 2018-05-18
Rated 4 out of 5 by from Great display, but mine has some problems The display itself looks nice! The size is perfect for 4k, and doesn't require Windows scaling at all. Of course the 4k screen real estate really makes things productive in use. I do have some problems with mine as shipped from Beach Camera (great deal!). The problems aren't theirs as this isn't a refurb, and the box was factory sealed. 1). The audio amplifier or speakers are shot. Staticy at any volume level by way of HDMI or DisplayPort. Dunno what happened, but it happened at the factory. 2). At seemingly random times, the monitor will black out for two to three seconds. This doesn't happen often, but still, it seems to be several times a day. I am downloading the software so that I can see if this is fixed in a firmware update. Provided that mine was just bad luck of the draw, I would recommend this monitor to my family and friends. As for the speakers, that isn't too big an issue, as my motherboard has some rather high end audio on it, and I patch that direct to my stereo.
Date published: 2018-05-14
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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.

I have this monitor set up in a 3 screen display. GTX Titan X Pascal in SLI, all 3 monitors are connected to the main graphics card. The issue I am having is that my screen flickers ever so slightly once in a while. What might be the cause of this? Thanks

Asked by: kyle1987
I'm having this problem too, or something similar. Monitor shuts off randomly for less than a second. A lot of people are reporting this problem. Every hardware component manufacturer blames every other one. I have tried a different monitor with the same graphics card & cable, no similar issue. I have tried different cables, issue remains. I am left with swapping out the video card, but all of this to troubleshoot someone else's issue, at my expense. LG offered to send a tech, but the issue is random. We might sit there all day and not have the problem, or have it 5 times. Since so many are reporting it, I think it's a monitor problem. I don't see reports like this for other monitors, and my other monitors don't exhibit this behavior.  Field tech suggested when it flickers & press any key on the remote to see if the menu pops up. He said this will show whether it's the monitor or not. Two problems with this advice: 1) It happens so fast I don't have time to grab the remote & hit a button & 2) It would prove nothing.
Answered by: Brian3zzz
Date published: 2018-06-21

I have the LG 43UD79-B. I did not receive a software CD. I can't find the Dual Controller software on the website. This monitor has dual controllers. Do I need the software to utilize dual controllers or is it automatic with PBP and PIP?

Asked by: davidk
You can find drivers and OnScreen control software on the following page: If you still need assistance reach out to our computer specialists directly by calling 800-243-0000. ^CP
Answered by: ChrisPSM
Date published: 2018-04-21

Hi, I'm looking at the 43UD97-B. is this also available at larger sizes 52"-55" or so ?

Asked by: ErwinM
The LG 43" Class 4K UHD IPS LED Monitor (42.5" Diagonal), Model # 43UD97-B is only available in a 43" screen. The number at the beginning of the model number indicates the screen size...^IFV
Answered by: LGJoel
Date published: 2018-04-17

Does this monitor use PWM? Is it flicker free? any input is great

Asked by: wrightpt
The LG 43" Class 4K UHD IPS LED Monitor (42.5" Diagonal), Model # 43UD79-B uses PWM at a higher frequency which makes it eye-friendly in practically every normal usage mode....^IFV
Answered by: LGJoel
Date published: 2018-04-16

Can you hook up 2 separate computers to this monitor and use it as a dual monitor for both computers? Currently using quad monitors and would love to cut back.

Asked by: footbalplaya68
The LG 43" Class 4K UHD IPS LED Monitor (42.5" Diagonal), Model # has 4 x HDMI ports (2 x ver 1.4 & 2 x ver 2.0), a Display Port (ver 1.2) and a USB Type-C™ (DP Alt Mode) on it, so technically, you can connect up to 6 computers to it. There may be downsides to connecting multiple computers to the monitor and you might want to look into something like a KVM switch...^IFV
Answered by: LGJoel
Date published: 2018-04-16

do you have a 43 inch monitor with HDR?

Asked by: Dexter1
At this time, the largest monitors we have with HDR are 32UD99-W or 34WK650-W. ^AC
Answered by: Amber C
Date published: 2018-05-31

Is the 43UD79-B compatible with the Mac?

Asked by: Scarletjay
The LG 43" Class 4K UHD IPS LED Monitor (42.5" Diagonal), Model # 43UD79-B has 4x HDMI Inputs, a USB Type C™ port and a DisplayPort fo4 connectivity to Macs. The USB Type-C™ (DP Alt Mode) in 43UD79 Monitor is not for charging laptops...^IFV
Answered by: LGJoel
Date published: 2018-03-26

Does this unit have the FREESYNC feature and does it support that feature through HDMI for the Xbox One X??

Asked by: SantinoVC
The LG 43" Class 4K UHD IPS LED Monitor (42.5" Diagonal), Model # 43UD79-B is not a Freesync monitor...^IFV
Answered by: LGJoel
Date published: 2018-02-21
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