• 1.0 out of 5 stars


    Bought July 30th, and didn't use it for the first two weeks. Now that I have been using it for the last two weeks, it has blanked out on me 5 times. It's getting more and more frequent. There is no power button on this so you can't power it on and off, the only choice is to pull out the plug and hope that causes it to flicker back on. I thought it was only when the computer went to sleep, but now it just happens while working. Apple top tech suggest shutting down the computer to get it to work every night, LG tech suggests change the power outlet it was plugged into. Forget it. Don't buy this monitor. This or the B version. Junk. LG tech support is a joke. Run away Run away. Mine is going back today.

    4 of 5 people found this useful

  • 4.0 out of 5 stars

    nice display, Apple stands are better


    Works fine for me. Connected to touchbar Macbook Pro. Great to have the high resolution (I have 5K) screen.

    Vertical position adjustment (a feature which is not important to me, but am including for completeness).


    Wobbles. Whenever I bump my desk, the display wobbles and takes about 6 seconds to damp out and stop. Very annoying. Never had this problem with Apple displays (same desk).

    Horizontal tilt alignment. Yes, you can adjust, but a solid stand would solve the problem with zero user participation. Again, Apple stands are better on this.

    Edge to edge glass Apple display cleaner.

    Heavy. Hard to move from side to side to point screen sideways to adjust pointing or show displayed content to others. Easy to do with Apple displays.


    I held off getting this, waiting for an Apple design alternative, but finally gave up, suspecting Apple/LG arrangements limited customers to this LG version.

    Nice screen display, but wish Apple had continued the Apple display tradition for its superior mount.

    Display wobble continues to be annoying.

    2 of 2 people found this useful

  • 5.0 out of 5 stars

    The best

    I am not sure why all the negative reviews, I can only attribute it to user error or other hardware issues not related to the monitor. I have it hooked up to my Mac Pro. It's amazing compared to the Apple branded monitor. The picture is so unreal. I hooked it up to my MacBook Pro, no issues there neither. I am running the latest version of MacOS. If you want a the best monitor on the market, don't hesitate in buying this monitor. Don't pay no attention to the negative reviews. You have to tweak the monitor, you have to set it as your primary screen, etc..it's not a monitor issues, it's a user issue. So rest assured, this monitor is the tops of the tops.....but do yourself a favor, buy it open box somewhere and save a few hundred....great monitor. In fact, I am searching for my 2nd one currently....

    4 of 5 people found this useful

  • 5.0 out of 5 stars


    Paired with a 2018 MacBook Pro . . . perfect out of the box, superior visual quality and still is.

    2 of 2 people found this useful

  • 5.0 out of 5 stars


    I replaced a 21:9 LG display that used Thunderbolt 2 with this, and I couldn't be happier. Great interoperability with the MacBook Pro (much better than previous), and the image quality and brightness are really fantastic. No regrets

    3 of 3 people found this useful

  • 1.0 out of 5 stars

    Leads to my audio constantly buzzing

    Ever since I started using this monitor I have crackles, buzzes and hums on my audio equipment as long as I am near the monitor. Even using my iPhone with some headphones near the monitor will lead to a buzzing on it. Great picture quality though.

    2 of 3 people found this useful

  • 4.0 out of 5 stars

    not as "plug and play" as you'd think. Here's how to make it work

    Once I finally got it working, it seems to work quite well, but I had a heck of a time getting it set up. The "plug and play" feature isn't quite true, there is a key setting you need to configure before it will work properly. I'm sure experienced macophiles would know it intuitively, but it took me quite a while to figure it out.

    When I first plugged it in I was quite frustrated because it displayed my background screen but none of my active windows, and the menu bar at the top of the screen was grayed out.

    I discovered quite by accident that if I set my display to "airstream" to AppleTV it would magically also display on the LG, but that was quite odd and as long as I was using it I couldn't watch Apple TV. Plus there seemed to be a weird delay if I was trying to make a video conference call, as it seemed to be going from my laptop to my appleTV to my monitor.

    In desperation, I started clicking on every option everywhere on my system preferences. I discovered that there is a tab under display called "Arrangement." Under "Arrangement" was a check box under "Mirror Displays."

    Duh. After clicking that, the monitor immediately popped up and all was well.

    I'm sure this was obvious to many people, but to me it was a headscratcher, and even calling Apple Support didn't help, as it didn't occur to any of them, either.

    So, if you buy this, just be aware that plugging it in will not alone make it function. You need to go to System Preferences/Display/Arrangement/Mirror Displays. There are no instructions provided anywhere with the monitor or online either at the apple site or the LG site other than "plug and play," so knowing this is quite helpful.

    Arrangement. Seriously? That's one heck of a non-intuitive command.

    4 of 8 people found this useful

  • 5.0 out of 5 stars

    What a nice monitor, not sure what all the bad reviews are about?

    This is a fantastic product. I'm not sure what all the bad reviews are about, perhaps there have been revisions. Mine works flawlessly with my 2018 MacBook pro. Really glad I didn't let the bad reviews persuade me to look elsewhere. You get the fully integrated functionality like the Thunderbolt displays. The panel looks as good as my iMac 5k. I love the matte black finish, kind of industrial looking. Nice.

    2 of 2 people found this useful

  • 1.0 out of 5 stars

    Worked ok for 16 months, now failing with crashing MacBook Pro

    I am working with a 2016 MacBook Pro 13 inch and all worked ok but now constant crashing when reconnecting after sleep mode. Restarts the computer with all the issues. Flickers for some time on/off after restart and then works until the next reconnect.
    The sharpness is really great, colors are very good, however, it could be brighter. It also had issues before with turning black while working and coming back immediately. No normal USB ports, only USB-C which means I had to buy additional adapters for standard devices that are not even offered as USB-C, yet. It is a shame that Apple is selling this for the high price but not offering any support and does not care for the issues. I would highly recommend staying away from this display.

    1 of 2 people found this useful

  • 5.0 out of 5 stars

    Amazing Thunderbolt Display!

    I've recently upgraded my MacBook Pro from a late 2013 to one of the new 2018 (the 13" Core i7). In addition to that upgrade, I also purchased the LG UltraFine 5k display and the new Black Magic eGPU. This setup is amazing! The monitor plugs into the eGPU, and the eGPU plugs into the MacBook. I have ONE cable for everything. I love it.

    As for the monitor, aside from the iMacs I've seen in the Apple Stores, this is the most gorgeous display I've ever seen. 5k resolution, bright, color accurate, amazing! Highly recommended if you can swing the insanely high price.

    4 of 4 people found this useful

  • 5.0 out of 5 stars

    Just Wonderful

    This is an amazing 5k display! I use it with a 2018 MacBook Pro 13" (2.7GHz, 16GB, 1TB SSD), and the Blackmagic eGPU. No dead pixels, beautiful display, sounds great, and no issues. Photoshop on this is really nice.

    Admittedly I'm coming from a 7 year old MacBook Pro and 23" Cinema Display, hence, this is quite the upgrade. I'm just in awe.

    Thank you Apple!

    5 of 5 people found this useful

  • 1.0 out of 5 stars

    Still crashes MacBook Pro (2017) nearly every time it sleeps

    The monitor looks great, good real-estate, clear text etc. But it frequently crashes my MBP. If I go to lunch, I come back to a post-boot login screen. Can't believe this is still happening. No updates have fixed.

    8 of 9 people found this useful

  • 5.0 out of 5 stars

    This is my dream Display.

    LG great job. Amazing graphics good color. Only word "best“.

    3 of 7 people found this useful

  • 5.0 out of 5 stars

    This is amazing

    I Use this with my iMac Pro. Wow. Wonderful Graphics and so great. I don't unterstand this critical rates.

    Ps: i'm a Programmer.

    3 of 6 people found this useful

  • 5.0 out of 5 stars

    I love it.

    The Display is so Great and so good to use. I work with this Display on my MacBook Pro 2017!

    4 of 7 people found this useful

  • 4.0 out of 5 stars

    Really great display! Just wish it didn't flicker

    I purchased the LG UltraFine 5K (27MDKA-B) in ~mid-March of 2018, so I've had it for a while now. It's a gorgeous display, I love the quality and how amazing videos look on this thing.

    My only issue is that my screen flickers. I know this problem was supposed to be fixed but I don't know, I guess I got unlucky or something. Anyway it's still a stunning screen and I'm for the most part happy with it! Maybe one day I'll buy another :) (or go super duper ultra wide, whichever comes first)

    5 of 5 people found this useful

  • 5.0 out of 5 stars

    Buy the newer version LG part number 27MD5KB-B not 27MD5KA

    After extensive research it appears the issues are related to the first generation of this display which is part number 27MD5KA. LG has since rectified the issues and the updated monitor part number is 27MD5KB-B. I purchased the newer 27MD5KB-B for use with my 2017 MacBook Pro and it has work flawlessly. It's a gorgeous display that got off on the wrong foot.

    30 of 30 people found this useful

  • 5.0 out of 5 stars

    Amazing 5K monitor...don't understand the negative reviews

    I've been using a Mac for 15 years and this monitor, placed right beside a 27" Retina iMac, looks absolutely identical! Not close...IDENTICAL. Seriously, I do a lot of photo editing and regardless of what resolution you put this monitor on, its flawless. That said, you do have to do a quick calibration with the Color Sync Utility in macOS to set the whitepoint where you want it. You can set the whitepoint to match a MacBook Pro, if you're using one with the monitor, or you can simply set the whitepoint to where you'd like your whiteness to be. That's the ONLY adjustment needed on the monitor, otherwise it comes perfectly calibrated from the factory.

    I have absolutely none of the issues some reviewers here have complained about...literally everything works perfectly with this monitor. It charges my 15" MacBook Pro (2017) as it should (85W power supply) and the three USB-C ports on the back of the monitor serve a hub to keep your MBP free of cables and dongles.

    If there is one tiny thing to complain about, it's nothing at all to do with the performance of this monitor...it's how it's made. When compared with other monitors it's just fine, but a) it's not of the thin bezel design, it has a 1/2-inch bezel on the left, right and bottom and because of the camera and light sensor on top, the bezel is slightly larger. But the case is matte black so you don't even notice this. It's not a beautiful piece of sculpted aluminum, as if manufactured by Apple. But it's made to work perfectly with a Mac Pro, MacBook, or Mac Mini. Or any other Mac with a USB-C port.

    Honestly, this monitor is a class act! Yes, it's expensive...but so is that Mac you're using it with. If you have a

    5 of 6 people found this useful

  • 2.0 out of 5 stars

    Image Retention Nightmare

    I bought one of these when they were first available. About 6-8 months after I had some major image retention (Ghosting). Not burn in, but Image Retention.

    The image would ghost for about 5-10 min and then go away. This is super annoying! Too bad because the monitor is great in every other aspect. But because of this ghosting I can't give this monitor a rating higher then a 2 and I can't also recommend it :-(

    6 of 7 people found this useful

  • 4.0 out of 5 stars

    Beautiful picture and better than expected usability.

    I'm a seasoned IT professional and I read all the bad reviews and was hesitant. I figured that Apple would not release something defective and rolled the dice.

    I plugged it into my 2018 MBP and it was perfect. Then my WIFI broke and I found I had a lower case network name of my connection. I deleted the lower case network name entry and have had no problems since. Picture is amazing. I think the sound is good. When I put the MBP to sleep it starts up fine. Shutdown your MBP and you will have to open up the MBP to start it up again. All the LG monitor patches were previously installed on the monitor so I did not have to update anything.

    The LG also came with it's own recommended USB C cable and Apple sold me one by default for no reason for $40. LG said to use their cable so I may return the other one.

    I have no new complaints but I'm used to problems.

    5 of 6 people found this useful