LG 27 inch UltraFine 5K IPS Monitor with macOS Compatibility
  • 27” 5K (5120 x 2880) IPS Display
  • DCI-P3 99% Color Gamut / 500nits Brightness
  • Thunderbolt 3 Port with up to 94W PD
  • 3 USB Type C Ports
  • Mac OS Compatibility
  • Built in Camera / Rich Bass Speaker
LG 27 inch UltraFine 5K IPS Monitor with macOS Compatibility
Where to Buy
*The USB Type-C? enabled Mac or IPad Pro can be connected via the USB Type-C? cable included in package.
*VESA mount bracket is not included in package.


  • Screen Size
    Panel Type
  • Color Gamut (Typ.)
    DCI-P3 99% (CIE1976)
    Color Depth (Number of Colors)
  • Pixel pitch (mm)
    0.11685 x 0.11685 mm
    Response Time (GTG)
    14ms (GtG, Not Support OD)
  • Refresh Rate
    Aspect Ratio
  • Resolution
    5120 x 2880
    500cd (Typ.)
  • Contrast Ratio
    Viewing Angle
    178?(R/L), 178?(U/D)
  • Surface Treatment
    Low reflective treatment


  • USB Type-C
    USB Up-stream
    Yes (via Thunderbolt)
  • USB Down-stream
    Yes (USB-C/3ea/ver3.0)
    Thunderbolt 3
    Yes (94W PD)


  • Type
    Built-in Power
    100~240V (50/60Hz)
  • Power Save/Sleep Mode (Max)
    < 1.0W
    DC Off (Max)
    < 0.3W
  • Power Consumption (Typ.)
    Power Consumption (Energy Star)
  • Power Consumption (Max.)


  • Built-in Camera


  • Speaker
    Speaker Output
  • Speaker Channel


  • With Stand (WxHxD)
    24.6" x 22.6" x 9.4" (Up) 24.6" x 18.3" x 9.4" (Down)
    Without Stand (WxHxD)
    24.6" x 14.8" x 2.1"
  • Shipping Dimensions (WxHxD)
    29.3" x 22.6" x 12.4"
    With Stand Weight
    18.7 lbs
  • Without Stand Weight
    14.1 lbs
    Shipping Weight
    29.8 lbs


  • Tilt (Angle)
    Height (mm)
  • Display Position Adjustments


  • Wall Mount Cover
    USB Type-C
  • Thunderbolt


  • Limited Warranty
    1 Year Parts and Labor

What people are saying

Rated 1 out of 5 by from Failed at not even 3 years old While the picture quality has been very good, form a usability and durability view this screen is extremely poor. I have always used it with the out-of-the-box cable and still, many times it would not connect properly and now, after 2 years and 10 months completely failed. Only power supply but no more picture. With not even a single button, there is no reset or trouble shoot. I just get an error message, that I the used cable is not supported? Also tried other supported cable, same error message. Service is not helpful at all would recommend to have repaired and send in at my own cost. Would be ok for a $200 screen but not this. I don't care too much about the design, yes, larger bezel on top is odd but otherwise it has a clean look. Sound issues as described by others, either too low or too high volume. Running it with both a 2016 and a 2019 13" MacBook Pro.
Date published: 2019-12-15
Rated 1 out of 5 by from Was great until it stopped working after 14 months Beautiful monitor that worked almost flawlessly with my 2018 Macbook Pro. Occasionally the screen would flicker back for a few seconds every now and then, but it was a pretty rare problem. Then about 14 months after purchase (just past the end of the warranty period) the screen flickered back as I was adjusting the height, then went totally black and never came back. The LG-approved repair place in my area now wants $600 just for the price of the replacement "mainboard."
Date published: 2019-12-12
Rated 3 out of 5 by from Good monitor no controls I really like the display, clean clear and the USBC connection works great with my Mac Book Pro. I am very happy with the color, sharpness and ease of connectivity \. But with no controls it makes it really frustrating. I cannot find a way to make the thing stop blinking short of shutting off the power it goes in to a "sleep mode" that is annoying. After a few mins no mater what screen saver settings I have it starts blinking a white screen. IS there a driver or something I am missing?
Date published: 2019-09-19
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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 have a mac book thin air, it does not have a usb , I am looking for a &quot;55&quot; monitor to use with this, do you have one compatible with Mac book thin air?

Asked by: rhome
Your MacBook Air should have a Thunderbolt 3 (USB-C) port that can be connected to the Thunderbolt 3 port or USB-C ports on the LG 27 inch UltraFine 5K IPS Monitor with macOS Compatibility, Model # 27MD5KL-B. Regrettably, we do not have any 55&quot; monitors in our Consumer division. YOu can visit our Business Division for Commercial Displays of that size or use our 55&quot; consumer TVs as a monitor...^IFV
Answered by: Ivanf
Date published: 2019-11-18

Can I hook this up to a pixelbook go with USB-c?

Asked by: Madino
The LG 27 inch UltraFine 5K IPS Monitor with macOS Compatibility, Model # 27MD5KL-B has a ThunderboltTM 3( ) / USB-C Host connection port on it but it has a native 5K (5120 x 2880) resolution. Check the specifications for your Pixelbook Go. Don't believe it can drive the monitor...^IFV
Answered by: Ivanf
Date published: 2019-11-12

Is there a way to stop the LG Ultrafine 5K from continuously charging my 2018 MacBook Pro while connected to it via USB-C Thrunderbolt 3?

Asked by: postpunksyndrome
Plug in your apple charger first, it will then take precedence, otherwise, don't think so....
Answered by: mortkire
Date published: 2019-10-24

I have a 2015 MacBook Pro 15&rdquo; Retina. &nbsp;My 27&rdquo; apple Cinema Display has died. &nbsp;1. &nbsp;Will this display replace it? &nbsp;2. &nbsp;How does it connect to the Mac? &nbsp;3. &nbsp;Does it charge the Mac?

Asked by: Oldboater
The LG 27 inch UltraFine 5K IPS Monitor with macOS Compatibility, Model # 27MD5KL-B features a Thunderbolt&trade; 3 port that can transmit 5k video, audio and data simultaneously as well as charging a device up to 94W with just single connection which is fully compatible with Thunderbolt&trade; 3-enabled Mac, USB Type-C&trade; -enabled Mac or iPad Pro. Detailed display control of setting, such as brightness and volume, can be done using macOS without having to use any physical buttons on the monitor. It also features three USB Type-C&trade; ports that a USB Type-C&trade; enabled Mac or iPad Pro can be connected to via the included USB Type-C&trade; cable that is packaged with the monitor...^IFV
Answered by: Ivanf
Date published: 2019-10-23

Does it have some options for reducing blue light for eyes and any flicker free technology. Thanks for any answers

Asked by: Maks
The specifications for the LG 27 inch UltraFine 5K IPS Monitor with macOS Compatibility, Model # 27MD5KL-B do not list a Reader Mode which is a function that allows for the reduction of Blue Light emissions that may be harmful to the eys nor that it is Flicker Safe...^IFV
Answered by: Ivanf
Date published: 2019-09-27

Can you &quot;daisy chain&quot; this monitor to a second LG 5k or smaller 4k monitor?

Asked by: Fable
Answered by: 12346969696969696
Date published: 2019-09-13

My Mac Pro has a DVI output for monitor. What cable would I use? Would this LG monitor still OS compatible with my Mac Pro?

Asked by: Chris T
Ivanf is not correct. There are no DVI to USB Type C adapters &ndash;&nbsp;only USB Type C to DVI. In this case, the Thunderbolt protocol is used to transport the underlying DisplayPort signal over a USB Type C cable. DVI, like HDMI, cannot be adapted to DisplayPort, either (unless the conversion is active), although the inverse is possible (DisplayPort to DVI/HDMI). Even if such a conversion were possible in the case of this monitor, your Mac Pro would not support the resolution of this display. Dual-link DVI supports a maximum resolution of 2560x1600 (~2K), well below the 5K of this display. You will also find that it is nearly impossible to adapt dual-link DVI to anything above 1920x1200 resolution using a DVI to HDMI cable, despite the fact that it IS technically possible to do so with HDMI revision 1.4 and later. Depending upon the model of your Mac Pro, upgrading the video card to one that offers DisplayPort/mini-DP output would be the only viable option to connect to a 4K/5K display; keep in mind that it may not be possible to run a Type C-only display from such a card regardless.
Answered by: mnye
Date published: 2019-09-13

I am buying this monitor to replace a failing 6 year old Apple Thunderbolt monitor. I have VMware Fusion on my Mac to run inspection programs that are only written for windows. Will this monitor work with those windows programs?

Asked by: Trophyfluke
Regrettably, we are not familiar with the specifications for your VMware Fusion. VMware Fusion gives Mac users the power to run Windows on Mac along with hundreds of other operating systems side by side with Mac applications so is should affect what your Mac outputs to the LG 27 inch UltraFine 5K IPS Monitor with macOS Compatibility, Model # 27MD5KL-B. We highly recommend that you contact the manufacturer for advice...^IFV
Answered by: Ivanf
Date published: 2019-09-13
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