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.)
    ENERGY STAR® Qualified


  • 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 5 out of 5 by from LG UltraFine 5K Display for iPad Pro (and Mac) This latest model works with the most recent iPad Pros (as well as recent Macs). I tried it with my 2018 iPad Pro 12.9-inch. When running apps like AppleTV, Hulu, and AmazonPrime Video, the LG displayed 4K movies at true 3840x2160 at 60Hz while the iPad Pro displayed start/stop and jump forward/backward controls. Games like Real Racing 3 displayed the racing simulation on the LG while the iPad Pro acted as a steering wheel with throttle and brake controls. The LG display also charged the iPad Pro while it was connected. Click this link to see my full review: https://barefeats.com/LG-UltraFine-5K-Rev-B.html
Date published: 2019-09-10
  • y_2020, m_2, d_18, h_20
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.5
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_1
  • loc_en_US, sid_MD07000225, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_lg
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 8ms


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 lg 27md5kl-b connected to my 2019 MacBook Pro via Thunderbolt 3. I can't control the monitor brightness, the monitor does not react to f1/f2 keys nor is there a brightness control in system preferences. Is there any way to change the brightness?

Asked by: mtaticek
For assistance with your monitor, please give our computer specialists a call at 800-243-0000.
Answered by: ChrisPSM
Date published: 2020-01-20

Is there a way to connect to this monitor my old PC with VGA &amp; HDMI outputs? If so, is there a way to flip between that old PC and my MacBook (output USBc), without having to plug &amp; unplug all the time?

Asked by: MarcinS
You can inquire about USB-C to HDMI adapters or Thunderbolt&trade; 3 to HDMI adapters from retailers or online sites who carry them that you can use to connect to the USB-C port or Thunderbolt&trade; 3 ports on the LG 27 inch UltraFine 5K IPS Monitor with macOS Compatibility, Model # 27MD5KL-B...^IFV
Answered by: Ivanf
Date published: 2020-01-15

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
  • y_2020, m_2, d_18, h_20CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.5
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_14
  • loc_en_US, sid_MD07000225, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_lg
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getContent, 11ms
Compare (0)