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27 inch Class 5K IPS Monitor with macOS Compatibility.
27" 5K IPS Display
Optimized Color Performance for Mac
LG UltraFine™ 5K Display, is over 50% bigger than a 4K display in terms of raw pixel count, with 218 PPI can express exceedingly detailed picture and sharp text. So you can experience more clarity and accuracy on a large 5K screen.
DCI-P3 & 500nits
Richer color, Better Brightness
Supporting P3 & 500nits of brightness, LG UltraFine™ 5K Display can express razor-sharp text and life-like images with wide color gamut and range of colors.
Powerful and Versatile Port
27MD5KL with Thunderbolt™ 3 can transmit 5k video, audio and data simultaneously as well as charging a device up to 94W with just single connection. This powerful port is fully compatible with Thunderbolt™ 3-enabled Mac, USB Type-C™ -enabled Mac or iPad Pro.
*The USB Type-C™ enabled Mac or IPad Pro can be connected via the USB Type-C™ cable included in package.
Seamless macOS Integration
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.
Built-in Camera & Speaker
Clear Visuals and Live Sound
Built-in stereo speakers, camera, and microphone deliver a rich media experience. LG UltraFine™ 5K Display is best choice for entertainment and communication, such as watching movies, Face Time calls and online chat.
A Flexible Workstation
LG UltraFine™ 5K Display has convenient height/tilt adjustment and offers an easy setup wall-mount for utilizing a VESA mount bracket*. So users can create a more personal, comfortable environment for optimal performance.
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
Without Stand Weight
Display Position Adjustments
Wall Mount Cover
1 Year Parts and Labor
What people are saying
Rated 5 out of
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
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 & HDMI outputs? If so, is there a way to flip between that old PC and my MacBook (output USBc), without having to plug & unplug all the time?
Asked by: MarcinS
You can inquire about USB-C to HDMI adapters or Thunderbolt™ 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™ 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 "55" 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" monitors in our Consumer division. YOu can visit our Business Division for Commercial Displays of that size or use our 55" 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” Retina. My 27” apple Cinema Display has died. 1. Will this display replace it? 2. How does it connect to the Mac? 3. 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™ 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™ 3-enabled Mac, USB Type-C™ -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™ ports that a USB Type-C™ enabled Mac or iPad Pro can be connected to via the included USB Type-C™ 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 "daisy chain" this monitor to a second LG 5k or smaller 4k monitor?
*Prices, promotions and availability may vary by store and online. Prices subject to change without notice. Quantities are limited. Check with your local retailers for final price and availability.
Browse all of LG’s innovative, state-of-the-art computer monitors, including:
5K monitors. Take it up a notch with the LG UltraFine monitor, boasting an immersive 27-inch display with 5120 x 2880 resolution and 218 ppi that lets you experience the beauty of a MacBook or MacBook Pro on a large 5K screen. Add to that an unbelievable color spectrum of P3 99% and you’ll be editing and enjoying high-res photos like never before. Too much for you to handle? There’s an impressive 21.5-inch Mac-friendly 4K version as well.
21:9 Curved UltraWide monitors. These high-performance, feature-packed monitors are quite the multitaskers themselves, featuring UltraWide 21:9 resolution, 4-Screen Split, Mac-compatibility, Dual Linkup and stunning Full HD 1080p. They’re the perfect solutions for designers, photographers, gamers and other professionals who need more room for their big ideas.
IPS monitors. Boasting true-to-life colors, IPS computer monitors lessen color loss and help keep colors consistent at virtually any angle. The LED backlighting delivers deep black levels and rich colors for an amazing contrast and color detail.
Gaming monitors. Get panoramic multitasking and immersive gaming with features like a 144Hz refresh rate—the highest of any gaming monitor—plus a response time of less than 1ms (1/1000 of a second) in Motion 240 Mode. It’s the ideal monitor for real-time strategy and first-person shooters. Dynamic Action Sync lets you catch every single moment in real time, while LG’s Black Stabilizer brightens dark scenes so the enemy can’t hide. Get true-to-life color and brilliant clarity from virtually every angle.
TV monitors. Get Full HD 1080p entertainment from the TV, as well as your computer. With features like a built-in digital tuner and Dolby Surround sound, LG TV monitors can bring your favorite movies and TV shows to life, along with your favorite online content and games.
Discover the latest innovations in performance and technology with LG computer monitors—and choose one that fits your world. From 4K, IPS and gaming monitors, to TV, LED, UltraWide, UltraFine options and more. It’s time to make life good.