To properly experience our LG.com website, you will need to use an alternate browser or upgrade to a newer version of internet Explorer (IE10 or greater).
LG.com utilizes responsive design to provide a convenient experience that conforms to your devices screen size. In order to get the best possible experience from our website, please follow below instructions.
If you’re using Internet Explorer 9 or earlier, you will need to use an alternate browser such as Firefox or Chrome or upgrade to a newer version of internet Explorer (IE10 or greater).
At 218 pixels per inch to deliver 5K resolution (5120 x 2880 at 27”) the LG UltraFine™ 5K display lets you experience the definition and detail of a Mac on a large 5K screen.
Rich Color, Better Detail
A color spectrum of P3 99% enables you to edit your high-resolution photos precisely. You will experience exceptional detail and rich color on this 5K display.
5K Display with Thunderbolt™ 3
The LG UltraFine™ 5K display with Thunderbolt™ 3 port can transmit 5K video and data while simultaneously charging a new MacBook Pro (up to 85W) over a single cable. Plus, three USB-C downstream ports (USB 5 Gbps) let you connect additional devices as needed.¹
How to Connect LG UltraFine 5K Display with Your Mac
We recommend that you use the LG UltraFine 5K Display as a second monitor with Mac mini and Mac Pro, as the display might not turn on until you boot into macOS. As a result, pre-boot features such as Boot Picker and macOS Recovery might not be available on the display.
The LG UltraFine™ 5K display reaches a brightness of 500cd/m² and can express a wide range of color and contrast. You can experience vivid, lifelike images on a 5K screen, which provides a more natural representation.²
Consistent Color and Clarity
This 5K high-definition monitor with IPS minimizes color shift and delivers detailed, accurate images on the UltraFine™ 5K screen. Color is consistent from edge to edge.
Clear Communication and Entertainment
The LG UltraFine™ 5K display has an internal webcam and responsive speakers/microphone that are perfectly suited to entertainment and communication, allowing you to watch movies, and video chat.³
Easy Display Control with macOS
Detailed control of display settings such as brightness can be done using macOS without the need to use any physical buttons.
Multi-Function Screen Manager
The LG Screen Manager has been optimized for macOS to provide a variety of multi-screen options. For example, it can automatically divide the screen into two to four frames, according to users’ specific needs.
Convenient Adjustable Display Stand
LG UltraFine™ 5K displays have convenient height/tilt adjustment. Users can customize the display height to create a more personal, comfortable workstation, or easily wall-mount the display with the use of a VESA mount bracket.⁴
ENERGY STAR® certified monitors meet stringent energy efficiency requirements set by the US Environmental Protection Agency in On, Sleep, and Off Modes. On average, monitors that have earned the ENERGY STAR® are 25% more energy efficient than standard options.
Rated 5 out of
Extremely Nice MonitorPurchased to be a second monitor for my 2019 iMac 27" Retina computer. This display provides a perfect match to the iMac in terms of picture quality, richness and accuracy of color and resolution. I can put a high resolution picture on both monitors and they look identical. I require dual monitors for my work as well as to work with my astro-photos. This is a high quality display which integrates with the iMac so well that it seems to be a part of the original system.
Date published: 2019-12-08
Rated 3 out of
Uses too much power when Macbook is sleepingI had a power meter connected to the monitor and when I do not connect a Macbook when it is off it draws 1 watt. Which is reasonable. However if I connect my Macbook to the power outlet of the monitor it draws 25 watts when the battery is fully charged. I also connected a Chromebook and there also when its off and fully charged the monitor draws 25 watts! Any explanation here or is there maybe a firmware update that can fix this? I already run the latest firmware
Another problem is that waking up the screen and the mac can take quite a while, which is frustrating.
To end on a positive note. The image quality of the screen is fantastic
Date published: 2019-11-11
Rated 5 out of
supreme user from
Great monitorI bought this about a year ago. I had none of the issues that others had.
Rarely bottom left flickers but goes away when heats up. Great image quality. No problems with my 4th gen Macbook Pro.
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.
will this work on a Windows 10 PC?
Asked by: bill000
The LG 27'' Class UltraFine™ 5K IPS LED Monitor (27'' Diagonal), Model # 27MD5KA is officially unsupported on Windows 10 but it can mostly work with a Windows PC that supports Thunderbolt™3. What might not work on a PC with Windows 10 is the brightness adjustment, reliable USB device recognition on hot-swaps or the webcam...^IFV
Answered by: Ivanf
Date published: 2020-01-14
Is there a way to order a replacement stand for this monitor?
Asked by: ioop
Parts and accessories can be obtained through our parts distributor, Encompass Parts. Their contact number, for placing orders and pricing information, is 866-779-7906. You can also use their website, at https://www.encompassparts.com/ ^CP
Answered by: ChrisPSM
Date published: 2019-07-21
is this monitor compatible with new the mac mini os majave ?
Asked by: tee man
The LG Screen Manager application that provides a monitor software update feature can be downloaded and installed from the Apple store for the LG 27'' Class UltraFine™ 5K IPS LED Monitor (27'' Diagonal), Model # 27MD5KA. Supported OS: macOS 10.13, 10.14
App Store URL: https://itunes.apple.com/us/app/lg-screen-manager-lg-monitor/id1142051783 ...^IFV
Answered by: Ivanf
Date published: 2019-07-18
I can't get macOS to recognize the camera in my monitor. I have tried updating everything, I have downloaded the LG Manager and it did nothing, and this is very frustrating that such a basic function isn't working on a $1k+ monitor.
Asked by: TiredofThisMonitor
Same with mine, Camera light turns on but no video. Only purchased 5 days ago. LG is there a fix?
Answered by: ml2019
Date published: 2019-06-27
Why won't the screen go to sleep? It goes black but won't go to sleep.
Asked by: Hunt4868
We are sorry to see you are having trouble with your monitor. For best assistance, give our computer specialists a call at 800-243-0000. ^CP
Answered by: ChrisPSM
Date published: 2019-03-04
noticeable white horizontal lines flash on and off on the right side of monitor, distortion of video. I'm using a 2013 macpro with an official apple adapter, not official mac thunderbolt 2 cord, just ordered an official cord though.
Asked by: snowychi
Hello and sorry to hear, that doesn't sound right. Please give us a call at 1-800-243-0000 when you are with the unit so we can help out. ^AC
Answered by: Amber C
Date published: 2019-01-29
Hi, I have the Thunderbolt 3 version of this monitor and want to connect it to my Macbook Pro from 2015 with Thunderbolt 2. Is it possible? Also, is it possible to convert this Thunderbolt 3 into any mini display port?
Asked by: valley85
The use of Thunderbolt 3 to Thunderbolt 2 cable is possible. You can buy one directly from Apple. ^AC
Answered by: Amber C
Date published: 2018-12-18
Can this monitor be used with a Linux system with Nvidia Quadro P5000 16GB graphic card?
Asked by: Don123456
All monitors work with all graphics cards. You need to check the output on your computer and see what kinds of ports are available (if you have a dedicated video card, you’ll want to look at those outputs). Then, make sure that the monitor features the same type of ports—if it doesn’t, you’ll need some sort of adapter or special cable. The LG 27" Class UltraFine™ 5K IPS LED Monitor (27" Diagonal), Model # 27MD5KA has a resolution of 5120 x 2880 and features a Thunderbolt™3 port which can transmit 5K video and data while simultaneously charging a new MacBook Pro (up to 85W) over a single cable. Plus, three USB-C downstream ports (USB 5 Gbps) let you connect additional devices as needed...^IFV
Unable to compare products. Click "clear all" to compare different product types.
*Parts and accessories shipping cost may vary.
*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 the ultimate multitaskers. Featuring UltraWide 21:9 resolution, 4-Screen Split, Mac®-compatibility, Dual Linkup and stunning Full HD 1080p. 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 to keep colors consistent at virtually any angle. The LED backlighting delivers deep black levels and rich colors for an amazing contrast and color detail.
4K monitors: Digital cinema 4K resolution provides crisp images with a significant number of pixels on screen. 4K resolution displays over four times the resolution of standard 1920 x1080 FHD, and over half a million more pixels than UHD resolution, which means you can view even the finest details clearly.
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 gaming, TV and computer monitors from LG, including 4K, ultra-wide, IPS, LED and more. See how we’re making life good.