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27" Class UltraFine™ 5K IPS LED Monitor (27" Diagonal)

  • 27MD5KA-B

  • Black

Key Features

  • 5K (5120 x 2880) IPS Display
  • 218 Pixel Per Inch
  • P3 99% Color Spectrum
  • Thunderbolt™3
  • Built-In Camera & Speaker
Ultra Clear 219 PPI 4K Display

Ultra Clear 218 PPI 5K Display

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

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.

The World’s First 5K Display with Thunderbolt™ 3

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 the LG UltraFine 5K Display via Thunderbolt™ 3 cable

Recommended Connection with UltraFine 5K Display

Recommended Connection with UltraFine 5K Display

1. 13”/ 15” New MacBook Pro (Late 2016)
Check your release date of Mac devices

2. macOS Sierra 10.12.2 or later
Check your macOS version

3. Use enclosed ‘Thunderbolt™ 3 cable’ in the box
The Thunderbolt 3 Cable has ‘Thunderbolt™ 3 mark’ on the cable.

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.

How to Connect LG UltraFine 5K Display with Your Mac
Ultimate Visibility

Ultimate Visibility

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

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

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

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

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

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® Qualified


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.

Screen Size 27" Flat
Panel Type IPS
Color Gamut (CIE 1931) DCI-P3 99%
Color Depth (Number of Colors) 10bit(8bit + A-FRC)
Pixel Pitch (mm) 0.11685 mm x 0.11685 mm
Response Time 12ms / 14ms GTG
Refresh Rate H-Frequency: 30~178kHz V-Frequency: 48~60Hz
Resolution 5120 x 2880
Brightness 500 nits
Contrast Ratio 1200:1
Viewing Angle 178 / 178
Surface Treatment Anti-glare, 2H
Thunderbolt 3 Yes(x1), 5K@60Hz, USB-C
Type Stereo Speakers
Audio Output 5Wx2 77dB (Based on LG Standard)
Type 200W built-in Power
Input 100~240V, 50/60Hz
Normal On (EPA) 140W
Power Save/Sleep Mode (Max.) 1.2W
DC Off (Max.) 0.5W
USB Up 1 upstream (Thunderbolt3)
USB port 3 downstream (USB-C)
HDCP HDCP1.4 / 2.2
Camera Yes
Mic Yes
Ambient Light Sensor Yes
Base Detachable Yes (One touch release button)
Tilt (Angle) Yes (Angle -5~25 degree)
Height (mm) Yes (range 0~110mm)
With Stand (WxHxD) 24.63" x 18.28" x 9.44"
Without Stand (WxHxD) 24.63" x 14.77" x 2.12"
Shipping Dimensions (WxHxD) 29.25" x 22.83" x 12.40"
With Stand Weight 18.74 lbs
Without Stand Weight 14.11 lbs
Shipping Weight 29.76 lbs
VESA® Size (mm) 100 x 100
Power Cord
Thunderbolt3 Cable Yes (Active Cable, 2.0m)
Easy Setup Guide Yes
Guides on Using Product Functions Yes
VESA design cover Yes
S/W Install CD Web Download
UL(cUL) Yes
CB Yes
KC Yes
EPA7.0 Yes
Thunderbolt3 Yes
Limited Warranty 1 Year Parts and Labor
UPC 719192613584

What People Are Saying

Rated 1 out of 5 by from The worst experience ever I bought the Ultrafine 5k display from Apple Store in Dubai and travelled to Bahrain. The display stopped working after few days and the device is not covered by warranty (There is no international warranty card in the box. It mention that it should be repaired in London!!!!) On top, of that there is no Authorized service place for LG in UAE. There is in Bahrain but repairing it cost loads of money.
Date published: 2017-10-17
Rated 4 out of 5 by from Great addition to MacBook Makes multitasking on MacBook so much easier. However, there are communication errors after every software update which requires disconnection and rebooting MacBook separately.
Date published: 2017-09-22
Rated 5 out of 5 by from only true USB-c HUB available, excel display excellent quality PLUS three Thunderbolt/USB-C available after powering the mac with the 4th port; multi-port USB-C ports are not available on current hubs
Date published: 2017-09-22
Rated 5 out of 5 by from Best monitor ever I bought this for my design business and now I can see all the details (colors, type, and etc.) I definitely recommend this monitor if you are in the design business.
Date published: 2017-09-22
Rated 5 out of 5 by from Absolute Clarity on 2 x 5K Screens with MB Pro 15" I purchased 2 of the Ultrafine 5K 27|" for my MacBook Pro when I decided a long overdue upgrade was in order. I'm glad I did. Firstly, I had concerns that the router was going to be an issue. However, after sales reassured me that the issue was with insulation and all models had been fixed. I went ahead and purchased. I use these monitors for editing of fine art, food photography and image restoration amongst other daily chores of a media agency. I am really pleased with how they work and perform. The extra USB ports on the back have been really helpful considering the new MacBooks have only 4 ports. These now allow me to add extensions. Between the MacBooks internal settings and LG's, you don't really need a third party color calibration tool. I would recommend the LG Screen Manager and found it quite helpful with my workflow on one of the monitor screens. To use the inbuilt camera, you must disable the camera on the MacBook first. LG's is okay and the sound is fairly clear. It's not my favourite part of this monitor and neither is it supposed to be. Again it will do the job. Overall 5 Stars for this monitor and if you r eitneh photography, design, or multimedia industry and using one of the new MacBook pros then this is for you.
Date published: 2017-08-29
Rated 5 out of 5 by from The eyes have it. I've held off buying this for months as a result of the reviews. It seems they are mostly around the ex-issue relating to router placements. Forget all that rubbish! This is an excellent companion monitor to the MacBook Pro. There is nothing as good in the market. Finally I've a monitor that is comparable to the Retina screen on my laptop. As a designer, this is essential. If you like your design work colour accurate and pixel-perfect, this is the monitor.
Date published: 2017-08-22
Rated 1 out of 5 by from would give 0 stars if I could 2nd one I've bought, will be the second I'm returning. First one would crash my mac all the time, second one won't power on.
Date published: 2017-07-14
Rated 2 out of 5 by from Easy to use but the quality not good After using for a monthly found dust inside the panel, which is usable but annoying
Date published: 2017-05-28
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We're here to support you with our product.

View 27MD5KA-B Product Support

Contact us for any support inquiries.


Ask your questions. Share your answers.
Please first review the detailed product information and help guides in the Product Support section for this product prior to posting a question.

How do I use the monitor's webcam for facetime when my mac is plugged in but the cover is closed?

Asked by: Matt212
More information would be needed about the MacBook and the setup to better assist. Please contact our customer Interactive Center at 800-243-0000 for additional support.
Answered by: NeilE
Date published: 2017-09-28

How do you get the flashing to stop, it's really annoying.  It only happens once in a while but it must stop!!!!

Asked by: MacUser1972
Many *many* Macs on Sierra have a problem with external monitors flashing, and/or going to black for a fraction of a second to multiple seconds. I encountered it on my brand new Macbook Pro 2016 15" , with both HDMI and DVI. For me, uninstalling SnapZPro seems to have been the solution.
Answered by: sieler
Date published: 2017-05-29

What is the resolution of the camera?

Asked by: imabuddha
Our offices, in the United States, do not have product information for Japan. In order to obtain such information, it is recommended to check our subsidiary’s website, at
Answered by: NeilE
Date published: 2017-07-20

i was confused by the apple store sevicer to use this for an mac air. so do i have any solution? or is there any way to change the output thunderbolt3 into HDIM without any influnse of the display?

Asked by: tq00i8e
The MacBook Air is not supported on a 27" display, because the MBA doesn't have the resolution support. Native resolution for an Early 2015 MBA would be 1440x900, for external display support it can handle a 3840x2160 which would be 4k.This 5k display is 5120x2880. So MBA is NOT compatible.
Answered by: MissKris
Date published: 2017-07-18

Is it 99% AdobeRGB?

Asked by: mltoris
Our offices, in the United States, do not have product information for Germany. In order to obtain such information, it is recommended to check our subsidiary’s website, at
Answered by: NeilE
Date published: 2017-10-07

wen buying this monitor at this time, will it be send or come with the upgraded hardware?

Asked by: sybe
Our offices, in the United States, do not have product information for the Netherlands. In order to obtain such information, it is recommended to check our subsidiary’s website, at
Answered by: NeilE
Date published: 2017-08-29

Is it available for sale in Best Buy?

Asked by: Marcos1
Hi Marcos1. The LG 27" Class UltraFine™ 5K IPS LED Monitor (27" Diagonal), Model # 27MD5K is only available through Apple...^IFV
Answered by: LGJoel
Date published: 2017-07-18

Is there any way to use a 5K monitor with a late model 2013 Mac BookPro with the following specs: - Intel Iris Pro 1536 Graphics Card - 15-inch Retina Screen - 2.6 GHz Quad Core i7 Intel Processor - 16 GB 1600 MHz DDR3 RAM    

Asked by: tommy8
No, it is only compatible with MacBook Pro 2016. 
Answered by: aoneptune
Date published: 2017-01-29
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