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22" Class UltraFine™ 4K IPS LED Monitor (21.5" Diagonal)

  • 22MD4KA-B

  • Black

Key Features

  • 4K (4096 x 2304) IPS Display
  • 219 Pixel Per Inch
  • P3 99% Color Spectrum
  • USB-C
  • Built-In Speaker
Ultra Clear 219 PPI 4K Display

Ultra Clear 219 PPI 4K Display

At 219 pixels per inch to deliver 4K resolution (4069 x 2304 at 21.5”), the LG UltraFine™ display lets you experience the definition and detail of a Mac on a large 4K 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 4K display.

USB-C Versatility

USB-C Versatility

One USB-C port can replace multiple ports for transmitting data, 4K video and power charging. It is also able to simultaneously charge mobile devices while charging your MacBook (up to 60W). In addition, three USB-C downstream ports (USB 5 Gbps) let you connect additional devices.¹

How to Connect the LG UltraFine 4K Display via USB-C cable

Recommended Connection with UltraFine 4K Display

Recommended Connection with UltraFine 4K Display

1. 13" / 15" New MacBook Pro (Late 2016) Or 12" MacBook Retina (2015~)
Check your release date of Mac devices

2. macOS Sierra 10.12.2 or later
Check your macOS version

3. Use enclosed 'USB-C cable' in the box
The USB-C Cable has 'USB mark' on the cable.

How to Connect LG UltraFine 4K Display with Your Mac

If your Mac has a built-in USB-C port, you can use LG UltraFine 4K only with the provided USB-C cable.

How to Connect LG UltraFine 4K Display with Your Mac
Ultimate Visibility

Ultimate Visibility

The LG UltraFine™ 4K 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 4K screen, which provides a more natural representation.²

Consistent Color and Clarity

Consistent Color and Clarity

This 4K high-definition monitor with IPS minimizes color shift and delivers detailed, accurate images on the UltraFine™ 4K screen. Color is consistent from edge to edge.

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™ 4K 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.³

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 21.5" Flat
Panel Type IPS
Color Gamut (CIE 1931) DCI-P3 99%
Color Depth (Number of Colors) 8bits, 16.7M
Pixel Pitch (mm) 0.11622 mm × 0.11622 mm
Response Time 12ms / 14ms GTG
Refresh Rate H-Frequency: 88~143kHz V-Frequency: 48~60Hz
Aspect Ratio 16:9
Resolution 4096 x 2304
Brightness 500 nits
Contrast Ratio 1200:1
Viewing Angle 178 / 178
Surface Treatment Anti-glare, 2H
USB-C Yes (x1, PD, DP Alt. Mode, USB3.1 Gen1), UHD@60Hz
Type Stereo Speakers
Audio Output 5Wx2 77dB (Based on LG Standard)
Type 150W Built-in Power
Input 100~240V, 50/60Hz
Normal On (EPA) 120W
Power Save/Sleep Mode (Max.) 1.2W
DC Off (Max.) 0.5W
USB port 3 downstream (USB-C)
HDCP HDCP1.4 / 2.2
Ambient Light Sensor Yes
On-Screen Control (OSC) Yes
Base Detachable Yes (One touch release button)
Tilt (Angle) Yes (Angle -5~25 degree)
Height (mm) Yes (range 0~110mm)
With Stand (WxHxD) 19.90" x 15.29" x 8.66"
Without Stand (WxHxD) 19.90" x 11.78"x 1.72"
Shipping Dimensions (WxHxD) 23.74" x 19.96" x 11.38"
With Stand Weight 12.35 lbs
Without Stand Weight 8.38 lbs
Shipping Weight 20.50 lbs
VESA® Size (mm) 100 x 100
Power Cord
USB Type C to C Yes (USB-C Passive Cable, 1.8m)
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
China CEL Yes
Limited Warranty 1 Year Parts and Labor
UPC 719192606708

What People Are Saying

Rated 5 out of 5 by from Beautiful Screen for new MacBook Pro I bought this recently to go with our new MacBook Pro. We use it for our wedding photography business. It was a breeze to set up, the colors are gorgeous and it has plenty of extra ports for drives, etc. It wasn't the cheapest on the market but we are happy that we made the investment!
Date published: 2017-11-07
Rated 5 out of 5 by from Perfect partner for my new 2017 iMac I do a lot of photo and video work as a hobby. I love the convenience of having a second screen for Photos while using Final Cut Pro on my primary screen. The colors are vivid and bright, perfect for photo editing. Best of all, the monitor was "plug and play" for USB-C port on the iMac.
Date published: 2017-10-28
Rated 5 out of 5 by from Best Monitor I Have Ever Bought Resolution matches macbook. Colors match macbook if not better. Connectivity is super easy and simple.
Date published: 2017-10-25
Rated 4 out of 5 by from Absolutely the best monitor I ever had" Functions recently with my MBP in dual configuration. Brilliant colours and good contrast. If I could daisy-chain them and they had a builtin webcam, I'd give them an extra star
Date published: 2017-09-26
Rated 2 out of 5 by from loose cable, poor software The USB-C to USB-C cable provided by LG is loose on each end. The monitor goes black and the laptop stops charging. It comes loose both at the rear of the monitor and at my laptop if I gently bump into the cable. LG has sent me two replacements that are exactly the same. LG has offered to have me send in the monitor for service but that won't correct the loose cable issue. The LG Screen Manager software for the monitor was not effective and interfered with other software so I deleted it months ago. I can't control the brightness.
Date published: 2017-09-23
Rated 1 out of 5 by from Won't work with Thunderbolt MacBook Pro The guys at the Apple store sold me this monitor along with a Thunderbolt-to-USB-C adapter. Sorry folks, this won't work unless you have a new-model MacBook with USB-C ports.
Date published: 2017-08-08
Rated 3 out of 5 by from Beautiful monitor, but may interfere with my WiFi. I've been using this display since December. It looks great and is a greta compliment to my new MacBook Pro. However, I've read how the 5K display interfered with WiFi, and I believe this one does as well. When I positioned it above and behind the my MBP, my WiFi signal was terrible. When I moved it to the side, it was better, yet very slow. When I removed it from the room, WiFi was back to normal.
Date published: 2017-03-12
Rated 3 out of 5 by from Nice Display, but buggy I bought this display when first released to go with my new MacBook Pro. It is very easy to connect, relatively affordable (at least at the discounted price), and the display quality is good. One big problem, though, is that it does not always wake up when I wake up my Mac. I sometimes have to unplug and reconnect the USB-C cable to get it to wake up. This happens less often now that I have moved my wireless hub further away from my computer (it was adjacent to it - now about 8 feet away), but it still happens. I suspect that this monitor has a similar shielding problem to that found on the 27" display. I'm surprised I have not heard about this.
Date published: 2017-03-05
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We're here to support you with our product.

View 22MD4KA-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.

 Is this monitor work with the Windows 7 ?

Asked by: Day2night
The LG 22" Class UltraFine™ 4K IPS LED Monitor (21.5" Diagonal), Model # 22MD4KA is a Plug-and-Play monitor. The need for a monitor driver is a common misconception since these drivers have not been relevant since Windows XP, as the Plug-and-Play standard has eliminated the need for them...^IFV
Answered by: LGJoel
Date published: 2017-11-14

Hi, is this monitor compatible with PC laptops? I have a laptop that has USB-C, Mini DP and HDMI. Could this connect through a mini DP out > USB-C in? I do not have TB3.

Asked by: juanbastos
I was hoping to hook it up to my PC (GForce 1080 card) - I tried a thunderbolt DP to USB c and it did not work. Support said ' the 22md4ka was only meant for mac with USB c and mac OSX sierra' - they did not know how to get it to work  That said, there must be some way/hack around it... It would be great to know if anyone has figured this out.....?
Answered by: sohojoe
Date published: 2017-10-24

Can this monitor support charging the 2016 MacBook Pro 15"?? 

Asked by: Ani95
Yes - i use this monitor display + charge my MBP 2016 15"
Answered by: sohojoe
Date published: 2017-11-05

The tech specs say "three USB-C downstream ports (USB 5 Gbps)", which would indicate USB 3. Early press reports of this monitor said that it was only capable of USB 2 speeds. Has something changed?

Asked by: RichardHD
Hi RichardHD. Regrettably, we cannot speak on early press reports for the LG 22" Class UltraFine™ 4K IPS LED Monitor (21.5" Diagonal), Model # 22MD4KA, but it is possible that either those early specifications were incorrect. Specifications are always subject to change which is why the company does not release preliminary specifications until they are finalized...^IFV
Answered by: LGJoel
Date published: 2017-11-05

Would this monitor be compatible with the Wacom Mobilestudio Pro via usb-c?

Asked by: Northender
The LG 22" Class UltraFine™ 4K IPS LED Monitor (21.5" Diagonal), Model # 22MD4KA-B is a Plug and Play monitor and has a USB-C/Thunderbolt™ port on it for connectivity to compatible devices...^IFV
Answered by: LGJoel
Date published: 2017-11-05

How do I connect speakers to this monitor?

Asked by: Bobec
We appreciate your interest in this monitor and its operations. This set does not have a speaker port, nor can it connect to any manner of speakers. Such should be connected directly to the computer instead.
Answered by: NeilE
Date published: 2017-11-05

can I use this Display with thunderbolt 2

Asked by: amedia7
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