LG UltraFine 4K Display
With a stunning 4096-by-2304 resolution, the 21.5-inch LG UltraFine 4K Display brings your favorite photos and videos to life. So whether you’re watching a movie or editing an image, this high-performance monitor delivers immaculate 4K resolution for even the most pixel-packed visuals.
A single USB-C cable (included) provides up to 60W of charging power to your MacBook with USB-C port or MacBook Pro with Thunderbolt 3 (USB-C) ports. And three downstream USB-C ports (480 Mbps) offer additional connectivity and power to compatible devices and accessories.
Built-in stereo speakers deliver an enhanced audio experience. And with over 9.4 million pixels, your text, photos, and web pages will look sharper and more vivid than ever.
Outstanding image quality
The UltraFine 4K Display features a 21.5-inch IPS panel, P3 wide color gamut, and 500 cd/m² of brightness. And with over 9.4 million pixels — 4.5 times more than a typical 1080p HD display — the human eye can’t discern the individual pixels.
A perfect complement to your MacBook or MacBook Pro, the UltraFine 4K Display gives you plenty of room for a multitude of tools and windows, while rendering incredibly lifelike images and razor-sharp text instantaneously.
Simplified user experience
Connect the UltraFine 4K Display to your MacBook or MacBook Pro via an included USB-C cable, which supports 4K video, audio, and data simultaneously — all while supplying up to 60W of charging power to your MacBook or MacBook Pro. And with seamless macOS integration, you can control volume and brightness on your 4K display without the need for physical buttons.
Use the adjustable stand to create a personalized environment for work or play. Or disconnect the stand and mount the display on your preferred VESA arm using the provided VESA cover.
Outstanding image quality
Over 9.4 million pixels
Built-in stereo speakers and three USB-C ports (480 Mbps)
Video, data, and power over a single USB-C cable (included)
What’s in the Box
LG UltraFine 4K Display
USB-C cable (1.8 m)
Easy setup guide
Display Size: 21.5-inch (diagonal) 4K display with IPS technology
Resolution: 4096-by-2304 with support for millions of colors
Brightness: 500 cd/m²
Color Gamut: P3 wide color gamut
Ports: One USB-C (input), three USB-C (USB 2, 480 Mbps)
Power Delivery: Up to 60W over USB-C for host power and charging
Speaker Configurations: Stereo
Power: Built-in power supply
Height: 15.3 in./38.8 cm
Width: 19.9 in./50.5 cm
Depth: 8.6 in./21.9 cm (with stand), 1.7 in./4.4 cm (without stand)
Weight: 12.3 lb./5.6 kg
Operating System: macOS Sierra 10.12.1 or later
Connection: USB-C–enabled Mac
Mfr. Part Number: 22MD4KA-B.AUSB
UPC or EAN No.: 8806087930788
Note: Products sold through this website that do not bear the Apple Brand name are serviced and supported exclusively by their manufacturers in accordance with terms and conditions packaged with the products. Apple's Limited Warranty does not apply to products that are not Apple-branded, even if packaged or sold with Apple products. Please contact the manufacturer directly for technical support and customer service. The documentation and packaging for this product is in English.
Answers from the community
Is it possible to connect 3 of these without connecting all three directly into a 2017 macbook pro?
- Asked by christopher B from Sherman
- on 25-Oct-2018
Can you daisy chain this from the LG UltraFine 5K Display?
- Asked by Jeremy F from San Francisco
- on 10-Sep-2018
No. The LG UltraFine 5K Display is a Thunderbolt 3 display which uses both DisplayPort connection No. The LG UltraFine 5K Display is a Thunderbolt 3 display which uses both DisplayPort connections of the computer's Thunderbolt controller. The Thunderbolt controller sends both DisplayPort signals to the Thunderbolt controller of the LG UltraFine 5K over the Thunderbolt cable. The Thunderbolt controller in the LG UltraFine 5K converts both Thunderbolt DisplayPort streams back into DisplayPort to be used by each half of the display (the left and right sides) to support 5K resolution. That is also the reason why the LG 5K display does not have a second Thunderbolt 3 port - because it is required for one of the DisplayPort signals for one half of the display. The other DisplayPort signal comes out of a DisplayPort connection of the Thunderbolt controller of the display (think of a Thunderbolt 3 dock where you can connect one display to the second Thunderbolt 3 port of the dock, and another display to a DisplayPort output of the dock). The Thunderbolt controller of the computer does not have a third DisplayPort connection, and since the LG 5K uses two DisplayPort connections (over Thunderbolt), an LG 4K display cannot be daisy chained to the LG 5K display. Also, since a Thunderbolt controller only has two DisplayPort connections, if you connect a LG 5K to one side of the MacBook Pro, then a second display must be connected to the other side of the MacBook Pro (there's one Thunderbolt controller per side of the MacBook Pro). One 5K or two 4K per side of the MacBook Pro can be connected. The USB-C ports of the LG UltraFine 5K only support USB. They do not support DisplayPort because there is no other DisplayPort signal on the Thunderbolt cable that can be used and the display has no other DisplayPort inputs. It might be possible to use a USB to DisplayPort converter (research devices that use DisplayLink, find examples at the DisplayLink or plugable websites) but they don't perform like real displays and may have issues in macOS.
- Answered by Joseph V from Fort Langley
- on 11-Sep-2018
Can I connect an Apple 4k TV to this display?
- Asked by Benjamin W from Aspen
- on 30-Nov-2017
How do I turn on the display. I can't find a switch and screen doesn't com on when plugged in!,
- Asked by hugh T from La Jolla
- on 20-Nov-2016
It turns on with your MacBook Pro. There are no controls on the display itself.
- Answered by David G from Indianapolis
- on 02-Dec-2016
Is this display compatible with the previous generation of Retina MacBook Pros?
- Asked by Alex C from Palm Harbor
- on 28-Oct-2016
As far as I can tell, it is not. I have a mid-2015 15" macbook pro with retina display, 2.8 GHz Inte As far as I can tell, it is not. I have a mid-2015 15" macbook pro with retina display, 2.8 GHz Intel Core i7 processor, 16 gb of ram and Intel Iris Pro 1536 MB graphics card. I've tried it with TB 3 to TB 2 convertor and an HDMI cable, a USB-C to mini DisplayPort convertor and mini DisplayPort cable, and USB-C to 4k HDMI convertor with HDMI cable / port as well, all with no luck. The mac does connect to an old TV using the HDMI cord, so I don't think it's an issue with the mac. The plan from here is to call LG support and find out if there's ANYTHING I can do that will allow me to use the monitor with the mac. Otherwise, I sure hope they'll take it back at apple, since my company bought it and I've already discarded the box. I'll update this answer if I find any combination that works.
- Answered by Emily J from Fort Collins
- on 11-Dec-2016