LG UltraFine 4K Display

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  • Overview

    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.

    Highlights

    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)

    Did You Notice?

    A single USB-C cable (included) supports 4K video, stereo speakers, and up to 60W of power. And with three built-in USB-C ports, it’s the perfect match for MacBook with USB-C port or MacBook Pro with Thunderbolt 3 (USB-C) ports.

    Apple Recommends For

    Photo and video editing, working with a multitude of windows, and watching high-resolution videos.

    What’s in the Box

    LG UltraFine 4K Display

    USB-C cable (1.8 m)

    Power cord

    Easy setup guide

    VESA cover

    Tech Specs

    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

    System Requirements

    Operating System: macOS Sierra 10.12.1 or later

    Connection: USB-C–enabled Mac

    Manufacturer Information

    Part Number

    Mfr. Part Number: 22MD4KA-B.AUSB

    UPC or EAN No.: 719192609617

    Warranty

    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.

    Warranty: One-year limited

  • 3.0 Average
    3 out of 5 stars
    Number of stars Percentage Number of reviews
    • 2.0 out of 5 stars

      Problems connecting two LG Ultrafines with new 15 inch MacBook Pro

      Connecting two of these LG Ultrafines with a new MacBook Pro 15 inch, there are a few major problems: 1) the MacBook will not charge when the two monitors are Connecting two of these LG Ultrafines with a new MacBook Pro 15 inch, there are a few major problems: 1) the MacBook will not charge when the two monitors are connected - it only charges after unplugging and replugging in the monitors a few times 2) only one of the monitors wakes up when the MacBook wakes from sleep - only by unplugging and replugging does the second monitor reconnect. It also appears that the MacBook will not charge via the Thunder bolt cable if the USB-C hub is being used for other peripherals (e.g., charging my iPhone). Considering that Apple unveiled the new MacBook Pro, showcasing a setup with two external LG Ultrafines, it's pretty disappointing that these basic functions don't work seamlessly. When you also consider there very high price for these items, it's not really acceptable. The monitors are beautiful (when they are working) - but I'm waiting to see if Apple fixes these issues fast - otherwise the monitors get returned. Apple Support don't know anything about the problem because it's too new.

      • Written by Peter R from Manhattan Beach

      195 of 219 people found this useful

      Is this review useful?Problems connecting two LG Ultrafines with new 15 inch MacBook Pro

    • 5.0 out of 5 stars

      Absolutely stunning display quality at a great price - but ONLY USB-C

      First of all, this is quite possibly the best 4K display I have seen in terms of color accuracy and detail. The display finish is similar to Apple's latest MacB First of all, this is quite possibly the best 4K display I have seen in terms of color accuracy and detail. The display finish is similar to Apple's latest MacBook Pros - clear, glossy but very little reflectance - the best of both worlds. Connected to my 2016 MacBook Pro with its native USB-C connector, the display is stunning. Another surprise? The built-in speakers on this monitor are amazingly clear, loud, and good quality, unlike most monitors. You can even feel the bass (to some extent - don't expect miracles). Now for the downside for all who had *hoped* they could connect this to older Macs with adapters. You can't. The specifications are very clear - this monitor requires a Mac with a native USB-C connector. Apple's Thunderbolt 3 to Thunderbolt 2 adapter doesn't provide DisplayPort pass through. And third party USB-C to DisplayPort 1.2 connectors don't handle the 4096x2304 resolution of this monitor. The monitor is simply not recognized by older Macs.

      • Written by Paul C from West Chester

      182 of 202 people found this useful

      Is this review useful?Absolutely stunning display quality at a great price - but ONLY USB-C

    • 5.0 out of 5 stars

      Works great with MacBook 12"

      Works great with 12" MacBook with included cable. Charges MacBook and functions as USB-C hub allowing connection of external drive for Time Machine, iPhone/watc Works great with 12" MacBook with included cable. Charges MacBook and functions as USB-C hub allowing connection of external drive for Time Machine, iPhone/watch/iPad, etc. (w/purchase of additional dongle). Internal display speakers sound ok but aren't great. Display looks awesome (zero stuck pixels and no other visible flaws I can see).

      • Written by John V from Glendale

      170 of 199 people found this useful

      Is this review useful?Works great with MacBook 12"

    • 2.0 out of 5 stars

      Monitor randomly turns off

      This is driving me crazy! I am running the LG 4k from my 6 month old 13" MacBook. The monitor intermittently turns itself off. To get it to turn back on, I h This is driving me crazy! I am running the LG 4k from my 6 month old 13" MacBook. The monitor intermittently turns itself off. To get it to turn back on, I have to unplug the power/USB cord from the Mac and plug it back in. There is no rhyme or reason as to why or when this happens. I thought it was a problem with the monitor so I packed it up and returned it to the Apple store where it was purchased. Second monitor has the EXACT SAME PROBLEM. The guy at the Apple store implied I was pulling too much power for my little Mac but I WAS TOLD THE LG4K WAS DESIGNED FOR THE MAC 13". I'm using all standard Apple cables. FYI, I'm hardwired, not wireless - if that for some reason is the problem (Apple says that's not it). I'd suggest you are rolling the dice buying this monitor, regardless of how good it looks.

      • Written by Eugene L from University Park

      3 of 3 people found this useful

      Is this review useful?Monitor randomly turns off

    • 1.0 out of 5 stars

      Backlight Failed

      After 6 months of use, the backlight failed.

      • Written by Wayne S from Carnation

      6 of 7 people found this useful

      Is this review useful?Backlight Failed

    • 3.0 out of 5 stars

      This is NOT a 4K display when used with Late 2016 MBP with touchbar

      I have used this display to augment the display of my MBP; the 4K Ultrafine is positioned behind and just above the display of my (open) MBP. I have had no flak I have used this display to augment the display of my MBP; the 4K Ultrafine is positioned behind and just above the display of my (open) MBP. I have had no flaky behavior like other posts, and the 60W charging works just fine, although a bit slower than the 87W supply that came with my MBP. I recently augmented the 4K Ultrafine display with a Trendnet USB-C to Gigabit Ethernet dongle. Similar to the displays, I leave both network interfaces active. I believe that the hardwire connection is preferred by the operating system, but I have not confirmed this. My only issue with this display is that OS X 10.12.5 and the Radeon Pro 455 graphics card will not drive the display at the resolution listed on this site. Since the connection is just USB-C, the display uses DisplayPort as the connection type and only gets a maximum of 2560 x 1440 @ 60 Hz with 30 bit color. The Radeon is also driving the Built-In Retina LCD at 2880 x 1800 with 32 bit color via DisplayPort. If you select "native" resolution for the 4K Ultrafine, it drives it at an even lower resolution.

      • Written by Matthew H from Friendswood

      2 of 2 people found this useful

      Is this review useful?This is NOT a 4K display when used with Late 2016 MBP with touchbar

  • Answers from the community