Apple Details Expanded 4K Display Support Included in OS X 10.9.3

Apple today updated its 4K display support page following the OS X 10.9.3 update, detailing the enhancements that have been made to 4K display support.

Running OS X 10.9.3, the 2013 Mac Pro and the 2013 Retina MacBook Pro now support several new 4K displays, including the Sharp PN-K321, ASUS PQ321Q, Dell UP2414Q, Dell UP3214Q, and the Panasonic TC-L65WT600. Previously, only the Sharp and ASUS displays were officially supported.

There's a new section on display adjustments and Retina scaling, introduced to allow the resolution of 4K displays to be adjusted much like the display of the Retina MacBook Pro, improving the size and readability of text and other on-screen elements.

screenresolutions4k
The revamped support page also notes that both the Mac Pro and the Retina MacBook Pro are now able to support 60 Hz 4K output for the five supported displays, using multi-stream transport, a feature previously limited to the Mac Pro. With the higher refresh rates, response times for tasks like game playing and video editing will be improved. Detailed instructions are given for enabling the option:

MacBook Pro (Retina, Late 2013) or Mac Pro (Late 2013) also support 60 Hz displays using multi-stream transport (MST). These displays need to be manually configured to use MST. Follow the steps below to use the display's built-in controls to enable this feature.

- Sharp PN-K321: Choose Menu > Setup > DisplayPort STREAM > MST > SET
- ASUS PQ321Q: Choose OSD menu > Setup > DisplayPort Stream
- Dell UP2414Q and UP3214Q: Choose Menu > Display Setting > DisplayPort 1.2 > Enable
- Panasonic TC-L65WT600: Choose Menu > Display Port Settings > Steam Setting > Auto

Your Mac will automatically detect an MST-enabled display. However, your display may require a firmware update to support 60Hz operation. Please contact your display vendor for details. If your specific DisplayPort display is not listed above, check with the display's manufacturer for compatibility information.

First released yesterday, OS X 10.9.3 with enhanced support for 4K displays can be downloaded via the software update tool in the Mac App Store.

Popular Stories

iPhone 17 Pro and Air Feature

Two iPhone 17 Pro and iPhone Air Colors Appear to Scratch More Easily

Friday September 19, 2025 10:02 am PDT by
As reported by Bloomberg today, some of the new iPhone 17 Pro and iPhone Air models on display at Apple Stores today are already scratched and scuffed. French blog Consomac also reported on this topic. The scratches appear to be most prominent on models with darker finishes, including the iPhone 17 Pro and Pro Max in Deep Blue, and the iPhone Air in Space Black. Images Credit: Consoma ...
iOS 26

iOS 26.0.1 Coming Soon, Likely With iPhone Air and iPhone 17 Pro Fix

Thursday September 18, 2025 9:17 am PDT by
Apple is preparing to release iOS 26.0.1, according to a private account on X with a proven track record of sharing information about future iOS versions. The update will have a build number of 23A350, or similar, the account said. It is likely that iOS 26.0.1 will fix a camera-related bug on the new iPhone Air and iPhone 17 Pro models. In his iPhone Air review, CNN Underscored's Henry T. ...
iPhone 17 Pro Colors

iPhone 17 Pro Max Teardown Reveals Qualcomm's Snapdragon X80 Modem for 5G

Friday September 19, 2025 7:39 am PDT by
While the iPhone Air is equipped with Apple's custom C1X modem for cellular connectivity, all of the iPhone 17 models are outfitted with Qualcomm modems still. A teardown video shared on Chinese platform Bilibili today (via Reddit) appears to confirm the iPhone 17 Pro Max is equipped with Qualcomm's Snapdragon X80 modem in particular. The same modem is likely used in the iPhone 17 and iPhone ...
iphone 17 pro max techwoven

Here Are The Best Cases You Can Buy for Your New iPhone 17 and iPhone Air

Friday September 19, 2025 6:46 am PDT by
Apple's new iPhones launch today, and there are plenty of options to choose from when it comes to protecting your new device from drops and scratches. In this article, we're taking a look at some of the best options for iPhone 17, iPhone 17 Pro, and iPhone 17 Air cases, as well as a few charging accessories. Note: MacRumors is an affiliate partner with some of these vendors. When you click a...
iOS 26 on Three iPhones

iOS 26's Liquid Glass Design Draws Criticism From Users

Wednesday September 17, 2025 2:56 pm PDT by
It's been two days since iOS 26 was released, and Apple's new Liquid Glass design is even more divisive than expected. Any major design change can create controversy as people get used to the new look, but the MacRumors forums, Reddit, Apple Support Communities, and social media sites seem to feature more criticism than praise as people discuss the update. Complaints There are a long...
iphone 17 pro inside

iPhone 17 Teardowns Confirm SIM and eSIM-Only Battery Capacities

Friday September 19, 2025 8:39 am PDT by
YouTube channel REWA Technology today shared an iPhone 17 Pro teardown video, offering a closer look inside the model with a SIM card tray. We are still waiting for repair website iFixit to share a more comprehensive teardown of the latest iPhone models, but this video provides a good look in the meantime. The device features various internal design changes, including larger rear camera...

Top Rated Comments

brock2621 Avatar
148 months ago
C'mon apple, 4k display already!
Score: 14 Votes (Like | Disagree)
MagnusVonMagnum Avatar
148 months ago
No official Samsung U28D590D support? Arguably the most popular based on its price.

WTF does Apple need to "officially support" every stinking monitor being manufactured? That could get really ugly really fast trying to depend on Apple to release new drivers all the time when they cannot even keep their regular video drivers and 3D system up-to-date in a timely fashion. There should be a STANDARD that all 4k monitors support and Apple should then just support that standard, not this piece meal one-at-a-time approach.
Score: 8 Votes (Like | Disagree)
Houdini7 Avatar
148 months ago
Just don't try more than 2 monitors!

Lots of issues supporting more than 2 monitors (of ANY resolution)

10.9.3 broke support for more than 2 monitors for Many people.
Score: 5 Votes (Like | Disagree)
ianimate3d Avatar
148 months ago
I like the wallpaper they posted? Anyone know where I can download it?

Here it is in 7025 x 4008 :D

http://i.images.cdn.fotopedia.com/flickr-8133635853-original/Photography_Techniques/Image_editing/High_dynamic_range_imaging/The_road_to_Glenorchy_is_epic.jpg
Score: 4 Votes (Like | Disagree)
shurcooL Avatar
148 months ago
If I remember correctly they did the same thing with the MBP. Retina came to 13" first then 15".
You remember incorrectly. The first Retina MBP was 15". A 13" rMBP came out 4 months later.
Score: 3 Votes (Like | Disagree)
newagemac Avatar
148 months ago
Ok now I'm confused. Previously, Macrumors reported that 60hz support in 10.9.3 would only apply to the 15" Retina Macbook Pro. Now its just saying "Retina Macbook Pro". So does this apply to the latest 13" model or is some information being left off?
Score: 2 Votes (Like | Disagree)