Using 4K displays, 5K displays, and Ultra HD TVs with your Mac

HDMI

You can use 4K displays and Ultra HD TVs at the following resolutions and refresh rates via the built-in HDMI port of your Mac:

• 3840x2160 at 30Hz refresh rate
• 4096x2160 at 24Hz refresh rate (mirroring is not supported at this resolution)

With macOS 10.12 or later, MacBook (2015 and later) and MacBook Pro (2016 and later) support these resolutions and refresh rates over HDMI 1.4b using the USB-C Digital AV Multiport Adapter:

• 4096x2304 at 48Hz refresh rate
• 3840x2160 at 60Hz refresh rate (mirroring is not supported at this resolution)

MacBook (2016 and later) and MacBook Pro (2016 and later) support 60Hz refresh rates over HDMI when used with a supported HDMI 2.0 display, an HDMI Premium Certified cable, and a supported USB-C to HDMI 2.0 adapter.

Single-Stream (SST) displays

Most single-stream 4K displays are supported at 30Hz operation.

With OS X Yosemite 10.10.3 and later, most single-stream 4K (3840x2160) displays are supported at 60Hz operation on the following Mac computers:

• MacBook Pro (Retina, 13-inch, Early 2015) and later
• MacBook Pro (Retina, 15-inch, Mid 2014) and later
• Mac Pro (Late 2013)
• iMac (27-inch, Late 2013) and later
• MacBook Air (Early 2015)

With OS X Yosemite 10.10.3 and later, most single-stream 4K (4096x2160) displays are supported at 60Hz operation on the following Mac computers:

• MacBook Pro (2016 and later)
• Mac Pro (Late 2013)
• iMac (Retina 5K, 27-inch, Late 2014) and later

With macOS Sierra, MacBook (2015 and later) supports 4K (3840x2160) displays at 60Hz operation over DisplayPort.

Multi-Stream Transport (MST) Displays

These Mac computers support multi-stream transport (MST) displays at 60 Hz:

• MacBook Pro (Retina, 15-inch, Late 2013) and later
• MacBook Pro (Retina, 13-inch, Early 2015) and later
• Mac Pro (Late 2013)
• iMac (Retina 5K, 27-inch, Late 2014) and later

If you use a 60Hz MST display with the MacBook Pro (Retina, 15-inch, Mid 2015) with AMD Radeon R9 M370X graphics card or iMac (Retina 5K, 27-inch, Late 2014), only one additional Thunderbolt display can be supported. Learn more about Thunderbolt ports and displays.

You need to manually configure 4K displays 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 > Stream Setting > Auto

If your specific DisplayPort display is not listed above, check with the display’s manufacturer for compatibility information.

Your Mac will automatically detect an MST-enabled display. However, your display might require a firmware update to support 60Hz operation. Contact your display's manufacturer for details. 

Dual-Cable Displays

Some displays with resolutions higher than 4K require two DisplayPort cables to connect the display at full resolution:

• The Dell UP2715K 27-inch 5K display is supported by iMac (Retina 5K, 27-inch, Late 2014) and later and Mac Pro (Late 2013) running OS X Yosemite 10.10.3 and later.
• The HP Z27q 5K display is supported by iMac (Retina 5K, 27-inch, Late 2014) and later and Mac Pro (Late 2013) running macOS Sierra.

LG UltraFine Displays

The LG UltraFine 4K Display is supported on these Mac computers with DisplayPort Alt-Mode over USB-C:

• MacBook Pro (2016 and later)
• MacBook (2015 and later)
• iMac (21.5-inch, 2017)
• iMac (Retina 4K, 21.5-inch, 2017)
• iMac (Retina 5K, 27-inch, 2017)

The LG UltraFine 5K Display is supported on these Mac computers with Thunderbolt 3:

• MacBook Pro (2016 and later)
• iMac (21.5-inch, 2017)
• iMac (Retina 4K, 21.5-inch, 2017)
• iMac (Retina 5K, 27-inch, 2017)