Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Mac Pro 2013 does not support more than two displays?

The advertising claims 6 monitors can be attached to the six MiniDisplayport-compatible Thunderbolt 2 ports.


No problem with my 2 HD 21" DVI screens-- the MDPort-to-DVI adapters work fine in the Thunderbolt ports.


Now we come to the 27" LG 4K UHD HDMI monitor, what we in the editing trade would call "the client monitor" because it has calibrate-able color.


First I tried the supplied LG HDMI cable direct.


No signal. Auto shutdown.


Then I try the MDPort-to-HDMI adapter, still on bus 0, while the work monitors share the Bus 1 pair. Because I know from research that you cannot support more than two monitors per Thunderbolt bus.


Okay! The 4K lights up, it's beautiful-- and now one of my dual work screens has gone dark.


Just three monitors, all adapters supplied by Apple. That's all I ask. It is promised in Apple specs.


Anyone else?


  • Loren


Mac Pro Rnd

Posted on Dec 15, 2018 12:08 AM

Reply
Question marked as Apple recommended

Are you following the direction here?

Use multiple displays with your Mac Pro (Late 2013) - Apple Support


Specifically note:


Connect a DVI display

Your Mac Pro (Late 2013) supports DVI displays using Mini DisplayPort to DVI adapters. Use a single-link DVI adapter such as the Apple Mini DisplayPort to DVI adapter for DVI displays with a resolution up to 1920x1200. Use a Dual-Link DVI adapter such as the Apple Mini DisplayPort to Dual-Link DVI adapter for resolutions up to 2560x1600.

Your Mac Pro (Late 2013) supports a total of two single-link DVI displays. If you connect a third DVI display using a passive adapter or a display using HDMI, it causes one of the three displays to become inactive.

Connect more than two DVI or HDMI displays

Mac Pro supports a total of two DVI or HDMI displays when connected via the built-in HDMI port or using the Apple Mini DisplayPort to DVI adapter. To connect additional DVI displays, use an active DVI adapter like the Apple Mini DisplayPort to Dual-Link DVI adapter. You can connect up to six active adapter DVI displays. This requires a powered USB hub since Mac Pro offers four USB ports and you need six USB ports to connect the Dual-Link DVI adapters.

Posted on Dec 15, 2018 12:53 AM

Similar questions

2 replies
Question marked as Apple recommended

Dec 15, 2018 12:53 AM in response to Loren Miller1

Are you following the direction here?

Use multiple displays with your Mac Pro (Late 2013) - Apple Support


Specifically note:


Connect a DVI display

Your Mac Pro (Late 2013) supports DVI displays using Mini DisplayPort to DVI adapters. Use a single-link DVI adapter such as the Apple Mini DisplayPort to DVI adapter for DVI displays with a resolution up to 1920x1200. Use a Dual-Link DVI adapter such as the Apple Mini DisplayPort to Dual-Link DVI adapter for resolutions up to 2560x1600.

Your Mac Pro (Late 2013) supports a total of two single-link DVI displays. If you connect a third DVI display using a passive adapter or a display using HDMI, it causes one of the three displays to become inactive.

Connect more than two DVI or HDMI displays

Mac Pro supports a total of two DVI or HDMI displays when connected via the built-in HDMI port or using the Apple Mini DisplayPort to DVI adapter. To connect additional DVI displays, use an active DVI adapter like the Apple Mini DisplayPort to Dual-Link DVI adapter. You can connect up to six active adapter DVI displays. This requires a powered USB hub since Mac Pro offers four USB ports and you need six USB ports to connect the Dual-Link DVI adapters.

Mac Pro 2013 does not support more than two displays?

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple ID.