14-inch MacBook Pro 2023 M3 Connecting two monitors

I am trying to connect two monitors to my 14-inch MacBook Pro 2023. One via HDMI and the other via type C and I cannot get them both to connect. If one is connected the other won't but according to specs this M3 should support up to 4 monitors.

Posted on Oct 9, 2024 10:58 AM

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Posted on Oct 9, 2024 11:17 AM

That depends on exactly which processor you have.

The same rules we learned for the M1 and M2 still apply to the M3 models. Display interfaces are generated deep inside the system on a chip. How many there are depends on the exact type of Processor:


M3 (plain) like the 13-in and 15-in supports up to ONE External fully hardware-accelerated external display.

Except the M3 MacBook Air models with 13 or 15-in display, (and certain M3 plain MacBook Pro models when running 14.6 or later) which can support a second external display instead of the built-in display when you close the cover on the built-in display. This may require MacOS 14.6 or later


M3 PRO processor supports up to Two fully hardware-accelerated external displays.


M3 MAX processor supports up to Four fully hardware-accelerated external displays.


M3 ULTRA processor supports up to Eight fully hardware-accelerated external displays


Tech Specs now available here:


MacBook Pro - Tech Specs - Apple

MacBook Pro - Tech Specs - Apple


2 replies
Question marked as Top-ranking reply

Oct 9, 2024 11:17 AM in response to Nhazel01

That depends on exactly which processor you have.

The same rules we learned for the M1 and M2 still apply to the M3 models. Display interfaces are generated deep inside the system on a chip. How many there are depends on the exact type of Processor:


M3 (plain) like the 13-in and 15-in supports up to ONE External fully hardware-accelerated external display.

Except the M3 MacBook Air models with 13 or 15-in display, (and certain M3 plain MacBook Pro models when running 14.6 or later) which can support a second external display instead of the built-in display when you close the cover on the built-in display. This may require MacOS 14.6 or later


M3 PRO processor supports up to Two fully hardware-accelerated external displays.


M3 MAX processor supports up to Four fully hardware-accelerated external displays.


M3 ULTRA processor supports up to Eight fully hardware-accelerated external displays


Tech Specs now available here:


MacBook Pro - Tech Specs - Apple

MacBook Pro - Tech Specs - Apple


Oct 9, 2024 3:01 PM in response to Nhazel01

Nhazel01 wrote:

I am trying to connect two monitors to my 14-inch MacBook Pro 2023. One via HDMI and the other via type C and I cannot get them both to connect. If one is connected the other won't but according to specs this M3 should support up to 4 monitors.


Which processor chip is in your 14" MacBook Pro? Apple released both M2-family and M3-family MacBook Pros in 2023.


As outlined in the Technical Specifications, display support varies according to processor chip.

  • Models with a M3 chip only support one display with the lid open, two with the lid closed.
  • Models with a M3 Pro chip support up to two external displays
  • Models with a M3 Max chip support up to four external displays

The M3 Pro and M3 Max can support HDMI displays with very high resolutions or refresh rates, but only at the cost of reducing the total number of displays.


MacBook Pro (14-inch, M3, Nov 2023) - Technical Specifications - Apple Support

MacBook Pro (14-inch, M3 Pro or M3 Max, Nov 2023) - Technical Specifications - Apple Support

How many displays can be connected to MacBook Pro - Apple Support


You can tell whether you have a plain M3 chip even without a trip to System Information. Models with the plain M3 chip have two USB-C (Thunderbolt) ports whereas those with M3 Pro and M3 Max chips have three.

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14-inch MacBook Pro 2023 M3 Connecting two monitors

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