This MacBook Pro has only two USB-C ports. Since one is used to charge the laptop (the monitor can't charge the laptop), there is only one available port to plug a monitor.

Is it possible to connect two external monitors, for example with a hub? If so, can we have 4K resolution for at least one monitor?


To get two external monitors on your 13" MacBook Pro, you need

Both displays can support 4K at 60Hz. From Apple's technical specifications page:

Video Support

Simultaneously supports full native resolution on the built-in display at millions of colors and:

  • One display with 5120-by-2880 resolution at 60Hz at over a billion colors

  • Up to two displays with 4096-by-2304 resolution at 60Hz at millions of colors

  • Up to two displays with 3840-by-2160 resolution at 60Hz at over a billion colors

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    This answer allows to connect one external monitor only. We still don't know when using a hub, if it impacts the maximum resolution (2 monitors into one USB-C channel).
    – Kwadz
    Apr 18 '18 at 13:35
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    @Kwadz. Incorrect. You have two ports. One gets the hub with power pass through and the second port gets the cable. To connect two monitors you need to use both ports.
    – Allan
    Apr 18 '18 at 13:37
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    Got it, so you mean we use one USB-C from the laptop to connect a first monitor and the HDMI of the hub to connect a second monitor. I imagined both monitors connected with Display port, that's why I didn't get you first time. Anyway by using the two ports of the MacBook the max resolution won't be affected. Thanks.
    – Kwadz
    Apr 18 '18 at 15:08

Given that a pair of monitors are not engineered to 'daisy chain' (see below), you must use an adapter. There are many options for purchase, some can provide a wide array of I/O options for different cable types, and some that simply output to 2 HDMI connections (and allow for 4k signal). Assuming your monitors have HDMI inputs, that would be your more basic solution. You would want to do a product search for "thunderbolt 3 to dual HDMI adapter".

If in the future you get monitors with thunderbolt ports, you would be able to use them for daisy chaining a spectrum of configurations, as shown in this infographic.

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