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I have a 13" 2020 M1 MacBook Pro (MBP).

I'm currently experiencing some issues with a third-party USB-C hub. I'm considering replacing it with a USB-C Digital AV Multiport Adapter. The page for the adapter, if read literally, suggests that the M1 MacBook Air (MBA) can drive 4K 60Hz video via this adapter, but the M1 MBP cannot.

Can anyone confirm that this adapter can transmit 4K 60Hz signal from an M1 MBP?

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Yes, it can, but you may have the old version of the Apple Digital AV adaptor. You need to make sure the adapter version is A2XXX, not A1XXX, since Apple updated that adapter in 2019 to support HDMI 2.0.

I have an M1 MacBook Pro and I can confirm the updated version of the Apple Digital AV adaptor does support a 4K 60hz HDMI connection.

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I just tried plugging a 4K monitor into my M1 MBP using that adapter, and it only gave me options up to 30Hz at 4K.

I also didn't see any M1 Macs listed in the 60Hz list. So I suspect that all the M1 Macs will only run at 30Hz using a 4K screen on that adapter.

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  • apple.com/de/macbook-air/specs and apple.com/de/macbook-pro-13/specs. This clearly states that the new M1 powered MBA and MBP can support a 6K 60Hz screen. This implies 4K 60Hz is supported too.
    – X_841
    Commented Mar 16, 2021 at 10:47
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    Not through that adapter, it doesn’t
    – Scott Earle
    Commented Mar 16, 2021 at 10:53
  • Sorry, I didn't mean to downvote, now I can't undo that unless you edit your answer. However, this seems ridiculous, yet you have the hardware... Really did not expect that.
    – X_841
    Commented Mar 16, 2021 at 10:57
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    My daily driver is an M1 MBP. I’m currently using a Caldigit TB3+ docking station and a DisplayLink dock to drive two 4K screens, because even the MacBook PRO only supports one external screen directly. And boy-oh-boy is DisplayLink a “workaround” and not a fix. I edited the answer to fix a simple typo
    – Scott Earle
    Commented Mar 16, 2021 at 11:15
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    Just for completeness sake: You must ensure that you're using a correct type of HDMI cable with the adapter. I have tried before that the wrong type of HDMI cable limits you to 30 Hz at 4k, where just changing the HDMI cable gives the new option of 60 Hz using this adapter. However, I have not tested it on the M1 MBP - I have only an Apple Silicon Mac Mini to test with here.
    – jksoegaard
    Commented Mar 16, 2021 at 11:54
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I can also confirm that 4k@60Hz is supported on a MacBook Pro (13-inch, M1, 2020, two thunderbolt ports) running macOS 12.0.1 (21A559), with the USB-C Digital AV Multiport Adapter A2119.

This is despite what the linked page says.

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