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2020 MacBook AIR M1 (7 core GPU) + Dell WD19TB dock not working with external displays

Hi all,

Just wondering if anyone has figured this out yet? Recently purchased the MacBook, but was hoping the USB-C bus would support the displays through the Dell dock like our two other work PC's so we don't have to reorient all of our display ports every time we plug in.


https://www.dell.com/support/kbdoc/en-us/000124312/dell-thunderbolt-dock-wd19tb-and-apple-usb-c-hosts

Posted on Sep 22, 2021 7:30 AM

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Posted on Sep 22, 2021 9:21 AM

M1 Macs only support a single external display.

From: MacBook Air - Technical Specifications - Apple

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

  • One external display with up to 6K resolution at 60Hz"

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2020 MacBook AIR M1 (7 core GPU) + Dell WD19TB dock not working with external displays

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