Connecting MacBook can't extend multiple external monitors which mirror the same screen content

MacOS only supports single-stream transport (SST), which means it can only support an extended display over a single type-C MST hub. The second monitor will be a mirror image of the first monitor even the types-C MST dock has multiple display output interfaces.

The Windows operating system supports multi-stream transfer (MST) on supported computers and can support up to three extended displays via a single type-C connection.

An option for the requirement would be the WAVLINK USB universal docking station based on Displaylink or Silicon Motion graphic technology :

UG69PD2 Pro (Dual 4K@60Hz with charging function)

UG69PD25 Pro  (Triple 4K@60Hz with charging function)

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