The WD19TBS was never offered with any macOS drivers or macOS support. You should post the issue on the Apple Forum to get assistance from Apple users.
If it's an M1 CPU (not the M1 Pro), you're limited by the Mac to a single external display, regardless of the docking station. The M1 Pro CPU supports two.
The limited number of external displays supported is/was one of the tradeoffs in the change from Intel to Apple silicon.
DELL-Chris M
Community Manager
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56.9K Posts
0
March 22nd, 2023 21:00
The WD19TBS was never offered with any macOS drivers or macOS support. You should post the issue on the Apple Forum to get assistance from Apple users.
ejn63
10 Elder
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30.5K Posts
0
March 23rd, 2023 06:00
If it's an M1 CPU (not the M1 Pro), you're limited by the Mac to a single external display, regardless of the docking station. The M1 Pro CPU supports two.
The limited number of external displays supported is/was one of the tradeoffs in the change from Intel to Apple silicon.
sarayodell
2 Posts
0
March 28th, 2023 02:00
It is an M1 Pro - the first edition Apple released of the MacBook Pro with M1. How do I get the 2 external displays to work?