MacOS Sequoia Ethernet Sync only at 100Mbps

primacore wrote:

I have a M1 Macbook Pro with an external Dell dock (WD19TB) that has worked flawlessly until the Sequoia upgrade a few days ago. It appears that the dock's onboard NIC will not sync at 1000Mbps, only at 100Mbps.

Is anyone else seeing this? I had to shift to a USB dongle and it has no trouble at 1000Mbps on the same switchport.

I understand that the dock isn't an Apple product, but this is the first I've had any trouble since I bought the MBP, running Monterrey back then and upgraded through Ventura and Sonoma without a fault.

It doesn't support Sequoia.

From Dell's web site:

Supported Operating Systems​

Your Dell Thunderbolt Dock - WD19TB supports these operating systems:

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• Red Hat® Linux 8.0
• Ubuntu® 18.04 LTS
• Windows 10, 64-bit
• Windows 11

Note regarding operating systems not listed above:

Dell may not support an operating system for various reasons, including discontinued support from the software vendor, lack of availability with certain products, or other reasons.