SFP+ 10Gbe Networking: which card is working?

[levifig]

Chelsio T520 cards are supported on macOS: Just install the driver from the manufacturer's website. The Catalina driver works in Big Sur.

I have only tested the T520, but I suppose that the T4 and T6 generations work as well. I'm just not ready to upgrade my network to 25 GbE or 100 GbE yet.

FWIW, I have a T420-CR and the Catalina driver worked fine in Big Sur but does not work in Monterey. I have yet to find a solution or workaround to this…