Solid performance, automatically recognized by the Linux Kernel Release 4.18.0-240.10.1.el8_3.x86_64.
Well packaged. Clean. Popped one of them into my Gigabyte Aorus mobo running Linux Centos 8 Stream. Came right up. No drivers needed. Have not yet had a chance to verify the 2nd one which also goes into a Linux server: I am expecting that it will perform just as well at the one I do have in production.