Yep. They are covered here.
I recently found and ordered one for ~$85 USD on Amazon, and it’s on its way via a reasonably fast boat from China. Should get it within next week or so.
Hopefully it works OK, with good stability.
( I want it for my main Linux workstation - an ASRock X670E Steel Legend - so I can free up the PCIE x4 slot for a Thunderbolt 4 or 40 Gb Mellanox card).
Like most/all ( reasonably X670 'boards, it has way too much PCIE Gen5 and M.2, and too few physical x16 PCIE slots… )