The AHCI driver is from Apple, by the way, not me.
The chip on the controller card turned out to be an ASMedia chip, not the Marvell.
All my Marvell controllers are in an other country - which is now locked away.
I am allowed to enter it (have their passport) - but they would lock me away for four weeks the moment they see my eyes.
I can't travel through Czech Republic or through Switzerland - Italy - Slovenia - Croatia either, Austria is closed.
Duh. But in my current condition I don't want to travel anyway - and there is plenty of time to finish other updates.
But just FYI: there is much more to come in coming years.
The bridge, by the way, is from Moser, not PLX. P17C9X to be precise.
What is crazy: Moser has also PCI-X bridges. And the P17C9X is electrically PCIe x2. So they could use the wide connector with the same hardware.
Again, not much can be done if COVID-19 with HIV in team is attacking brains, avoiding respiratory tract and going to sit there for 70+ years.