Thanks all for the replies.

There is an mechanical adapter for some types of cards to hold them aligned.

I see that the one with external black protrusion has a hole for power
and the newegg says a power module is included.

On Amazon there is a mixed bag of customer feedback ranging from it
being junk to it works to there are no drivers provided.

Probably because laptops do not have this slot any more the mfrs just
don't want to spend the time advertising correctly and even supporting
these things.

At least on Amazon the prices are very low and maybe I will take a
chance and try.