Sonnet Allegro Pro 4-Port USB 3.2 Gen 2 Type-A in Precision 7960

I bought a Sonnet Allegro Pro 4-Port USB 3.2 Gen 2 Type-A card for my 7960 to give me a few more ports; only problem is, it doesn’t seem to work.  Plugging any USB device in results in nothing being detected.  I’ve tried moving it to different slots, no joy there either.  I’ve installed the relevant ASMedia drivers too.

Any diagnostic steps to figure this out would be appreciated.

It *could* be a duff card I guess…