Mbox Mini (3rd gen) not connecting in High Sierra on old Mac Mini or new iMac
 

I have 12 old 2013 Mac Mini's running the new High Sierra OS
I also have a brand new iMac running the same OS
I randomly have some of them that will connect to the Mbox and some that won't. I have updated the Mbox driver, but when I open the Mbox software it says Hardware not connected.
However, Garageband uses the interface just fine. Pro Tools 11 sees the inputs as an Mbox and the outputs as a separate Mbox.
Of Garageband doesn't care if the driver is installed.

Some of the MacMini's are fine.
The only computers having issues are the ones where the Mbox window says it's not connected.