My persons AudioBox USB 96 is now an expensive doorstop.
After Mojave it failed to appear as a usb device to the MacBook Air. I have now updated to Catalina. received an email today from presonus to notify that updates are available to fix Catalina problems.
I have installed latest universal control. cannot update firmware on AudioBox, because Mac can't see it.
The red light on the AudioBox comes on, but does not show up in Mac. have tried 3 different leads, and with and without USB Hub.
3 other devices are working fine through same USB Hub.