HTH others who ran into a seemingly unresponsive usb2 camera hub.

I run SM OS on a Pi 4 8Gb via SSD usb drive. The Pi is strapped to a tripod leg. PPBA is attached to my scope and powered by 12V 10A source.
PPBA out connects to usb3 port on the Pi. ASI385MC-cooled out connects to usb3 port 1 on the PPBA. ASI120MM-mini and ZWO EAF
both connect to usb2 ports on the ASI385MC. The ASI120 and the EAF are not recognized by Indi in this configuration.
Here is the reason:
This information is from the Pegasus Astro web site and is not in the pdf manual v1.1 that I have.
I was going around in circles trying to figure out why the ASI120 and the EAF would only be recognized by Ekos
if I plugged them into the usb2 ports on the PPBA. The solution is to NOT connect the ASI385 to the usb3 only
port on the PPBA (port 1), but rather to plug it into one of the three usb2 capable ports.

I opted to just connect the camera to the Rpi and connect everything else to the PPBA