I've actually had some time to try out a couple of powered USB3 hubs with my RPi4 + SV305Pro.

One is an Anker 7 port with a dedicated "power" port. that has an undersized barrel jack, yet still takes 12v. With this one, I was able to power the RPi4 through the charging port as well as connect the SV305Pro. Once I fabricobbled an adapter, it worked like an absolute dream. No issues whatsoever. I'll be picking up a couple more of these to simplify moving from rig to rig.

The other was a GEKRY 7 port, that supposedly is able to do what the Anker can on its last port, on every port. However, the RPi refused to boot or connect to the wifi while being powered by the hub and having the hub connected to its USB type A port. When powering the RPi from a separate 12v-5v dc-dc converter, I was able to connect the SV305Pro through the powered hub to the RPi4. But every few frames, one would come out over-exposed, and nearly all gray. PHD2 did not like this at all, and I had issues guiding.

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