You are right. The devices need to power themselvesIt will likely depend upon whether or not the drive enclosure is providing power to the hub ports. If so, I would expect your suggested setup to work fine. If not, I think any devices plugged into the hub ports will need to be powered.
my2sense![]()
If you connect a USB hub to the base station, you can connect multiple hard disks to it, and access them from the wireless network.