I was reading “Beaglebone AI Survival Guide” and although is not
directly for the AI it works well and supplies its own power with the
D.C. blocked from going back into the BeagleBone Black.
I have been using it without problems with Debian 9 with as many
as 3 devices at the same time including WiFi adapter, SD-Card
reader and USB Flash drive. (I ran out of devices)
This powered hub relieves the BBB from having to supply power.
Which is nice when using a power hungry WiFi adapter.
You could probably also use it as a charging station with its 2.5 Amp power.
One source:
https://www.amazon.com/Plugable-Charging-Adapter-Support-Android/dp/B005P2BY5I/ref=sr_1_14
Manufacturer is Plugable, part # USB2-HUB4B