Let me know if I’m missing something, this is for one of the charging stations, but:
The charging station must be powered, either via Thunderbolt or USB
It comes with a Thunderbolt, so it can connect to my android but not my computer (presumed power source)
It doesn’t come with a USB, I have to buy my own, so how do I power the charging station?
Mike
What “thing” are you talking about?
There are so many “things” in our world 
Sounds like a case of “batteries not included”
Thats life @Mike_Starr
I need fuel to power my car, but Ford doesn’t supply that for free!
I have an idea Paul!
Now there’s a solution Franz 
Lol I need to file a complaint with Nissan then because gasoline is not included 
joking aside, the issue is that the OP doesn’t know what to buy and also doesn’t know this is one of many products, and was not directed in creating the thread to be forced into asking a sensible qualified question. It’s hardly surprising with so little help a bad question is asked.
@Mike_Starr what is the exact model of the hub you have? If you can give that, from the dozens of products Anker makes, then someone can help look up what are its specs and suggest some chargers.
You probably want a 100W charger, Anker doesn’t make them (yet) and so your problem began.