I did too order the 'new' 10-port Anker (http://www.amazon.com/Release-Anker%C2%AE-Uspeed-Charging-Adapter/dp/B005NGQWL2), which is really 9+1. It ships with a 5A PS though which is good, and there were a couple postings stating that you can use all 10 ports.

I have one of the older 10-port Ankers today, though because the older PS was only 4A it get's problematic to use more than 8 Erupters on it.

We shall see, it should arrive sometime today.