Anker makes good stuff so I trust them when they say this will support 4A, so it should run up to 8 units per. USB 3.0 is overkill but I expect I'll get some different use out of it someday, and there didn't seem to be a cheaper USB 2 alternative w/high power anyways.
Actually, it's 12V@4A. USB is 5V. It's best to measure power (Watts) in this case. 12V@4A provides the hub with 48W of power. Each Block Erupter stick consumes 2.55W, or 25.5W for 10 sticks. That's well within spec for the hub.
But don't take my order for it, the product description lists the limits:
For maximum performance, connected devices should not exceed a combined current of 7A. Otherwise, output current may become unstable or disconnect entirely.
10 sticks will only draw 5.1Amps at the ports.
That said, anything could happen when the metal hits the electrons, so time will tell.
