The description says it has 300mA per port. That means you wont be able to overclock the stick much at all. You want one that gives around 2A per port.
Thank you for your answer. Wouldn't 1.2A be enough for the expected hashrate? I read it needed 750mA for a 3.4MH/s performance.
I then found some USB3.0 Hubs with 1.2A so I wonder if that fits the job.