Your second link does not work (page not found) but the OP is shipping the devices with a USB 2.0 connector so even if your hub is 3.0, the miners will not have the additional pins to the USB 3.0-specific protocol. But the 3.0 only if you want future proofing but I would recommend getting the USB 2.0.
Actually you WANT a 3.0 hub, since these hubs are usually rated for 1+ Amps. Even though the miner does not use 3.0 data speeds, it does pull alot of power for USB obviously, so a 2.0 hub might not provide enough power.
Thank you for the clarification, I deleted my message to avoid confusion but can you please clarify/recommend what to use to get the maximym power?
From what I gathered in the OP @ 1.5W per MH/s:
| Hashing Speed | Power | | Amps |
| 2 MH/s | 2 x 1.5 W = 3 W | | 3 W / 5V = 0.6 A |
| 3 MH/s | 3 x 1.5 W = 4.5 W | | 4.5 W / 5V = 0.9 A |
| 5 MH/s | 5 x 1.5 W = 7.5 W | | 7.5 W / 5V = 1.5 A |
| 6 MH/s | 6 x 1.5 W = 9 W | | 9 W / 5V = 1.8 A |
It seems that a normal USB 3.0 with 900 mA can only drive the unit at 3 MH/s steady state, anything above that will need a powered USB hub as "Y" cables don't work in USBs.
The hub in the amazon link was 7 ports 60 W = 8.5 W per port so it can drive the unit up to theoretical speed 8.5 / 1.5 = 5.7 MHs
Is this correct?
Question 2In your demo screen the title bar states ... "ethminer" can these sticks be used for anything other than scrypt?
The 1.5w/MH figure does not scale. For example at about 3MH its 1.3w/MH, but at 5 MH it approaches 2w/MH. The 6MH is also not sustainable long term...that was me just showing how far the hardware can be pushed.
Ethminer is just the hostname of one of my dev systems (that also happens to mine ethereum with its GPU). Has nothing to do with this stick and it can only mine scrypt coins.