That is not the exact USB hub he is using. It is actually the newer blue Block Erupter 49 port with a 50 amp fuse.

Here is a picture of that exact same board delivering 2.55 amps to an ML2 that was stock settings to determine amperage draw.

https://bit2dollar.com/image/cache/catalog/TurnKey/IMG_0884%20(2)-725x725.JPG

This a screenshot of the exact same hub running 9 ML2's at about 600 Mhz if I remember correctly.

https://bit2dollar.com/image/cache/catalog/TurnKey/9_ML2-725x725.jpg

And here it is running there exact same devices he is using and the exact same USB hub 6 @ 600 Mhz also.

https://bit2dollar.com/image/cache/catalog/TurnKey/6_ML2-725x725.jpg


My point is that the blue hub is shown on eyeboot to deliver .5 to 1 amp/slot but that is when considering all 49 ports being used. As you can see, the hub is very much capable of delivering the required amperage with the ATX Power Supply he has which has a rating of 50 amps on the 5 volt rail.

And, further, the exact same ML2's and the exact same hub and power supply he is using (i sold him the setup and those are the exact ones I sent him). Notice it had been running 19 hours when I took this screenshot and the core freq must have been around 756 to 800 or so since the hash rate was showing an average of about 4.5 Mhs

https://www.bit2dollar.com/image/6_796_ML2.jpg


Furthermore, that setup was able to reliably run ten on one hub during testing when dialed back to about 600 Mhz or so.


https://youtu.be/JZ7FsLkRQaw


I just wanted to add my experience with that hub and I know what it can and can't do.