wow very impressive 
hope you dont mind me asking a few questions 
are you running that off the raspberry pi in the lower picture? and if so how are you configuring the USB? (something like PI>>un-powered hub>>powered hubs/ants?)
also did you have to do the resistor swaps to get the speed above 2Gh/s?
and did you have to direct wire the hubs? and chance of a link to the info or pic
thanks in advance
hope you dont mind me asking a few questions are you running that off the raspberry pi in the lower picture? and if so how are you configuring the USB? (something like PI>>un-powered hub>>powered hubs/ants?)
also did you have to do the resistor swaps to get the speed above 2Gh/s?
and did you have to direct wire the hubs? and chance of a link to the info or pic
thanks in advance
Yes, its running on/with raspberry. I not configured USB, I used the Minepeon-Image and only updated bfgminer on 3.10.0. So far I not touched resistors. The Hubs are connected through a fifth HUB with 4 ports with usual USB-Cables, Power-Connection for HUBs I soldered directly on the HUB-Boards on the original Power-Connector.