@ManeBjorn
Just running one now but I plan on getting more. I would think if it runs one very well and not using a powered usb hub more on a powered hub should run just as good. I recommend using a 2.0 D-Link DUB-H7 powered usb hub. 3.0 has given some people issues depending on the miner and Rasberry Pi might not be 3.0 friendly from what I read.