I have a nanofury NF1 and have been running it quite successfully through my laptop for a few weeks. I also have one of the 335MH/s block erupters too so thought i would try them with a USB hub. I have a cheap 10 port powered hub I thought I would try and sure enough the nanofury didn't like this (not ample power supply once the fan and block erupter were added). So I bought a Plugable USB3 7 port hub which has a 4 amp power supply.

It seems to run fine for about 10 minutes through this hub but then does the same as my cheap hub and just starts giving errors. BFGminer just repeatedly flashes something like "NFY-old-buf - giving up after 4 tries" or something like that but I can't remember the exact phrase.

Heat is not an issue as there is a fan blowing over the setup and the ASICS don't even get warm. any suggestions?