Which makes me wonder - are we going to also need a separate 5v power supply adaptor? Or is there such an adaptor that can convert one of the connectors from a PSU to that fitting?
Yes, I think you will need a 5v connector as well. I believe all ATX power supplies have them. When KNC announced the case, they mentioned the 5v connector as well as the 12v.
https://www.kncminer.com/news/news-28Have read this too, but I guess the 12V are the asic power supply.
Molex is 12V and 5V, so you have the choice =>
http://en.wikipedia.org/wiki/Molex#Molex_connectorDoes your psu have such a small 5V connector ? Did they mention we need anything in addition to the psu (except for the 'paper-clip') ?
Both no, isn't it ?
I think that's it. The molex to the right of the beaglebone is probably providing the juice (through the +5v red wire that you point out). So that's all good, will just be using regular PSU connectors.