Hello all,
Been reading through a lot of the posts checking out the different group buys for mining hardware ( not realising I couldnt ask questions in the threads I was reading)- so here's a few newbie questions...
There is a group buy (by member canaryinthemine) where he's selling the asic miner USB devices for around 1 BTC. I was thinking of buying 10 . Am I correct that these are 333mh/s each- so 10 would be 3330 mh/s approx.   Can someone correct me if Im not understanding correctly- but I put 3330 into a mining calculator at current difficulty and it came out around 7 dollars per  day basically taking over 150 days to make the money back on the hardware ( assuming no change in difficulty-some chance!). can someone tell me why anyone is buying them-at least in bulk- I can understand 1 or 2 to play around?
Also- what type of hardware setup would be required to run lets say 10 of them stacked together? are there special types of USB hubs for them. Dont know much about the raspberry pi-can that run 10 of them? Any info appreciated.