A couple of things--How many standards can you attach to a full via a splitter?--
Or are you better off looking at something different going that route?
Are they upgradeable via Ubuntu, or do you have your update ppas installed to supersede them?
If Ubuntu updates, will it break the system?
Since the hash power is so low, will these be hardware upgradeable when a future version release becomes available, instead of just throwing them out?
You can run the node and mine at the same time, right?
Never dealt with asic, which is why I ask.
There is no real limit if you use a usb hub, but yea the point of these is a small low power device you can get started with mining and run in your house without worrying about the power bill. If your going to buy 15, you might as well get an s19.
The new images we will release we have further decoupled the futurebit specific OS bits from the underlying Ubuntu system, so you will be able to freely update it and install whatever you wish without fear of bricking it.