The answers to your questions can all be found by asking sidehack here on the forum. The problem is that the design is his and not in the public domain. sidehack is not producing any more of the original one BM1384 chip USB stick miners known as the "Compac", but occasionally you can find them for sale on eBay, amazon, and on the forsale forum on this board.

sidehack has been producing two BM1384 chip USB stick miners known as the 2Pac. Check the message:

https://bitcointalk.org/index.php?topic=1764803.0

for details on which resellers are still selling them (I do not believe that sidehack is selling to individuals any more), or have them in stock.

sidehack is also working on some "pod" designs, one of which is based on eight ( 8 ) BM1384 chips, and is called the terminus. The terminus is not yet ready for prime-time, but it is progressing. Follow the thread here:

https://bitcointalk.org/index.php?topic=1845307.0

for more information about terminus and other "pod" miners.