For those (like me) who purchased the Rk-box (aka Rocketbox) and are only getting 80 Gh or less from each blade, let me save you some time. As of right now, bfgminer (4.4.0) will hash slowly. You'll need to use Rockminer's customized cgminer to make it hash fast enough.  You can do it one of two ways:

1) Download (https://github.com/rockminerinc/cgminer) and on any Linux box, and compile using ./configure --enable-icarus to enable support for the rk-box. Trying to enable other ASIC types seems to make the compiling fail.

2) Download Rocketbox's custom Raspberry Pi firmware. An old one will hash slowly.  You'll have to get the most up to date one (1.2.1). An updated link should be on the first posting in this thread. Again, as of right now, Minepeon (0.2.4.6) will not work, so don't try it. I wasn't able to get the customized cgminer to compile on Minepeon either.

All told, not the most ideal situation, but that's what we have for now.  Hope this saves someone the time I took.