Thanks Philipma1957.
My next question I guess is hard to answer since these aren't in the wild yet but what RaspPi image will work best with these?
I used RASPBIAN (Debian Wheezy) and then compiled cgminer with --enable-blockerupter. The default speed is --bet-clk 23 (which will run the prisma at 240 Mhz). On a tube, you need to set it to --bet-clk 26.
links:
http://www.raspberrypi.org/downloads/https://github.com/ckolivas/cgminer