http://mybookworld.wikidot.com/more_about_c&c/ ? If the MBWE requires tweaking to reduce heat/noise, then it's not relevant to this article's topic.

IMHO any ARM CPU (consuming lt 1Wt BTW) with decent amount of DRAM, some boot flash/ROM, USB host controller and Linux will do the job. And of course, it won't have no stinkin' WD drive connected to the mentioned USB controller when doing this, ever.