Ok folks, I just had one unit returned because the buyer couldn't figure out the ./configure command and why the --enable-hashfast flag was required on an Ubuntu controller.  He thought for sure these units ran the same way the AntMiners do  .  For reference, these units DO require some technical skill.  Please, please, please .... for the love of BTC make sure you understand how to get cgminer compiled and running before you purchase these units.

H@shKraker