I have a few of these and the quality control seems nonexistent.  A couple of them run at the advertised speed but others are very unstable and/or are mining below advertised performance (130-180 GH/s).  Two of them arrived with no power cables for the hash modules and FPGA controller and some of them are also missing case screws and the case screw hole threads are stripped on other units.  I will post a more detailed review outlining the performance and issues with each unit I received when I get the missing parts but in the meantime I strongly caution buyer beware for this vendor.