<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.eac660 ni mdhibiti wa ufikiaji mzuri ac iliyotengenezwa na yunke china teknolojia ya habari limited ambayo baadaye inajulikana kama dcn kwa mitandao isiyo na waya ya smb na matawi makubwa ya biashara.  <response>: the eac660 is a smart access controller ac developed by yunke china information technology limited hereinafter referred to as dcn for smb wireless networks and large enterprise branches. 