CSL Central Unit Sprint H5231f comp. Windows 7 - 2x AMD 3400MHz, 4GB RAM, 500GB HDD, Radeon HD 7480D, DVD (Personal Computers) 3.0 stars out of 5 "height =" 12 "border =" 0 "/>
The hard drive is quiet as advertised. But there is a continuous background noise which is rather unpleasant, I think this is the case (low range) which amplifies the vibrations of the hard drive. The documents are in German, no translation not even in English. Windows registration key is not in the documents but affixed to the housing.