Please note the reduced compatibility of the intel Atom chipsets regarding 64bit Windows operating-systems. Up to now, intel does not provide appropriate graphics-drivers for these operating-systems. However, installation of 32bit Windows operating-systems is not a problem.
When using a 3,5" harddisk in this system, there is not enough room left for the integration of an expansion-card with a riser-card. This integration is only possible, when using 2,5" harddisks or SSD´s.