HP Z400 6-DIMM Workstation, HP Z400 6-DIMM 475W 85% Eff. Chassis, MS Windows 7 Professional 64-bit OS, HP Int Xeon W3565 3.20 8MB/1066 QC CPU, HP 4GB (2x2GB) DDR3-1333 ECC RAM, HP No Graphics Option, HP 160GB SATA 1st SSD, HP USB Standard Keyboard, HP USB Laser Scroll Mouse, HP  No Floppy Disk Option, HP 16X DVD+-RW SuperMulti SATA 1st Drive, HP 22-In-1 Media Card Reader, HP USB3.0 2x2Port SuperSpeed PCIe x1 Crd, Windows 7 OS WW Recovery Media, HP Air Cooling Solution, HP Z400 Localization Kit,