ThinkCentre M73z 3/3 Warranty INTEL PENTIUM DUAL CORE G3220 Processor 2GB Memory 500GB HDD Windows 8 Pro 64bit DownGrade Windows 7 Pro 64bit with Windows 8 Pro 64 RDVD and License RAMBO_W7 INTEGRATED VIDEO Integrated Audio Lenovo USB Preferred Pro Full Size Keyboard Edge Mouse MONITOR STAND Internal Speakers WIRELESS COMBO N2230_AIO