Lenovo Open Box ThinkPad Edge E531 15.6" Notebook PC - 68855YU Windows 7 Professional 64 preinstalled through downgrade rights in Windows 8 Pro 64-bit Intel Core i3-2348M 2.30GHz Processor 3MB Smart Cache 2GB PC3-12800 1600Mhz DDR3 Memory 320GB 7200RPM SATA Hard Drive