LENOVO ThinkCentre M57e 5054 AMD DualCore 2.8GHz, 8G DDR3, 250G, DVDRW, Windows 7 Home AMD Dual Core 2.8 Ghz 8 Gb DDR3 / 250 Gb HDD / DVDRW Windows 7 Home Premium - Fully Licensed 90 day limited warranty, 30 day return Power cord included