Lenovo ThinkCentre M58p Desktop - Intel Core 2 Duo E8400 3GHz - 2 GB DDR3 SDRAM - 250 GB - DVD-Writer (DVD-RAM/&plusmn;R/&plusmn;RW) - Gigabit Ethernet - Windows 7 Professional - Small Form Factor (Discontinued by Manufacturer) Lenovo ThinkCentre M58p SFF Desktop Intel Core 2 Duo 2.93GHz 4GB RAM, 250GB Hard Disk DVDRW Drive, Multi USB Ports, Keyboard and Mouse Included Windows 7 Pro (64bit)