Dell OptiPlex Core 2 Duo E8400 3.0GHz- New 4GB - 160GB - DVD&plusmn;RW-(Certified Reconditioned) This certified reconditioned product is tested and certified by the manufacturer or by a third-party seller to look and work like new, with some signs of wear. The reconditioning process includes functionality testing, inspection & repackaging! Windows 7 Professional 64 bit. New WIFI, USB Keyboard and Mouse.