Dell OptiPlex /Core 2 Duo E8400 3.00 GHz/New 4GB RAM/ 500GB HDD/DVD-RW/WINDOWS 7 PRO 64 BIT - (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 and repackaging! Windows 7 Professional 64bit! New Power Cord.New 4GB RAM! PACKAGE DOES NOT include monitor or keyboard/mouse!