Dell OptiPlex/Core 2 Duo E6550 @ 2.33 GHz/NEW 3GB Memory/160GB HDD/DVD-RW/WINDOWS 7-(Certified Reconditioned) Core 2 Duo E6550 @ 2.33 GHz/NEW 3GB Memory/160GB HDD WINDOWS 7 PROFESSIONAL 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.