Dell OptiPlex PC - Intel Core 2 Duo E6550 2.3GHz 4GB 500GB DVD Windows 7 (Certified Refurbished) This Certified Refurbishd product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer CertifiedRefurbishd products on Amazon.com Intel Core 2 Duo E6550 2.3GHz Processor 4GB DDR3 - 500GB SATA HDD DVD Microsoft Windows 7.