Dell Optiplex, Windows 10 Home x64, Intel Core 2 Duo 2.93 Ghz, New 16GB Memory, 250GB HDD (Certified Refurbishd) 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 Certified Refurbishd products on Amazon.com. Intel Core2 Duo 2.93GHz, New 16GB Memory, 250GB HDD, DVD ROM - Operating System: Windows 10 Home x64. New WIFI USB ADAPTER.