Dell Optiplex 990 Tower Computer | Intel Core i7 3.4GHz up to 3.8GHz CPU | 2TB Hard Drive | 16GB DDR3 Memory | Windows 7 Pro | FREE 160GB EXTERNAL HARD DRIVE (Certified Refurbished) This Certified Refurbished product is tested and certified by the manufacturer or by a third-party refurbisher to look and work like new,with limited to no signs of wear.The refurbishing process includes functionality testing,inspection,reconditioning and repackaging.The product ships with all relevant accessories,a minimum 90-day warranty,and may arrive in a generic white or brown box.Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon. New 2TB with 2 Year Warranty From Manufacturer What's in The Box? Refurbished Dell OptiPlex 990 Tower with Power Cable, New USB Keyboard & Mouse. Software Installed? New Installation of Windows 7 Pro 64-bit.