Dell OptiPlex, Intel Core i3-2120 3.3GHz, New 4GB Memory, 250GB HD, DVD, Windows 7 Professional 64-bit (Certified Refurbished) Intel i3 CPU, 4GB RAM 250GB HDD DVD-ROM Microsoft has discontinued mainstream support of Windows 7. This product may arrive upgraded to Windows 10. This CertifiedRefurbish 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,and may arrive in a generic white or brown box.Only select sellers who maintain a high performance bar may offer CertifiedRefurbish products on Amazon