HP Elite 8100 Business Desktop (Intel Dual Core i5 3.2GHz Processor), 4GB DDR3 RAM, 160GB HDD, DVD, Windows 10 Professional (CertifiedRefurbished) This CertifiedRefurbished 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 relevant accessories, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer CertifiedRefurbished products on Amazon.com Operating System: Windows 10 Professional Intel Core i5 3.2GHz Processor, 4GB DDR3 RAM, DVD-ROM 160GB SATA Hard Drive, Intel HD Graphics(no screen) 10/100/1000Mbps Ethernet, 10 USB Port, USB keyboard and mouse included