HP 4000 Pro Small Form Factor Desktop, Intel Core 2 Duo E7500 2.93GHz Processor, 160GB HDD, 4GB DDR3 RAM, DVD-ROM, Gigabit Ethernet, Windows 7 Professional (Certified Refurbished) This Certified Refurbished 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, a minimum 90-day waranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com Intel Core 2 Duo E7500 2.93GHz, 4GB DDR3 RAM, DVD-ROM 160GB SATA 7200RPM Hard Drive, Integrated Intel Graphics 10/100/1000 Gigabit Ethernet, 4 USB 2.0, Gigabit Ethernet, Standard USB Keyboard and Mouse Genuine Windows 7 Professional 64-bit