HP DC7800 Desktop - Core 2 Duo 3.0GHz - *NEW* 1TB 7200RPM HDD - 4GB RAM - WIFI - Featuring Dual Video Output - DVD/CD-RW - Windows 7 Pro 64-Bit Operating System 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 Intel Core 2 Duo E7500 Dual-Core, 2.93GHz, 3MB Cache, 4GB DDR3 supports up to 8GB, 160GB SATA 7200RPM, Integrated Intel Graphics 6 x USB 2.0, 1 x Headphone output/Microphone input combo, DVI-D, VGA, RJ-45 LAN, 10/100/1000 Gigabit Ethernet Audio: Line-in/Microphone, Audio: Line-out, Serial Port, DVD-ROM, 2 x PCI Slot, PCI, Express x16 Slot, PCI Express x1 Slots, External 5.25" Drive Bay, Internal 3.5" Drive Bay, External 3.5" Drive Bay Genuine Windows 7 Professional 64-bit, Standard USB Keyboard and Mouse