HP Pavilion 500 Premium Flagship Desktop Computer, AMD A8-6410 Quad-Core 2.0GHz (up to 2.4GHz), 8GB RAM, 1TB HDD, 802.11n Wifi, Windows 8.1 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 warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com AMD Quad-Core A8-6410 2.0GHz (Turbo up to 2.4GHz, 2MB Cache), 8GB DDR3 RAM (2 slots, expandable to 16GB), 1TB SATA Hard Drive (7200rpm), AMD Radeon R5 series Graphics Integrated Realtek ALC662, 10/100/1000 Gigabit Ethernet, 802.11b/g/n wireless, SuperMulti DVDRW Front Panel: 7-in-1 Card Reader, (2) USB 2.0, (1) Headphone, (1) Microphone; Rear Panel: (1) DVI-D, (1) VGA, (2) USB 3.0, (2) USB 2.0, (1) RJ-45 LAN, (1) Audio: Line-in, (1) Audio: Line-out, (1) Microphone Windows 8.1 Professional operating system, upgradable to the new Windows 10; Power supply: External 65W Max; Expansion Slots & Bays: (1) Half-Length Minicard (occupied), (1) 5.25 inch Drive Bay (occupied), (1) 3.5 inch Drive Bay (occupied)