Windows 7: HP Compaq 8100 - i5 3.1GHz, 8GB DDR3, New 120GB SSD, Windows 7 Pro, WiFi (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. Storage: NEW 120GB Solid State Drive with 2 Year Manufacturer Warranty! Model: HP Elite 8100 SFF - Intel Core i5 3.1GHz - 8GB DDR3 - Ports: (10) USB 2.0 (4 front, 6 rear), (1) Display Port, (1) VGA, (1) Stereo line-in , (1) Stereo line-out , (1) Microphone, (1) Headphone , (1) Serial port, (2) PS/2 (Keyboard, Mouse), (1)RJ-45 (Ethernet). Software: Comes Pre-Installed with *NEW* Windows 7 Pro 64-Bit Operating System What's in The Box? Refurbished HP Elite 8100 Small Form Factor Desktop with Power Cable, New ReCircuit USB Keyboard, Mouse & Mousepad!