Lenovo Thinkpad T420 - i5 2.5GHz, 4GB DDR3, 320GB HDD, Windows 7 Pro, WiFi + Docking Station! (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. 320GB Hard Disc Drive Drive - Intel i5 2520m 2.5GHz CPU Ports: (3) USB 2.0, (1) eSATA/USB 2.0 Combo Port, (1) Gigabit Ethernet (RJ-45), (1) Display Port, (1) VGA DB-15 Out, (1) Modem (1) Headphone Out + Lenovo 4337 Docking Station with Ports: (1) Display Port, (1) DVI, (1) VGA, (6) USB 2.0, (1) Ethernet, (1) Microphone In, (1) Headphone Out. Software: Comes Pre-Installed with *NEW* Windows 7 Professional 64-Bit Operating System What's in the box?: Refurbished Lenovo Thinkpad T420, Lenovo 4337 Docking Station, Charger Cable and Battery!