Lenovo ThinkPad Edge E531 68855TU 15.6 LED Notebook Intel Core i3-3120M 2.5 GHz 4GB DDR3 320GB HDD DVD-Writer Intel HD Graphics 4000 Windows 7 Professional 64-bit Midnight Black New - Retail 1-Year Limited Warranty Lenovo 68855TU Lenovo ThinkPad Edge E531 68855TU 15.6 LED Notebook Intel Core i3-3120M 2.5 GHz 4GB DDR3 320GB HDD DVD-Writer Intel HD Graphics 4000 Windows 7 Professional 64-bit Midnight Black