Lenovo Thinkpad T420 14-Inch Laptop (Intel Core i5 2.5ghz,4GB,250GB DVDRW Win 7 Professional) Core i5-620M (4M Cache, 2.66ghz) 4GB Fast DDR3 1333mhz Memory Massive 250GB SATA Hard Drive Internal roll cage protects components from accidental damage Certified Pre-Owned PC from a Microsoft Authorized Refurbisher. 1 Year Warranty