ThinkPad Laptop T Series Intel Core i5 2nd Gen 2520M (2.50GHz) 4GB Memory 320GB HDD Intel HD Graphics 3000 15.6" Windows 7 Professional 64-bit T520 (423946U) - Newegg.com
Amazon.com: Lenovo ThinkPad T520 Laptop Notebook - Intel Core i5 2.5GHz - 8GB DDR3 - 128GB SSD - 15.6in Display- DVD - Windows 10 Pro (Renewed) : Electronics