Lenovo ThinkPad T450s Laptop Computer 20BX001LUS 14 inch FHD IPS Screen, Intel Dual Core i7-5600U, 12GB RAM, 256GB SSD, Window 7 Pro, 3 Year Warranty Processor - Intel Core i7-5600U ( 2.60GHz 1600MHz 4MB) Operating System - Windows 7 Professional 64 preinstalled through downgrade rights in Windows 8.1 Pro 64 Display - 14.0" Full HD IPS (1920x1080); Graphics Card - Intel HD Graphics 5500 Features: Backlit Keyboard, Fingerprint Reader, 2 x 3-Cell Lithium-Ion Batteries Memory Upgrade* | View Product Description for more details