Lenovo ThinkPad X1 Carbon 3444B7U 14" Ultrabook - Core i7 i7-3667U 256GB SSD 4GB DDR3 Windows 7 Professional
Lenovo ThinkPad X1 Carbon 3444-B7U Ultrabook - 3rd generation Intel Core i7-3667U 2.0GHz, 4GB DDR3, 256GB SSD, 14" Display, Windows 7 Professional 64-bit / Windows 8 Professional 64-bit