Lenovo ThinkPad X1 Carbon 20BS0031US 14-Inch Laptop (Black) Intel i7-5600U (2C, 2.6 / 3.2GHz, 4MB, 1600MHz) 14-inch FHD (1920x1080), Intel HD Graphics 5500 256 GB Solid-State Drive Opal2; 8 GB DDR3L SDRAM Intel 7265 ac + BT4.0, Fingerprint Reader Windows 8.1 Down Gradeable to Windows 7 Pro 64, Maximum Memory Capacity: 8 GB