Lenovo ThinkPad X250 20CM 12.5" Ultrabook, 8 GB RAM, 256 GB SSD, Intel HD Graphics 5500, Black (20CM0048US) Lightweight and portable, measuring 20mm thin and weighing less than 3 pounds Increased performance Enhanced user experience Enhanced backlit keyboard With power Bridge functionality, users can swap out the removable battery for the 6-cell travel battery without powering down the system