Amazon.com: Emtec X250 Power Plus M.2 SATA SSD (256GB) : Electronics
ThinkPad X Series X250 (20CM002XUS) Ultrabook Intel Core i5 5200U (2.20 GHz) 8 GB Memory 500 GB HDD 16 GB SSD Intel HD Graphics 5500 12.5" Windows 7 Pro 64-Bit downgrade rights in Windows 8.1 Pro 64 - Newegg.com