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
Lenovo Thinkpad X250 Ultrabook 20CM002XUS (12.5" HD Display, i5-5200U 2.2GHz, 8GB RAM, 500GB 5400rpm, SSD 16GB, Backlit Keyboard, Bluetooth 4.0, Fingerprint Reader, 720p Camera, Windows 7 Pro 64)