Lenovo ThinkPad P50s 20FL000MUS 15.6" Mobile Workstation - Intel i7-6500U Processor, 16GB RAM, 512GB SSD, NVIDIA Quadro M500M, Windows 7 Professional Intel Core i7-6500U Dual-Core 2.50 GHz Processor 16GB DDR3L SDRAM, 512GB SSD NVIDIA Quadro M500M 2GB 15.6" FHD (1920x1080) IPS, Backlit Keyboard, Fingerprint Reader Windows 7 Pro 64 from downgrade rights from Windows 10 Pro