Lenovo B Grade Laptop X201 Intel Core i5 1st Gen 520M (2.40 GHz) 4 GB Memory 320 GB HDD 12.1 Windows 10 Home 64-Bit Part Number: NE5-30105 Operating System: Windows 10 Home 64-Bit CPU: Intel Core i5-520M 2.4 GHz Screen: 12.1 Memory: 4 GB Storage: 320 GB Other Features: B grade refers to units that may have dents, chips or scuffs on the body, keyboard may be shiny or worn down and hair line scratches or scuffs on the screen.