Intel&reg; Core&trade; i7-4510U Processor Windows 8.1 L55-B5237 15.6" Includes Windows 8.1 operating system Powered up by a 3.10GHz Intel Core i7-45 10U processor with 4M cache 8GB DDR3L 1600MHz memory stores all your important files, music, movies and photos (not user upgradable) USB 3.0 with Sleep and Charge, USB 3.0 and USB 2.0 for connecting to a wide range of peripherals 15.6" (measured diagonally) LED backlit widescreen with TruBrite TFT display at 1366 x 768 native resolution and 16:9 aspect ratio give you stunning, crystal-clear display