Lenovo ThinkPad T530 23594LU 15.6' LED Notebook - Intel - Core i5 i5-3230M 2.6GHz - Black Processor: Intel CoreTM i5-3230M Dual Core Processor (3M Cache, 2.60GHz - 3.20 GHz) 35W RAM: 4GB (1 x 4GB) DDR3 1600MHz / Hard Drive: 500GB 7200rpm HDD Optical Drive: SuperMulti 8X DVD+/-R/RW Dual Layer / Pre-installed Operating System: Windows 7 Professional x64 Upgradeable to Genuine Windows 8 Pro at anytime Manufacturer Warranty: 1 year Warranty