Wireless Keyboard/Mouse Box Contents - Lenovo ThinkPad T420 4177-Q5U, 6-cell Li-on Battery Pack (up to 9 hours), AC Adapter; Software Bundle - Windows 7 Professional 64, Microsoft Office 2010 preloaded (purchase product key to activate), Norton Internet Security 2011 30-days Subscription, 1-Year Limited Warranty Intel Core i5-2520M 2.50GHz Processor with Turbo Boost Technology up to 3.20GHz 3MB L3 Cache 4GB PC3-10600 1333MHz DDR3 RAM (8GB max) 320GB (7200RPM) Hard Drive