Intel Core i7-6700 3.4G 4C, 8GB PC4-17064 DDR4/2133MHZ UDIMM, 500GB/7200RPM HD 3.5\” SATA3, DVD Recordable Rambo SATA, USB optical mouse included, Windows 7 Professional 64-Bit Pre-installed through downgrade rights in Windows 10 Pro English, USB preferred pro Full Size Keyboard Black Euro English 103p Euro English. Lenovo 21.5″ Monitor Optional