Lenovo M83 10AM0009US 14-Inch Desktop (Discontinued by Manufacturer) 3.4 GHz Intel Core i3-4130 Processor (2 cores / 4 threads, 3 MB Cache); Intel HD Graphics 4400 4 GB (32GB Max) DDR3-1600 SDRAM, 500 GB 7200 rpm SATA 6.0Gb/s Hard Drive, DVD-Writer 4 x USB 3.0, 4 x USB 2.0, VGA, 2 x DisplayPort, supports 3 independent displays Gigabit Ethernet, High Definition (HD) Audio, Internal Speaker (1 Watt), USB Keyboard and USB Optical Mouse Windows 7 Professional 64 preinstalled through downgrade rights in Windows 8 Pro 64-bit; 3 Years Limited Warranty