Operating System : Windows 10 Home & Pro, Ubuntu Linux, Free DOS Display Size : 15.6" Display Max Resolution : 1366 x 768 Chipset : QM67 Express Processors : Intel Core i3, Intel Core i5,Intel Core i7 2nd Gen Ram Memory : (2) two Slots SODIMM, DDR3, Up to 8GB Hard Disk Drive : SATA, 7.200rpm Graphics : Intel HD Graphics 3000 Network Adapter : 1 Gigabit Ethernet WiFi : Yes Web Camera : Optional Optical Disc Drive : DVD-ROM / DVD ReWritable USB : Four (4) x USB 2.0 Ports : VGA, HDMI, RJ-45, USB 2.0/e-SATA, IEEE1394, ExpressCard/54, Memory Card Reader, Docking Power Supply Adapter : 90W Dimensions : 38.4 x 25.8 x 3.4 cm Weight : 2.5 kg