Operating System : Windows 10 Home & Pro, Ubuntu Linux, Free DOS Display Size : 15.6'' Display Max Resolution : 1366 x 768 Chipset : Mobile Intel QM77 Express Processors : Intel Core i3, i5, i7 3rd Gen Ram Memory : Two (2) SODIMM slots, Up to 16 GB DDR3 1600MHz Hard Disk Drive : Up to 1TB SATA 7200 rpm or SSD (Optional) Graphics : Intel HD Graphics Network Adapter : Gigabit Ethernet WiFi : Yes Web Camera : Optional Optical Disc Drive : DVD±RW (±R DL) / DVD-RAM fixed USB : 1 x USB 3.0, 2 x USB 2.0, 1 x USB 2.0/eSATA Ports : VGA, Mini DisplayPort, RJ-45, Serial, Memory Card Reader Power Supply Adapter : 75 Watt, 15 V, 5 A Dimensions : 374 x 250.5 x 33.4 mm Weight : 2.40 kg