Operating System: Windows 10 Home & Pro, Ubuntu Linux, Free DOS Display Size: 15.6" Display Max Resolution: 1366 x 768 Chipset: Mobile Intel QM77 Processors: Intel Core i3, i5, i7 3rd Gen Ram Memory: (2) Two Slots DDR3L Up to 16GB Hard Disk Drive: SATA, 7.200rpm up to 750 GB or 5400rpm up to 320 GB or 500 GB SSD Graphics: Intel HD Graphics 4000 Network Adapter: 1 Gigabit Ethernet WiFi: Yes Web Camera: Optional Optical Disc Drive: DVD ROM / DVD ReWriteable USB: 2 x USB 3.0, 2 x USB 2.0 Ports: VGA , HDMI, RJ-45, Audio I/O, eSATA/USB combo, Docking, ExpressCard/54, Memory Card Reader Power Supply Adapter: 65W Dimensions: 38.4 x 25.8 x 3.4 cm Weight: 2.44 kg