Operating System : Windows 10 Home & Pro, Ubuntu Linux, Free DOS Display Size : 15.6'' Display Max Resolution : 1366 x 768 or 1920 x 1080 Chipset : Mobile Intel HM87 or QM87 Processors : 4th generation Intel Core i3,i5,i7 Processors Ram Memory : Two (2) SODIMM slots,up to 16 GB, DDR3L Hard Disk Drive : Up to 2 TB or 7200 rpm or SSD (Optional) Graphics : Intel HD 4400 Network Adapter : Intel Clarkville (I217-V) GbE Connection WiFi : Yes Web Camera : Optional Optical Disc Drive : DVD ROM / DVD ReWritable USB : Five (5) x USB 3.0 Ports : VGA, Display Port, Media Card Reader -( supports SD Card, SDHC Card, SDXC Card), RJ-45 Power Supply Adapter : 65 W Dimensions : 37.8 x 25.7 x 2.53 cm  Weight : 2.32kg