Operating System: Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset: Intel B75 Processors: Intel 3rd generation Core i5 QC, Intel 3rd generation i3 DC, Intel Pentium, Intel Celeron Memory Support: Two (2)SODIMM slots , Up to 16 GB DDR3 1600MHz Speaker: 2 x internal stereo speakers Display: 20 WLED ( 1600x900), HD+ resolution with anti-glare coating; optional projected capacitive Touchscreen with glossy coating Hard Drive: Up to 1TB SATA Hard Drive or SSD (optional) Removable Media: DVD-ROM/ DVD-ReWritable Slim Graphics: Integrated Intel HD Graphics 2500 Audio: HD Audio Communications: Integrated Realtek RTL8151GD GbE Network Connection I/O Ports: Side: Two (2) USB 3.0, Audio I/O, Rear: Four (4) USB 2.0, RJ-45, Serial, Audio I/O Power: 180W Dimensions: 20 x 12.7 x 2.6 cm Weight: 8 kg