Operating System : Windows 7 Home & Pro. MAR, Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q85 Processors : Intel Core i3, i5, i7 4th Gen, Intel Pentium G3240T Memory Support : Two (2) SO-DIMM slots , Up to 16 GB DDR3 Hard Drive : Sata 6Gb/S , 7.200rpm or SSD Removable Media : N/A Expansion Bays : Internal: One (1) 2.5-inch Expansion Slots : N/A Graphics : Intel HD 4600 Audio : HD Audio, Realtek ALC283 codec Communications : Gigabit Ethernet I/O Ports : Front: Two (2) USB 3.0( One AlwaysOn), Audio I/O  Rear: Two (2) USB 3.0, One (1) USB 2.0, VGA, DP, RJ-45 Input Devices : Standard Keyboard, Mouse (USB) Power : 65W Dimensions : 18.2 x 17.9 x 3.45 cm Weight : 1.3 kg