Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel H61 Processors : Intel Pentium G630T/G620T/G530T, Intel Celeron G460/G440, Intel Core i3 2nd Gen, Core i5 3rd Gen Memory Support : Two (2) SODIMM slots , Up to 16 GB DDR3  Hard Drive : SATA 320/500/750 GB 5.400/7.200 rpm or 128 GB SSD Removable Media : N/A Expansion Bays : One (1) 12.7mm high tray-in, One (1) 2.5 inch bay Expansion Slots : One (1) PCI Express Mini Card slot Graphics : Intel HD Graphics Audio : ALC662 chipset Communications : Gigabit ethernet port I/O Ports : Front: Two (2) USB 2.0, Audio I/O, Rear: Three (3) USB 2.0, Audio I/O, VGA, DP, RJ-45 Input Devices : Standard Keyboard, Mouse (USB) Power : 65W Dimensions : 18.2 x 17.9 x 3.45 cm Weight : 2.1 kg