Operating System : Windows 10 Home & Pro. MAR, Windows 10 Home & Pro MAR Chipset : Intel Q87 Processors : Intel 4th generation Core i7/i5 Quad Core, Core i3 Dual Core and Pentium Dual Core Memory Support : Up to 2 SODIMM slots. Non-ECC dual-channel 1600MHz DDR3 SDRAM, up to 16GB. Hard Drive : Up to 1TB 2.5", Optional Solid State Hybrid Removable Media : Optional external DVD-ROM drive Expansion Bays : 1 internal 2.5" Expansion Slots : 1 M.2 (22x30mm), 1 M.2 (22x80mm) Graphics : Integrated Intel HD Graphics 4600 (with select CPUs) Audio : N/A Communications : Optional wireless M.2 802.11ac card I/O Ports : 6 USB3.0 (2 front and 4 rear); 1 RJ-45; 1 VGA; 1 DisplayPort; 1 GHS (front); 1 Mic-in (front) Input Devices : Standard Keyboard, Mouse (USB) Power : 65W Dimensions : 18.2 x 17.6 x 3.6 cm Weight : 1.28 kg