Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q150 Processors : Intel 6th Gen Core i3,i5,i7, Intel Pentium, Intel Celeron Memory Support : Four (4)DIMM slots , Up to 64 GB DDR4 Hard Drive : SATA, 7200 rpm Removable Media : Optional Expansion Bays : External: One (1) 9.5 mm, Internal: Οne (1) 2.5-inch, Οne (1) 3.5-inch Expansion Slots : One (1) LP PCIe 3.0 x 16, One (1) LP PCIe 3.0, One (1)LP PCI x 16 Graphics : Intel HD Graphics Audio : High Definition (HD) Audio, Realtek ALC662 Communications : Intel I219-LM GbE Network Connection I/O Ports : Front: Two (2) USB 3.0, Audio I/O, Rear: Four (4) USB 3.0, Two (2) USB 2.0, Two (2) DP, VGA, Serial, RJ-45, Audio I/O Power : 210 W Dimensions : 35.7 x 33.8 x 8.8 cm Weight : 5.6 kg