Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q87 Express Chipset Processors : Intel Core i3 Dual Core and Pentium Dual Core Memory Support : Four (4)DIMM slots , Up to 32 GB DDR3, 1600MHz Hard Drive : Supports Hybrid, Opal SED FIPS, and Solid State Drive Removable Media : DVD-ROM/ DVD-ReWritable Expansion Bays : External: Two (2) 5.25-inch, Internal: Two (2) 3.5-inch Expansion Slots : One (1) PCIe x 16 PCIe x 16 - full-height, One (1) PCIe x 16 - full - height (x4 mode), One (1) PCIe-full-height, One (1) PCI - full-height Graphics : Integrated Intel HD Graphics 4600 Audio : High Definition Audio Communications : Gigabit Ethernet I/O Ports : Front: Two (2) USB 3.0,Two (2) USB 2.0, Audio I/O, Rear: Four (4) USB 2.0, Two (2) USB 2.0, Two (2) DP, VGA, Serial, RJ-45, Audio I/O, Two (2) PS/2 Input Devices : Standard Keyboard, Mouse (USB or PS/2) Power : 290W Dimensions : 41.7 x 36 x 17.5 cm Weight : 9.4 kg