Operating System : Windows 10 Home & Pro MAR Chipset : Intel Q67 Processors : Intel Core i3,i5,i7 2nd and 3rd Gen, Intel Pentium Memory Support : Two (2) DIMM slots , Up to 8 GB DDR3 1600 MHz SDRAM  Hard Drive : Up to 1TB 7200 rpm or Solid State Drive (optional) Removable Media : DVD-ROM/ DVD-ReWritable Expansion Bays : External: One (1) 5.25-inch, Internal: One (1) 3.5-inch Expansion Slots : One (1) LP PCIe x16, Three (3) LP PCIe x1 Graphics : Integrated Intel HD Graphics 2500/4000 (3rd G), 2000/3000 (2nd G) Audio : Conexant CX20641 High Definition Audio Codec Communications : Integrated Realtek LOM I/O Ports : Front: Two (2) USB, Audio I/O, Rear: Six (6) USB 2.0, RJ-45, VGA, HDMI Audio I/O, PS/2 Input Devices : Standard Keyboard, Mouse (USB or PS/2) Power : 250 W Dimensions : 41 cm x 36 cm x 10.2 cm Weight : 7.56 kg