Operating System : Windows 10 Home & Pro MAR Chipset : Intel Q67 Express Chipset Processors : Intel 3rd Generation Core i5 Memory Support : Two (2) DIMM slots , Up to 8 GB DDR3 1600 MHz SDRAM  Hard Drive : Up to 1TB 7200rpm 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 Audio : Conexant CX20641 High Definition Audio Codec Communications : Integrated Realtek LOM I/O Ports : Front: Two (2) USB 2.0, Audio I/O, Rear: Six (6) USB 2.0, VGA, HDMI, RJ-45, Audio I/O Input Devices : Standard Keyboard ( USB) Power : 250 W Dimensions : 41 cm x 36 cm x 10.2 cm Weight : 7.56 kg,