Operating System : Windows 10 Home & Pro MAR, Linux, Dos Chipset : Intel Q67 Processors : Intel 2nd & 3rd Generation Core i7, i5, i3, Pentium, Celeron Processors Memory Support : Two (2) DIMM slots , Up to 8 GB DDR3 1333 MHz SDRAM  Hard Drive : 160MB to 1 TB , 64GB to 1TB Solid State Drive (optional) Removable Media : SATA DVD-ROM drive, SATA DVD Writer Drive, SATA Blu-ray Writer Drive Expansion Bays : External: Two (2) 5.25-inch, Internal: Two (2) 3.5-inch Expansion Slots : One (1) PCIe x16, Three (3) PCIe x1 Graphics : Integrated Intel HD Graphics 2500/4000 (3rd G), 2000/3000 (2nd G) Audio : Conexant CX20641 High Definition Communications : Integrated Realtek LOM I/O Ports : Front: Two (2) USB, microphone, headphone, Rear: Six (6) USB, VGA, HDMI, RJ45, Stereo L/I, Speakers L/O Input Devices : Standard Keyboard, Mouse (USB) Power : 265W Dimensions : 41.7 x 36 x 17.5 cm Weight : 8.87 kg