Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q35 Express Chipset (ICH9DO) Processors : Intel Core 2 Duo, Core 2 Quad, Dual Core & Celeron Memory Support : Four (4) DIMM slots , Up to 8 GB DDR2 800 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: One (1) 3.5-inch, Two (2) 5.25-inch, Internal: Two (2) 3.5-inch Expansion Slots : One (1) PCIe x16, One (1) PCIe x1, Two (2) PCI Graphics : Integrated Intel® Graphics Media Accelerator 3100 Audio : ADI 1984 High Definition Audio Communications : Intel 82566DM Gigabit LAN 10/100/1000 I/O Ports : Front: Two (2) USB, microphone, headphone, Rear: Six (6) USB, VGA, Parallel, Serial, Stereo line in, Speakers line out Input Devices : Standard Keyboard (USB) Power : 305W Dimensions : 41.4 x 43.9 x 18.5 cm Weight : 11.70 kg,