Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q67 Processors : Intel Core i7 Memory Support : Four (4) DIMM slots , Up to 32 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: One (1) 5.25-inch, One (1) 3.5-inch Internal: One (1) 3.5-inch Expansion Slots : One (1) low profile PCI, Two (2) low profile PCI Express x16 (1 wired x4), One (1) low profile PCI Express x1 Graphics : Intel HD Graphics 2000/3000 (integrated) Audio : Realtek ALC261 codec Communications : Intel 82579LM integrated GbE Network Connection I/O Ports : Rear: Six (6) USB, Serial, Two (2) PS/2, audio I/O, Front: Four (4) x USB, audio I/O Input Devices : Standard Keyboard (PS/2 or USB) Power : 240W Dimensions : 37.9 x 33.8 x 10 cm Weight : 7.6 kg