Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q67 Processors : Intel Core i3,i5,i7, Intel Pentium Memory Support : Four (4) DIMM slots , Up to 32 GB DDR3 1333 MHz SDRAM  Hard Drive : Up to 1 TB 7200 rpm Removable Media : DVD-ROM/ DVD-ReWritable Expansion Bays : External: One (1) 5.25-inch, One (1) 3.5-inch Internal: One (1) 3.5-inch Expansion Slots : One (1) LP PCI, Two (2) LP PCI-E x16 (1 wired x4), One (1) LP PCI-E x1 Graphics : Intel HD Graphics 2000/3000 (integrated) Audio : Realtek ALC261 codec Communications : Intel 82579LM integrated GbE Network Connection I/O Ports : Front: Four (4) USB 2.0, Audio I/O, Rear: Six (6) USB 2.0, Serial, VGA, DP,RJ-45, Two (2) PS/2, Audio I/O Input Devices : Standard Keyboard (PS/2 or USB) Power : 240 W Dimensions : 37.9 cm 33.8 cm x 10.0 cm Weight : 7.6 kg