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