Operating System : Windows 10 Home & Pro MAR Chipset : Intel H61 Express Chipset Processors : Intel Core i3,i5 2nd Gen Memory Support : Two (2) DIMM slots , Up to 8 GB DDR3 1333 MHz SDRAM  Hard Drive : Sata 7.200 rpm up to 1TB Removable Media : DVD-ROM/ DVD-ReWritable Expansion Bays : External: One (1) 5.25-inch (slim-line), Internal: One (1) 3.5-inch Expansion Slots : One (1) PCIe x1, One (1) PCIe x16 Graphics : Intel HD Graphics Audio : Conexant CX20641 High Definition Audio Codec Communications : Integrated Realtek LOM I/O Ports : Front: Two (2) USB 2.0, Audio I/O, Rear: Six (6) USB 2.0, RJ-45, VGA, HDMI, Audio I/O Power : 240 W Dimensions : 31.2 cm x 29 cm x 9.26 cm Weight : 5.70 kg

Operating System : Windows 10 Home & Pro MAR Chipset : Intel H61 Express Chipset Processors : Intel Core i3,i5 2nd Gen Memory Support : Two (2) DIMM slots , Up to 8 GB DDR3 1333 MHz SDRAM  Hard Drive : Sata 7.200 rpm up to 1TB Removable Media : DVD-ROM/ DVD-ReWritable Expansion Bays : External: One (1) 5.25-inch (slim-line), Internal: One (1) 3.5-inch Expansion Slots : One (1) PCIe x1, One (1) PCIe x16 Graphics : Intel HD Graphics Audio : Conexant CX20641 High Definition Audio Codec Communications : Integrated Realtek LOM I/O Ports : Front: Two (2) USB 2.0, Audio I/O, Rear: Six (6) USB 2.0, RJ-45, VGA, HDMI, Audio I/O Power : 240 W Dimensions : 31.2 cm x 29 cm x 9.26 cm Weight : 5.70 kg

Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q65 Express Processors : Intel Core i3,i5,i7 2nd Gen Memory Support : Four (4) DIMM slots , Up to 16 GB DDR3 1333 MHz SDRAM  Hard Drive : Up to 3TB 7200 rpm or Solid State Drive (optional) Removable Media : SATA DVD-ROM drive, SATA DVD Writer Drive, SATA Combo Drive CD-RW (Slim-Line) Expansion Bays : External: One (1) 5.25-inch (Slim-Line), Internal: One (1) 3.5-inch Expansion Slots : One (1) PCIe x16, One (1) PCIe x16 (wired x4) (LP) Graphics : Intel HD Graphics 2000 Audio : Realtek ALC269Q High Definition Audio Codec Communications : Intel 82579LM Gigabit Ethernet I/O Ports : Front: Four (4) USB, microphone, headphone, Rear: Six (6) USB, Serial, VGA, DP, Stereo line in, Speakers line out, PS/2 Power : 240W Dimensions : 31.2 x 29.0 x 9.26 cm Weight : 5.70 kg