Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q43 Processors : Intel Core 2 Duo, Dual Core, Core 2 Quad, Pentium & Celeron Memory Support : Four (4) DIMM slots , Up to 16 GB DDR2 SDRAM  Hard Drive : SATA, SSD SATA Removable Media : N/A 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-e 2.0 x16, One (1) LP PCI-e 2.0 x4, Two (2) LP PCI Graphics : Intel GMA 4500 Audio : Realtek ALC663 Communications : Gigabit Ethernet I/O Ports : Front: Two (2) USB, microphone, headphone  Rear: Six (6) USB, Stereo Line In/Out, VGA Power : 270W active PSU Dimensions : 38 x 34 x 10 cm Weight : 10 kg