Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel B85 Express Processors : Intel Core i3, i5 4th Gen Memory Support : Four (4) DIMM slots , Up to 32 GB DDR3 1600 MHz Hard Drive : SATA HDD or SSD Removable Media : DVD-ROM/DVD-RW Expansion Bays : N/A Expansion Slots : One (1) PCIe x 16, One (1) PCIe x 16 (x4 mode), One (1) PCIe x 1, One (1) PCI Graphics : Intel HD Graphics Audio : Integrated Communications : Gigabit Ethernet Port I/O Ports : Six (6) USB 2.0, Four (4) USB 3.0, VGA, DVI, Ethernet Input Devices : Standard Keyboard, Mouse Power : 300W Dimensions : 18.03 x 45.21 x 37.59 cm Weight : 11.79 Kg