Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q87 Processors : Intel Core i5,i7 4th Gen, Intel Dual Core i3, Intel Pentium Memory Support : Four (4) DIMM slots , Up to 32 GB DDR3 1600 Mhz Hard Drive : SATA3 7200 rpm Removable Media : DVD-ROM/ DVD-ReWritable Expansion Bays : External:One (1) 2.5-inch, Internal: One (1) 3.5-inch Expansion Slots : One (1) miniPCIe Graphics : Integrated Intel HD Graphics 4600 Audio : Dell Business audio speaker Communications : Gigabit Ethernet I/O Ports : Front: Two (2) USB 3.0, Audio I/O Rear: Two (2) USB 3.0, Two(2) USB 2.0, Two (2) DP, VGA, RJ-45, Serial, Αudio Ι/Ο Power : 200W Dimensions : 24 x 23.7 x 6.5 cm Weight : 3.3kg