Operating System : Windows 10 Home & Pro MAR Chipset : Intel Q57 Processors : Intel Core i3, i5, i7 4th Gen Memory Support : Four (4) DIMM slots , Up to 32 GB DDR3 PC3-12800 1600 MHz Hard Drive : SATA3 Hard Drive 7200 rpm or SSD Removable Media : Optional Slim Line Expansion Bays : External: One (1) 3.5-inch (for Media Card Reader), One (1) Slim Optical Drive Bay Internal: One (1) 2.5-inch, One (1) 3.5-inch (available without Media Card Reader) Expansion Slots : One (1) PCIe 3.0 x16 - low-profile, Two (2) PCIe 2.0 x1 - low-profile, One(1) PCIe 2.0 x16 - low-profile Graphics : Intel HD Graphics Audio : HD Audio (integrated) Communications : Gigabit Ethernet I/O Ports : Front: Two (2) USB 2.0, Two (2) USB 3.0 Rear: Four (4) USB 2.0, Two (2) USB 3.0, VGA, DisplayPort, RJ-45, Serial, PS/2 Keyboard/Mouse, Audio I/O Input Devices : Standard Keyboard, Mouse (USB ) Power : 240W active PFC Dimensions : 338 x 100 x 379 mm Weight : 7.6 kg