Operating System: Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel H110 Processors : Intel 6th generation Dual Core i7, i5, i3, Intel Pentium, Intel Celeron Memory Support : 2 UDIMM slots; Non-ECC 1600MHz DDR3L, up to 16GB Hard Drive : HDD Removable Media : N/A Expansion Bays : Two (2) 2.5-inch drive, One (1) 3.5-inch drive, One (1) 5.25 inch optical-drive bays Expansion Slots : One (1) PCIe x16, Two (2) PCIe x1, M2 Slot Graphics : Intel HD Graphics Audio : Integrated 5.1 channel High Definition Communications : Ethernet 10/100/1000 Mbps I/O Ports : Front: Two (2) USB 3.0, Rear: Four (4) USB 2.0, headset, RJ-45, HDMI, VGA, Memory-card reader Power : 240 W Dimensions : 380 x 175 x 436.3 mm Weight : Starting at 8.5 kg