Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset :IIntel C246 Processors :Intel Xeon or i7 8th Gen Memory Support : DDR4 memory up to 2666 MT/s data rate Hard Drive : HDD or SSD Removable Media : Optional Expansion Bays :(2) External 13.3 cm (5.25 in) bays, (2) External 13.3 cm (5.25 in) bays Expansion Slots :(1) PCIe Gen3 x16 slot, (1) PCIe Gen3 x4 slot/x16 connector, (1) PCIe Gen3 x1 slot/x4 connector, (1) PCIe Gen3 x1 slot/x4 connector, (2) M.2 storage (PCIe Gen3 x4) Graphics : Depending on model Audio : Conexant CX20632 5.1 HDA codec Communications :Intel I350-T2 2-Port 1GbE NIC I/O Ports :Front: (2) x USB 3.0, (1) x USB 3.1 Back: (2) χ DisplayPort, (2) χ USB 2.0 ports (4)x USB 3.0 ports, (1) RJ-45, Internal I/O ports : (1) USB 3.0 port, (2) USB 2.0 ports Power :250 W or 500W or 650W Dimensions : 356 x 169 x 435 mm Weight :Starting at 8.2 kg