Operating System: Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset: Intel B250 Processors: Intel 6th & 7th generation Core i5-i7 Quad Core, Core i3 Dual Core Memory Support: Two (2) DIMM slots , DDR4 Up to 32 GB 2400 MHz Hard Drive : Up to 2 TB or SSD (optional) SATA or M.2 Removable Media : DVD-ROM/ DVD-ReWritable slim, Card reader (optional) Expansion Bays : 1 internal 3.5 HDD(convertible to 5.25 ODD), 2 internal 2.5 HDD, 1 internal slim ODD Expansion Slots : PCIe 3.0 x16; (3x) PCIe x1; Graphics : Integrated Intel HD Graphics (depends on CPU) Audio : Integrated Audio Communications : Integrated Intel® i219-V Ethernet LAN 10/100/1000 I/O Ports : 8 External USB - 4 x 3.0; 4 x USB 2.0; 1 RJ-45; Display Port 1.2; 1 HDMI 1.4; Input Devices : Standard Keyboard, Mouse Power : 240 W Dimensions : 35 x 15.4 x 27.4 cm Weight : 7.93 kg