Operating System: Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset: Intel Q170 Processors: Intel 6th generation Core i5-i7 Quad Core, Core i3 Dual Core Memory Support: Four (4) DIMM slots , Up to 32 GB DDR4 Hard Drive : Up to 2 TB SATA, 7200rpm or SSD (optional) Removable Media : DVD-ROM/ DVD-ReWritable Expansion Bays : External: Two (2) 5.25-inch, Internal: One (1) 3.5-inch Expansion Slots : One (1) PCIe x 4, One (1) PCIe x 16, One (1) PCI Graphics : Integrated Intel HD Graphics 530 Audio : Integrated Audio Communications : Integrated Intel i219-LM GbE Network Connection I/O Ports : Front: Two (2) USB 2.0, Two (2) USB 3.0, Cardreader (optional), Audio I/O Rear: Four(4) USB 3.0, Two (2) USB 2.0,Two (2) DP, HDMI, VGA, Serial, RJ-45, Audio I/O, PS/2 Input Devices : Standard Keyboard, Mouse (USB or PS/2) Power : 240 W Dimensions : 35 x 15.4 x 9.27.4 cm Weight : 8 kg