Operating System: Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel® B250 Chipset Processors : Intel 6th & 7th generation Core i7, i5, Core i3 Dual Core, Pentium Dual Core and Celeron Dual Core Memory Support : Two (2) DIMM slots , Up to 32 GB Non-ECC dual-channel 2400MHz DDR4 SDRAM  Hard Drive : Up to 2TB SATA or Solid State Drive (optional). M.2 Removable Media : SATA DVD-ROM drive, SATA DVD Writer Drive, SATA Blu-ray Writer Drive (SlimLine) Expansion Bays : Internal: One (1) 2.5-inch, One (1) 3.5-inch Expansion Slots : One (1) PCIe x16 Half Height, One (1) PCIe x1 Half Height Graphics : Integrated Intel HD Graphics 510/530 (6th Gen) or 610/630 (7th Gen) Audio : Integrated Audio Codec Communications : Integrated Realtek RTL8111H Ethernet LAN 10/100/1000 I/O Ports : Front: Two (2) USB 3.0, Two (2) USB 2.0, microphone, headphone, Rear: Two (2) USB 3.0, Two (2) USB 2.0, HDMI, DisplayPort, UAJ,RJ-45, Stereo L/I, Speakers L/O Input Devices : Dell USB Entry Keyboard, Dell USB Multimedia Pro Keyboard Dell USB Entry Optical Mouse, Dell Laser Mouse Power : 180W typical 85% Dimensions : 29.2 x 29 x 9.7 cm Weight : 5.14 kg