Operating System: Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset: Intel® Q270 Chipset Processors: Intel 6th & 7th generation Core i3,i5,i7, Intel Pentium Memory Support: Two (2) SODIMM slots , Up to 32 GB DDR4 2400MHz Display: 21.5" IPS Wide Viewing Angle WLED, Full HD 1920x 1080 resolution with anti-glare coating; optional projected capacitive touch screen Hard Drive : SATA HDD or SSD, M.2 SSD Removable Media : N/A Expansion Bays : Internal: One (1) 2.5-inch Expansion Slots : Two M.2 connectors (one for Wi-Fi card, one for Solid State Drive) Graphics : Intel HD Graphics Audio : Integrated Audio Communications : Integrated Intel® I219-V Ethernet LAN 10/100/1000 I/O Ports : Six external USB ports: USB 3.1 Gen 1 x 2 (side, one with PowerShare), USB 3.1 Gen 1 x 2 (rear), USB2.0 x 2 (rear); HDMI 1.4 Out (rear), DisplayPort 1.2 Out (rear), Universal Audio Jack (side), Audio Line-Out (rear), RJ-45 (rear) Input Devices : Standard Keyboard, Mouse (USB) Power : 80 PLUS internal Power Supply Unit; optional 155W EPA Bronze or 200W EPA Platinum Dimensions : 36.30 x 52.78 x 6.09 cm Weight : 6.32 kg