Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : AMD A75 Processors : AMD A-Series Quad-Core Processors, AMD A-Series Dual-Core Processors Memory Support : Four (4) DIMM slots , Up to 32GB DDR3 1600MHz Hard Drive : SATA 6.0 Gb/s 7200rpm up to 1TB or SSD Removable Media : DVD-ROM/DVD Recordable Expansion Bays : External: Two (2) 5.25-inch, One (1) 3.5-inch Internal: Two (2) 3.5-inch Expansion Slots : One (1) PCI, One (1) PCIe 2.0 x1, Two (2) PCIe 3.0 x16 Graphics : AMD Radeon HD Graphics Audio : High Definition Audio with Realtek ALC221 codec (all ports are stereo) Communications : Broadcom NetXtreme BCM 5761 Gigabit Ethernet I/O Ports : Front: Four (4) USB 2.0, Audio I/O, Rear: Four (4) USB 3.0, Two (2) USB 2.0, VGA, DP, PS/2, Serial, RJ-45, Audio I/O Input Devices : Standard Keyboard, Mouse (USB or PS/2) Power : 320W Dimensions : 43.1 x 37.7 x 17.7 cm Weight : 9.3 kg