Operating System : Windows 10 Home & Pro MAR Chipset : Intel B360 Processors : Intel 8th Gen Core i3, i5, i7, Intel Pentium G, Intel Celeron G Memory Support : Two (2) DIMM slots , Up to 32 GB DDR4-2666 SDRAM Hard Drive : SATA 7200 rpm or SSD, M2 SSD Removable Media : Optional DVD Expansion Bays : 1 slim ODD, One 3.5" HDD convertible to two 2.5" HDD Expansion Slots : 1 M.2 2230, 1 M.2 2230/2280, 1 PCIe 3 x1, 1 PCIe 3 x16, One 4-in-1 media card reader (1 M.2 slot for WLAN and 1 M.2 2230/2280 slot for storage.) Graphics : Intel HD Graphics 630 Audio : Conexant CX20632 codec Communications : 1 Gigabit I/O Ports : Front: 1 headset connector, 2 USB 3.1 Gen 1, Rear: 1 audio-in, 1 audio-out, 1 DisplayPort 1.2, 1 power connector, 1 RJ-45; 1 VGA, 2 USB 3.1 Gen 1, 4 USB 2.0, (optional Serial) Power : 180 W Dimensions : 27 x 29.6 x 9.5 cm Weight : 4.6 kg