Operating System : Windows 10 Home & Pro MAR Chipset : Intel B360 Processors : Intel 9th Gen Core i3, i5, i7, Intel Pentium G, Intel Celeron G Memory Support : Two (2) DIMM slots , Up to 64 GB DDR4-2666 SDRAM Hard Drive : SATA 7200 rpm or SSD, M2 SSD Removable Media : Optional DVD Expansion Bays : (2) 6.35 cm (2.5 in) internal storage drive or (1) 3.5 in, (1) 8.89 cm (3.5 in) internal storage drive Expansion Slots : (1) M.2 PCIe x1 2230 (for WLAN), (1) M.2 PCIe x4 2280/2230 Combo (for storage) Graphics : Intel HD Graphics 630/610 Audio : Conexant CX20632 Communications : Realtek RTL8111HSH-CG Gigabit Network (GbE) connection (standard) I/O Ports : Front: (2) USB 3.1, Rear: (4) USB 2.0, (2) USB 3.1, (1) DisplayPort 1.2, (1) VGA, (1) Audio line-in, (1) Audio line-out, (1) RJ-45 Ethernet, Power : 180 W Dimensions : 269.24 x 297.18 x 93.98 mm Weight : 4.6 kg