CybertronPC Lazer Desktop - AMD Athlon 5150 1.6GHz Quad-Core Processor, 4GB DDR3 Memory, AMD Radeon HD 8400 Graphics, 500GB Hard Drive, DVD&plusmn;RW, Microsoft Windows 8.1 64-Bit (Discontinued by Manufacturer) System: AMD Athlon 5150 1.60GHz Quad-Core | 4GB DDR3 | 500GB HDD | Genuine Windows 8.1 64-bit Graphics: AMD Radeon HD 8400 | 24X DVDRW Dual-Layer Drive | Audio: 7.1 Channel | Gigabit LAN | Keyboard and Mouse Expansion Bays/Slots Total(Free): 1(0) Ext. 5.25" | 2(1) Int. 3.5" | 1(1) Mini PCI-e | 1(1) PCI-e X16 | 2(1) DIMM 240P Connectivity: 2x USB 3.0 | 4x USB 2.0 | 1x RJ-45 Network Ethernet 10/100/1000 | Audio | 1x DVI | 1x VGA | 1x HDMI Chassis: In Win BP655 Mini-ITX Case w/200 Watt Power Supply | 1 Year Parts & Labor Warranty | Free Lifetime Tech Support