HP Elite HPE-400F PC Desktop AMD Phenom II X4 3Ghz 8GB RAM 1TB HDD DVD+RW Windows 7 Home Premium AMD Phenom II 945 Quad-Core Processor (3.0 GHz, 2MB L2 + 6MB Shared L3 Cache, 4000MHz System Bus); 8GB PC3-10600 DDR3 SDRAM memory (4x2GB) (expandable to 16GB); 1TB (Terabyte) 7200 RPM Serial ATA hard drive; Genuine Windows 7 Home Premium 64-bit ATI Radeon HD 5450 graphics card (512MB DDR3 dedicated graphics memory) with support for Microsoft DirectX 11; SuperMulti DVD Burner with LightScribe Technology; High Definition Audio with up to 7.1 surround sound capabilities External Ports: Headphone & Microphone (Front), 3 USB 2.0 ports (Front), 4 USB 2.0 ports (Back), DVI & HDMI available on the graphics card, Digital Audio Out; LAN; Microphone/Line-in/Line-out; Rear speaker-out; Side speaker out; Center (subwoofer) 10/100Base-T network interface, Wireless LAN 802.11b/g/n HP USB keyboard and optical mouse, Front panel 15-in-1 memory card reader