Product Detail AMD Phenom II 840T Quad-Core Processor (2.9 GHz, 2MB L2 + 6MB Shared L3 Cache, 4000MHz System Bus); 6GB PC3-10600 DDR3 SDRAM memory (3x2GB) (expandable to 16GB); 1TB (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; Combo Blu-Ray/SuperMulti DVD Burner with LightScribe Technology; High Definition Audio with up to 7.1 surround sound capabilities External Ports: Headphone, 2 USB 2.0 ports (Front), 4 USB 2.0 ports (Back), HDMI and DVI-D (Back), Microphone/Line-in/Line-out, Rear speaker-out, Side speaker out, Center (subwoofer) (Back), Coaxial Digital Audio Out (SP-DIF) 10/100Base-T network interface, Wireless LAN 802.11b/g/n HP wireless keyboard and optical mouse, Front panel 6-in-1 memory card reader . The "HP Pavilion Slimline s5660f Desktop PC - Black" is best product for you. We recommended HP Pavilion Slimline s5660f Desktop PC - Black