Product Detail AMD Phenom II 820 Quad-Core Processor (2.8 GHz, 2MB L2 + 4MB Shared L3 Cache, 4000MHz System Bus); 6GB PC3-10600 DDR3 SDRAM memory (3x2GB) (expandable to 8GB); 1TB (7200 RPM) Serial ATA hard drive; Genuine Windows 7 Home Premium 64-bit ATI Radeon HD 4200 integrated graphics; SuperMulti DVD Burner with LightScribe Technology; High Definition Audio with up to 7.1 surround sound capabilities External Ports: Headphone & Microphone (Front), 2 USB 2.0 ports (Front), 4 USB 2.0 ports (Back), VGA-out & DVI-D, Microphone/Line-in/Line-out; Rear speaker-out; Side speaker out; Subwoofer (Back), Coaxial Digital Audio Out (SP-DIF) 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 . The "HP Pavilion p6620f Desktop PC - Black" is best product for you. We recommended HP Pavilion p6620f Desktop PC - Black