Genuine Windows 7 Home Premium 64-bit-AMD Dual-Core E-450 Accelerated Processor-1.65GHz-AMD A45 FCH Chipset-512KBx2 L2 CACHE-3GB PC3-10600 DDR3 SDRAM memory(3) (1x1GB and 1x2GB) (expandable to 8GB-500GB [Serial ATA] hard drive-SuperMulti DVD Burne-AMD Radeon? HD 6320 integrated graphics-Up to 1460MB Total Available Graphics Memory as allocated by Windows 7-10/100Base-T network interface-Integrated audio, 6 speaker configurable with up to 5.1 surround sound capabilities-2 DIMM (240-pin, DDR3) (occupied-1 external 5.25" (occupied-Headphone; Microphone (Front)-4 USB 2.0 ports (Back)-2 USB 2.0 (Front)-Microphone-in/Line-in/Line-out (Back)-10/100Mbps LAN (Back)-VGA-out and DVI-out (Back)-HP USB keyboard and optical mouse-Visit our Consumer Support Forum, available 24 x 7 in English,French or Spanish at www.hp.com/go/supportforum-Contact technical support (available 24 x 7, toll-free phone, chat,or email