The HP Pavilion Elite m9400f delivers an amazing high-end home entertainment experience, DX10 3D Mainstream gaming, and power for the most demanding PC tasks. The AMD Phenom Quad-Core processor is the latest in cutting edge processor technology for the desktop PC. The AMD Phenom Quad-Core processor delivers four complete execution cores within a single processor, delivering unprecedented performance and responsiveness in multi-threaded and multi-tasking business and home use environments. And always stay connected to the Internet wherever you decide to place the desktop in your home with the built-in 802.11G/N Wireless card. If you want to do it all?get the HP Pavilion Elite m9000f Desktop PC and you'll have the latest, high-performance computing experience. LightScribe 16x DVD+-R/RW SATA Drive with Double Layer High Definition Audio, 8 speaker configurable Built-in 802.11b/g/n Wireless 10/100 Base-T Ethernet LAN 15-in-1 card reader Front ports - 2 x USB, IEEE 1394, Headphone, Microphone Back ports - 4 x USB, IEEE 1394, 2 x PS2 ports (keyboard, mouse), Audio left/right-in, Rear speaker-out, Side speaker out, Center, Microphone/Line-in/Line-out, RJ-45 (LAN), VGA, DVI-I (Dual-Link), HDMI out Expansion slots - 1 x PCI (one available), 3 x PCI Express x1 (occupied), 2 x PCI Express x16 (one available) Drive bays - 2 x 5.25 (one available), 2 x 3.5 (one available), Personal Media Drive Monitor is not included