This desktop is powered by the 2.2 GHz Intel Pentium E2200 dual-core processor, which increases the efficiency and speed of the PC while running multiple programs and the latest multi-threaded software. Store more music, videos, and data on the super-sized 500 GB Serial ATA hard drive, which offers fast transfer rates. It also includes an open drive bay for an optional HP Pocket Media Drive (which can add up to 160 GB of storage). Other features include 3 GB of RAM (which can be bumped up to 8 GB), an Intel GMA 3100 graphics (with up to 287 MB of total graphics memory), a wide variety of connection ports on both the front and rear of the box, and a 15-in-1 memory card reader that's compatible with today's most popular digital camera formats.

It comes preinstalled with Microsoft Windows Vista Home Premium (Service Pack 1), which includes all of the Windows Media Center capabilities for turning your PC into an all-in-one home entertainment center. In addition to easily playing your DVD movies and managing your digital audio library, you'll be able to record and watch your favorite TV shows (even HDTV). Vista also integrates new search tools throughout the operating system, includes new parental control features, and offers new tools that can warn you of impending hardware failures.

The Basics

• Processor: The 2.4 GHz Intel Pentium E2200 dual-core processor delivers additional computing resources and help expand the PCa€™s capabilities by providing higher throughput and simultaneous computing. You'll be able to perform multiple tasks such as digital rendering and gaming all while running virus scan or other background tasks seamlessly. And its Intel 64 architecture is also ready for tomorrow's 64-bit applications, and offers enhanced performance through improved virtual memory. Each core shares 1 MB of L2 cache, and they have an 800 MHz front-side bus. (An L2, or secondary, cache temporarily stores data; and a larger L2 cache can help speed up your system's performance. The FSB carries data between the CPU and RAM, and a faster front-side bus will deliver better overall performance.)

• Hard Drive: The super-sized 500 GB Serial ATA (SATA) hard drive (7200 RPM) offers a wealth of storage space, perfect for storing a vast multimedia collection or for editing digital video. This SATA hard drive has a 3Gb/s interface speed that enables up to 300MB/s data transfer rates (double the speed of the current SATA interface of 1.5Gb/s).

  This desktop also includes a drive bay that fits an optional HP Pocket Media Drive, which enables you to add up to 160 GB of additional storage. The Pocket Media Drive also works with any USB-enabled PC, for easy transferring of multimedia files from other computers in your home.

• Memory: The 3 GB of installed RAM (PC5300, 2 x 1 GB and 2 x 512 MB) is an excellent start, but you'll want to add more RAM to handle today's demanding multimedia and gaming software. It also offers a top-of-class 667 MHz speed. This desktop has an 8 GB maximum RAM capacity (4 x 2 GB). To receive the faster data transfer benefits of the dual-channel DDR2 RAM, any RAM additions require memory modules of same capacity and clockspeed.

• DVD/CD Drive: This multiformat DVD/CD drive is compatible with writing both DVD+ and DVD- disc formats as well as dual-layer (DL) DVD+/-R discs, which can store up to 8.5 GB of data. It features 8x DVD-R DL Write Once, 8x DVD+R DL Write Once, 16x DVD+R, 8x DVD+RW, 16x DVD-R, 6x DVD-RW, 12x DVD-RAM, 40x CD-R, 32x CD-RW write speeds and 40x CD-ROM, and 16x DVD-ROM read speeds.

  This LightScribe DVDRW drive lets you laser-etch silkscreen quality text and images on to CDs and DVDs . Your software, PC and discs work together for a no-hassle way to burn just the labels you want. After you burn content, just flip the disc over, reinsert and burn your label--anything from a simple title to a full-disc work of art.

• Keyboard & Mouse: It comes with an HP multimedia keyboard and scroller mouse (both with PS/2 connections).

Networking, Connectivity & Expansion
For expansion, this desktop has one PCI slot (occupied), two PCI Express x1 slot (available), one PCI Express x16 slots (available), two 5.25-inch bays (one available), and three 3.5-inch bays (one available). It comes with the following external connectors:

• 6 USB 2.0 ports for connecting a wide range of peripherals--from digital cameras to MP3 players (2 in front, 4 in rear)
• 2 FireWire (also known as IEEE 1394 or i.Link) port for connecting digital video camcorders and other peripherals (1 in front, 1 in rear)
• 2 PS/2 ports for connecting keyboards and mice
• 1 VGA monitor port
• 2 headphone and 2 microphone (front and rear)
• 2 line-in (front and rear)
• Digital coaxial audio input/output as well as surround sound speaker outputs (rear/side/center)
• 15-in-1 multi-format memory card reader, compatible with CompactFlash I/II, IBM Microdrive, Secure Digital (SD), miniSD, MultiMediaCard (MMC), Reduced Size MultiMediaCard (RS-MMC), MultiMediaCard Plus (MMC plus), MultiMediaCard Mobile (MMC mobile), Memory Stick, Memory Stick Pro, Memory Stick Duo, Memory Stick Pro Duo, SmartMedia, and xD Picture Card.
• 10/100/1000 Gigabit Ethernet
• 56K modem

Operating System
Windows Vista Home Premium is the operating system for users with advanced computer needs, and it includes all of the Windows Media Center capabilities for turning your PC into an all-in-one home entertainment center for watching DVD movies and accessing your digital audio library. You can also use Windows Media Center to record and watch your favorite TV shows (even HDTV) and to access new kinds of online entertainment content. Computers that include Windows Vista Home Premium and an auxiliary Windows SideShow display will also allow you to access key data even when your computer is off. It is also easier than ever to share files between other PCs in your household and to manage your laptop computer settings to more securely connect via Wi-Fi.

Every edition of Windows Vista provides the essential tools and technologies to help protect you whether you are browsing the Internet, connecting to a wireless network, or just reading e-mail. All editions of Windows Vista include new tools that can warn you of impending hardware failures long before you have lost any important personal data. And, all Windows Vista editions include parental control features that allow you to manage and monitor your family's use of games, the Internet, instant messaging, and other activities.

Preloaded Software
Includes Microsoft Works, Microsoft Office 2007 Student and Teacher Edition (60-day trial), Muvee Autoproducer, Cyberlink DVD Suite, PC Recovery, HP PhotoSmart Essentials, and Symantec Norton Internet Security 2008 (with 60 days of Live Update).

Dimensions & Weight
It measures 16.3 x 6.9 x 15.25 inches (LxWxD) and weighs approximately 22 pounds.

What's in the Box
This package contains the HP Pavilion a6400f desktop PC, power cable, keyboard, and mouse. It is backed by a limited warranty for parts and labor for one year from date of purchase as well as technical telephone assistance for one year. Software is also covered for 90 days from date of purchase.