Intel D845GERG2 P4 S478 ATX Motherboard Support for the Intel Pentium 4 Processor with mPGA478 package Two DDR SDRAM DIMM sockets: Designed to support up to 2GB** of double-data-rate SDRAM memory (DDR266 or DDR333***) AGP 4X/2X 1.5V connector: Flexibility to upgrade via a high-end AGP graphics card Six Hi-Speed USB 2.0**** ports: Two dual-stack rear connectors and header for two front panel USB connectors for up to 40 times the performance of USB 1.1 AC'97 Audio with SoundMAX* Cadenza* with SPX* and stereo microphone inputs: Exceptional audio performance and excellent value