Intel 845GL CEL/P4 400MHZ FSB UATX ( BOXD845GLVAL ) Supports Intel Celeron processors and Intel Pentium 4 processors (with 400-MHz system bus) in the mPGA478-pin package. Two DDR SDRAM DIMM sockets: Designed to support up to 2 GB of double-data-rate SDRAM memory (DDR266, DDR200). Three PCI slots: Expansion slots for custom system configurations and future add-in card upgrades. Four Hi-Speed USB 2.0 ports: Two rear ports and header for two front-panel USB connectors for up to 40 times the performance of USB 1.1 Integrated Intel PRO/100 network connector: On-board 10/100-Mbps Ethernet LAN connectivity.