Dell Motherboard For Dimension 5150 / E510 / 5100 SMT Systems Part Number HJ054 Chipset: Intel 945G Express; Memory: 4x 533 MHz DDR2 SDRAM, 4 GB Max Total Processor: Socket 775, Pentium 4 5XX/6XX Processors 2.8-3.8 GHz, Hyper-Threading Technology Support Audio: Integrated 5.1 AC97 Sound; Video: Integrated Intel GMA 950 Expansion Capabilities: 2x PCI, 1x PCI Express x1, 1x PCI Express x16 Peripheral Interfaces: 1x VGA Monitor Connector, 1x RJ45 Ethernet/LAN Port, # 5x back-panel USB 2.0compliant connectors, # 5x back panel audio connectors