Genuine Dell Intel 865VP Intel P4 mPGA478 socket MotherBoard For Dell Optiplex 170L / GX170L Part Numbers: KH431, U2575, WC297 CHIPSET: Intel 865VP PROCESSOR: Support for Intel P4, mPGA478 socket, Support for Intel Celeron D, mPGA478 socket SUPPORTED MEMORY: 2 - 184 DDR DIMM slots); supports single or double sided DIMMs AUDIO: Onboard 3D sound card. VIDEO Onboard 64Mb SVGA PERIPHERAL INTERFACES: (4) 2.0 USB (front and back) / (2) PS/2 ports (mouse and Keyboard) / (1) parallel printer port / (1) serial port(s), 2 - IDE connectors supporting UDMA 33 and ATA-66/100, 1 - 10/100/1000 Gigabit Port, 1 - FDD connector. EXPANSION CAPABILITY: 3 PCI 32Bit/33MHz slot