Dell Optiplex GX280 Small Mini Tower (SMT) Motherboard Mainboard Systemboard, Compatible Dell Part Numbers: G5611, Y5638, U4100, H7276, FC928, U7915, K5146, KC361, XF961, XF954, X7967, C5706 MOTHERBOARD DOES NOT INCLUDE PROCESSORS OR MEMORY!!!! MOTHERBOARD ONLY! Chipset: Intel 915 Express, Supported Processors: Socket LGA775, Pentium 4, Celeron, Prescott Processors up to 3.2ghz, Hyper-Threading Technology Support, 533/800 MHz system bus, Supported Memory: 4 Dual Channel DIMM Support for DDR2-400/533 4 GB MAX system memory, 1 16x PCI-Express Video Slot, Integrated Intel 900 Graphics Accelerator, Integrated 10/100/1000 Lan Integrated ADI Sound, 2 Serial ATA Hard Disk Connectors, One ATA-66/100/133 IDE Hard Disk Connector, One Floppy Connector 3 PCI Card Slots, 1 1X PCI Express, 6 USB 2.0 Ports, Audio Ports for line-in, line-out, and microphone, 1 Serial/1 Parallel Port, PS2 Mouse and Keyboard Ports