Intel D90159-403 is a micro-ATX (mATX) desktop motherboard featuring LGA775 socket compatibility for Core 2 Duo and Core 2 Quad processors with 1333MHz FSB support. The board supports dual-channel DDR2 memory up to 8GB and includes integrated graphics. Connectivity comprises PCI Express x16 slot for discrete graphics, PCI slots for legacy expansion, SATA II ports for storage, and standard rear I/O including USB 2.0, audio, and Ethernet. This micro-ATX form factor suits compact builds and small form factor systems. Typical applications include office workstations, thin clients, and legacy system rebuilds where Socket 775 components remain cost-effective. Refurbished unit; tested and guaranteed, available via quote.