The Lenovo System Planar Board is a motherboard designed for integration into Lenovo computer systems, providing the essential foundation for system connectivity and component communication. This motherboard features standard ATX form factor compatibility with dimensions of 305 mm x 244 mm and supports Intel or AMD processor sockets depending on the specific model. It includes multiple expansion slots with PCI Express x16, PCI Express x1, and legacy PCI interfaces, as well as four DDR4 memory slots that support up to 128 GB of RAM capacity with speeds of up to 3200 MHz. Connectivity options include six SATA III ports for storage devices, dual M.2 slots for NVMe SSDs, integrated Gigabit Ethernet, and USB 3.2 Gen 2 ports. The board integrates audio with 7.1-channel support and includes comprehensive cooling solutions with heatsinks on voltage regulator modules and the chipset. Designed for reliability in business and workstation environments, it features solid capacitors and enhanced power supply systems. Compatibility includes standard ATX cases with corresponding mounting points and requires compatible power supplies with 24-pin ATX and 8-pin EPS connectors. This motherboard serves as a central component for building or upgrading Lenovo-compatible desktop systems, emphasizing stable performance and expandability for professional applications.