Description

An M.2 NVMe module with an "M" key is a high-performance solid-state drive (SSD) that connects to a motherboard via the M.2 slot using the NVMe protocol over the high-speed PCIe bus, providing significantly faster speeds than SATA-based drives by utilizing multiple PCIe lanes (typically x4) for direct, low-latency communication with the CPU. The "M" key is a physical notch on the connector that ensures compatibility, preventing incorrect insertion and specifying its capability to support NVMe and PCIe communication.