World's First 176-Layer PCIe Gen4 QLC SSD. The Micron 2400 NVMe SSD is the world's first most advanced 176-layer QLC NAND based PCIe Gen4 NVMe SSD. High-density, cost-efficiency, Micron 176-layer QLC NAND, custom NAND, custom dynamic write acceleration, smart power efficiency, Micron host memory buffer (HMB) technology, and standards-based security support make the Micron 2400 SSD a compact, secure storage powerhouse. Offered in the ultra compact 2230 M.2 form factors, this QLC SSD is ideal for high-capacity storage in form factors to fit thin and light designs without compromising the user experience.