Device Type: Internal Solid State Drive (SSD). Memory Components: 3D NAND. Interface: PCI-Express 4.0×4 NVMe. NVMe (PCIe Gen4 x4) technology with up to 5000MB/s sequential reads, random read/write 650K/800K IOPS. Performs up to 43% faster than the fastest Gen3 NVMe SSDs. Rated at MTTF greater than 1.5 million hours for extended longevity and reliability. Backward compatibility with Gen3. 1PC x Crucial P3 Plus SSD. Please give us a chance to make things right before leaving any neutral or negative feedbacks. We appreciate your understanding.