PCIe Gen 3.0 x4, NVMe 1.3, Samsung Phoenix Controller, Samsung V-NAND 3-bit MLC, TCG/Opal, IEEE1667 (encrypted drive), AES 256-bit Encryption (Class 0), 512 MB Low Power DDR4 SDRAM with Read and Write speeds of up to 3,400 MB/s and 2,500 MB/s, respectively.