Interface: PCI-Express 3.0 x4, NVMe 1.3, Form Factor: M.2 2280, Total Capacity: 512GB, NAND: NAND Flash, Sequential Read speed: Up to 1700 MB/s, Sequential Write speed: Up to 1550 MB/s, Random Read IOPS: Up to 270K, Random Write IOPS: Up to 340K, Mean time between failure (MTBF): 1.5M hours, Power Consumption (Active): Avg. read 3.5W ; Write 3.3W, Power Consumption (Idle): 1.8mw, Warranty: 05 Years The Host Memory Buffer (HMB) feature utilizes the DMA (Direct Memory Access) of PCI Express to allow SSDs to use some of the DRAM on PC system, instead of requiring the SSD to bring its own DRAM.