Samsung 990 PRO 4TB PCIe 4.0 NVMe M.2 2280 SSD – Storage Capacity: 4TB – Sequential Read Speed: Up to 7,450 MB/s – Sequential Write Speed: Up to 6,900 MB/s – Random Read: Up to 1400K IOPS – Random Write: Up to 1550K IOPS – Interface: PCIe Gen 4.0 x4, NVMe 2.0 – Controller: Samsung in-house – Security: AES 256-bit – TBW: 2400 – MTBF: 1.5 Million Hours – No Heatsink – MZ-V9P4T0BW