Micron 7400 PRO Series 960GB PCI Express NVMe 4.0 x4 3D NAND Read Intensive U.3 Solid State Drive. The Micron is a part of the 7400 PRO Series, boasting an impressive storage capacity of 960 Gigabytes (GB). This Peripheral Component Interconnect Express (PCI-E) 4.0 x4 Non-Volatile Memory Express (NVMe) Read-intensive SSD is designed to deliver high performance and reliability for various computing needs.