With up to 2TB capacity, the WD_BLACK SN770M NVMe SSD expands the storage of your small gaming device or M.2 2230 compatible laptop. This M.2 2230 SSD features PCIe ® Gen 4.0 3 for speeds up to 5,150 MB/s2 (1TB and 2TB 1 model) , Western Digital 's nCacheT 4.0 technology, and support for Microsoft's DirectStorage. I am. Take your large game library with you wherever you go, and immerse yourself in games with lightning-fast game installation and level loading. You can also monitor your drive with Western Digital Dashboard (Windows® only) software .