Capacity:128GB/256GB/512GB/1TB/2TB/4TB M.2 SATA SSD of the sequential read speed is up to 500MB/S, and the sequential write speed is up to 450MB/S Perfect for laptop, up to 4TB delivers more flexibility for data access. Extand more space for your devices and take the stress out of device storage when downloading games, sharing files, videos, and more.