For uncompromising professionals looking for high speed, high capacity and reliability to manage their massive files. Super fast solid-state performance with read speeds of up to 420MB/s and write speeds of up to 380MB/s. Transfer a full-length 4K movie to drive in less than 15 seconds, or a 1000 photos in less than 25 seconds. Sophisticated retractable design with a durable aluminum metal casing. SanDisk SecureAccess software included for 128-bit AES file encryption and password protection. This product is compatible with ALL windows platforms.