Transfer 4GB in less than 15 seconds with the SanDisk Extreme Pro USB 3.1 Solid State Flash Drive. Solid state speeds compacted into USB-sized storage Quality metal casing for durability Retractable design to keep your USB and files safe The SanDisk Extreme PRO USB 3.1 Solid State Flash Drive delivers super-fast solid state performance in a USB flash drive. A game-changer in the USB storage category, this flash drive offers read speeds of up to 420MB/s and write speeds of up to 380MB/s that let you transfer everything fast. With 256GB of storage, there’s plenty of room to easily manage massive files. The sophisticated aluminum design is both stylish and durable, and the included SanDisk SecureAccess software, with 128-bit file encryption and password protection, ensures that your private files stay private. Read/Write speeds of up to 420MB/s and 380MB/s Blazing-fast performance lets you transfer a full-length 4K movie to drive in less than 15 seconds or 1000 photos in less than 25 seconds. Solid state USB flash drive The SanDisk Extreme PRO USB 3.1 Solid State Flash Drive delivers the performance, capacity, and reliability of an SSD in ultimate portability of a USB flash drive. Aluminum metal casing for durability The SanDisk Extreme PRO USB 3.1 Flash Drive features an elegant yet durable aluminum metal casing to help protect the drive from everyday wear and tear. SanDisk SecureAccess software protects your privacy Create a private folder on your drive with SanDisk SecureAccess software. This 128-bit AES encryption software makes it easy to password-protect critical files. Drag and drop files into the vault, and they’ll be protected. USB 3.1 enabled, yet backward-compatible The SanDisk Extreme Go USB 3.1 Flash Drive is backward-compatible so you can plug it into any USB 2.0 or 3.0 port.