Transfer a full length 4K movie in less than 40 seconds with the SanDisk Extreme GO USB 3.1 Flash Drive. Extreme transfer speeds when you need them Up to 35x faster than standard USB 2.0 drives Sleek, retractable design With write speeds of up to 150MB/s, and even faster read speeds, the SanDisk Extreme GO USB 3.1 Flash Drive lets you quickly copy and go. Up to 35x faster than standard USB 2.0 drives, so you can transfer a full-length 4K movie to the drive in less than 40 seconds. The design keeps the retractable connector protected when not in use, and the included SanDisk SecureAccess software provides password protection of your private files while leaving the rest of the drive available for sharing. Retractable design Keep the dirt away and avoid accidents The USB connector retracts to keep it safe when you’re not using it. 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. 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 files3. Drag and drop files into the vault, and they’ll be protected. 4K transfer times based on 4K video transfer (4GB) with USB 3.1, Gen 1 or USB 3.0 host device. Results may vary based on host device, file attributes and other factors.