SanDisk Extreme GO Flash Drive CZ800 64GB USB 3.1 Gen 1 USB-A USB3.1 200 MB/s Black Retractable Lifetime Limited Transfer A Full-Length 4K Movie In Less Than 40 Seconds With write speeds of up to 150MB/s, the SanDisk Extreme® Go USB 3.1 Flash Drive lets you quickly copy and go. Up to 35X faster than standard USB 2.0 drives7, so you can transfer a full-length 4K movie to the drive in less than 40 seconds1. The design keeps the retractable connector protected when not in use, and the included SanDisk SecureAccess™ software provides password protection2 of your private files while leaving the rest of the drive available for sharing. High-speed performance With write speeds of up to 150MB/s7, the SanDisk Extreme® Go USB 3.1 Flash Drive is 35X faster than standard USB 2.0 drives7 so you can transfer a full-length 4K movie in less than 40 seconds1 or 1000 photos in less than 60 seconds3. Retractable design The USB connector retracts to keep it safe when you’re not using it. USB 3.1 Gen 1 enabled, yet backward-compatible The SanDisk Extreme Go USB 3.1 Gen 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 files2. Drag and drop files into the vault, and they'll be protected. Easy file recovery with RescuePRO Deluxe software The drive comes with a RescuePRO Deluxe data recovery software download offer6. This software makes it easy to recover files that have been accidentally deleted