Obtain the speed of an SSD in compact flash storage using the SanDisk 256GB Extreme Pro USB 3.1 Solid State Flash Drive. It is made for systems having a USB 3.1 interface. You can also connect the flash drive to USB 3.0 and 2.0 devices. The flash drive has a maximum reading speed of 420 Mbps and a maximum writing speed of 385 Mbps to transfer a 4K movie in approximately 14 seconds and up to 1000 photos in 25 seconds. Protect your private files with the included SanDisk SecureAccess software that adds a 128-bit AES encrypted password to the data. Recover accidentally deleted files with the RescuePRO Deluxe software. The durable aluminum casing offers a long-lasting functionality. This SanDisk flash drive has a working temperature range of 32°F to 95°F and can be stored in between 14°F and 158°F.