This product is either discontinued or we cannot get that from suppliers.
Sandisk FUSSAN256GSDDD3-1, 256 GB, Read Speed up to 150 MB/s, Interface micro-USB and USB 3.0 connectors, Operating temperature 32° - 95° F (0° – 35° C), Storage temperature 158° F (-10° – 70° C).
The SanDisk Ultra Dual Drive m3.0 makes it easy to transfer content from your phone to your computer. With a micro-USB connector on one end and a USB 3.0 connector on the other, the drive lets you move content easily between your devices.