If your DotDisk 80Gbps SSD Enclosure (ST-EDD80C, ST-EDD80S) does not mount, or drops off during use, check the drive, the cable, and the format.

How to get the DotDisk to mount and stay connected

1. Connect the DotDisk to a Thunderbolt 4, Thunderbolt 5, or USB4 port that runs at 40Gbps or faster, using the included cable. The DotDisk does not work on a standard USB-C port or a USB 3.x port, which is a common reason it does not appear.
2. Confirm the SSD is seated fully and is a supported NVMe drive. NVMe is the fast M.2 drive standard the enclosure is built for.
3. Open your computer's disk tool to find the drive. On Mac, open Disk Utility. On Windows, open Disk Management.
4. Format a new drive before first use. For use with a Mac only, format the drive as APFS. To use the drive on both Mac and Windows, format the drive as exFAT. Avoid NTFS, since a Mac can read NTFS drives but cannot write to them.
5. Avoid unpowered hubs, and plug the enclosure directly into your computer.