I chose this disc for its compatibility with our new addition wifi channel decoder (but the latter has an internal disk 3 gigabytes which is enough for us) So I'm using for backups and storage of large files I wanted a USB compatible with USB 2 3 Cable side, it's always been the weakness of this kind of product, so I learned to be very careful there. As soon as I finish use it, I put it in the rigid shell pouch bought for the occasion