The Delock Adapter SATA Thunderbolt, although I have only a few days, but the first backup was as fast and problem-free (unlike my experience with the Freecom Quattro Dock) that I now advance to write a good review. For my purpose, this adapter is perfect. I'm not the speed freak, like now recounts exactly fast is the adapter, but for regular backups on disks that I store then this adapter is perfect: I take a hard drive from the film, stick it on the adapter, close to the power cable, and then by Thundebolt cable to my MacBook Pro. Everything so far smoothly, and my backups per CarbonCopyCloner functioned perfectly and according to the respective plates very quickly. After the backup eject cord, hard drive, back in the envelope and then store again. Excellent. I hope that the device remains reliable even in the long run. If so, this was a great investment for the backups with us in the family!