Excerpt: This is one of the few economically priced portable drives on the market with a Thundrerbolt interface. I considered going with a SSD solution, although this solution is nearly one tenth the price of other solutions I reviewed. The only down side is that the drive is only 5400 rpm. Performance is good, although would be better if 7200.
Pros: Compact, Easy To Set Up, Easy to use, High Capacity, Portable
Summary: I have a Fall 2013 entry level, 21" iMac. iMac is a non-fusion model with the standard 5200 rpm hard drive. The iMac was purchased as an "upgrade" to replace a retiring 2008 iMac but the beach ball cursor appeared so often that it didn't feel like much of an upgrade. So thinking the hard drive was the problem, and that I had a spare Samsung 128GB SSD laying around, I bought this to see if it would help.
Summary: I have a MacBook Pro 15" with a USB 3 connection on it. This definitely sped up transfer rates and amazingly enough this little thing hooks right up and works even better with a bare 2.5 drive.
Summary: This is a little pricey for what it is, but I think I was expecting too much from it. I use the drive for my Time Machine backups, swapping in 1 of the 2 Seagate GoFlex drives I have, storing the alternate off-site. What I've found is that I can close the lid of the laptop and hibernate without issue with the drives in the standard USB configuration, but when using the adapter and the Thunderbolt port the drives are "unsafely" ejected when doing the same.
Summary: Some may like it, some may hate it. I lost two hard drives trying to use this. Plugged in good, working hard drives and suddenly they were completely dead as soon I plugged them into this device. Thought it might have been my fault when the first one died. Hung onto it too long before trying it with another drive. No way I can pull it out of the trash for even a partial refund now.
Summary: A back up that lost all my data! This thing stopped working and now I can't retrieve any data, I tried everything including removing the drive and running it through an external power device, it is dead! Can't believe I lost all my data, infuriating!