Design:This enclosure is very easy to use, and the tool-less design makes it very easy to change different hard drives-almost like a docking station. The only strange part is that: the design seems to be up-side-down. The most reasonable placement of this enclosure should be lid-on-top, but the text printed on this enclosure suggests lid-on-bottom, very strange. The plastic material is okay, though I really prefer a metal enclosure.Quality:Pro:1. Support high capacity drives very well. Tested with a 6TB hard drive, no problem. Don't know what's the maximum capacity of this enclosure.2. Data transfer rate is very high. It seems to be limited by HDD's own speed, at least 200MB/s. Don't know the maximum speed of this enclosure.3. Perfect S.M.A.R.T. data and other metadata pass-through.4. Work on both Windows and Mac, no driver needed.Con:I suspect that the USB 3.0 cable that comes with this enclosure is bad. The cable is very short and thin. Most importantly, the enclosure keeps getting disconnected and reconnected on Windows, especially when there is a heavy workload. It is almost unusable. It is much better on mac though, and I can transfer 50-100Gs of data without encountering a disconnection in most cases. But it can still get disconnected once a while. The problem was eventually solved (both on mac and windows) after I replaced the USB 3.0 cable coming with this enclosure with a different one from another enclosure.I once considered to return this product due to the disconnecting issue, and I actually purchased another enclosure for this reason. But after I found that the problem was from the USB cable. I decided to keep this enclosure, since I love its tool-less design (I also kept the new enclosure to host my most frequently used hard drive). I hope my experience may help people who also suffer from disconnection issues on this product.