Efficient or more bi less.

Does the job that is asked. The USB 3 speeds are not found too affected (compared to a direct connection on the motherboard), except of course, if multiple devices are connected. Feeds without problems my WD 2TB Ultra.

Correct finish (plastic with aluminum coating). However, and this will be the only flaw of this product, it is too light. We must therefore expect that it is not stable even on a flat surface. It also means having to hold the formwork when something about it. For my part, I fixed it to my office.