Unfortunately, I am a little disappointed with this product because it does not provide enough juice to my external HDD to operate (without separate power supply). However, I think that is also due to my laptop. Since I bought anyway an active USB 3.0 Hub harmonizes this together very well. For older laptops in combination with USB 3.0. - Sticks is a very good solution. With external HDD without a separate power supply, it works in my experience, not so good.
All in all I am satisfied with this product. It works the way I've wanted the active hub.
I highly recommend this product.