Everything is said, despite a rather discreet design, this hub is not practical at all: the plug for the AC adapter is not very deep, so that it often disconnects the unexpectedly hub. Moreover, even mains powered, ports are not well managed and we must not hope to connect more than 2 hungry devices such as external hard drives, simultaneously.
Although I have not had any major malfunction, I quickly dropped to a hub unless "no-name".