USB Hub with switch ... after Normally must be switched

But ....
In addition to the power connector is a button with which the HUB must be switched on. When the power was gone, so the HUB is first dead and there must be a manual switch. But as the power supply remains at the current, you may save "only" the power of the stroke and not to the power supply. And no power supply, only with USB, the stroke does not work either.

But since I need for my small server 24/7 for home automation system using a USB hub, which is automatically back of a power problem without manual intervention because the unit is not for me to use.

Conversely, if the hub is on the desk and one turns him only when needed ... it might even be a nice idea.