This USB 3.0 Hub anchor has 7 port and the corresponding power supply. In the description of the appliance, the manufacturer itself indicates that there may be problems with Logitech mouse and keyboard. But can not confirm this, because the unit worked from the moment of infecting immediately flawlessly and my existing keyboard and mouse from Logitech (mouse / Tastaturset brand Logitech WAVE) made no problems. Optical well designed it is an ornament on my desk. I'm very happy with it and it can only recommend.