I recently bought a powerbook and am running a single 7 port usb 2.0 hub. I have a card reader and mouse plugged nto it so far. When I went to plug my new apple keyboard into it, it said that the keyboard uses to much power and it won't work. When I plugged the keyboard into the other usb port, it worked. Can you notrun the mouse and keyboard in the same port? Just curious. Thanks.