I have a wired Apple keyboard (the kind with a number pad)...it's a couple of years old but that shouldn't matter. The keyboard is plugged into one of the USB ports on my 30" ACD. How come when I plug in a single USB2 thumb drive into either of the two USB ports on the bottom of the keyboard it says "USB Device Needs Power. Connect "USB 2.0 FD" to power or a USB port on this Mac." Does a thumb drive really require that much power?!? I realize it's daisy chained but both of my USB ports on the ACD are used (one for the keyboard, the other for a docking cord for my iPhone) and all four USB ports on my nMP are in use. I'm pretty sure my neighbor who has an iMac and a wired keyboard has no problem using the USB ports on the keyboard for his thumb drive. Does the iMac USB ports provide that much more power?!?