Griffin Technology announced today that it is bringing back the limited edition Black PowerMate, which it first released in small amounts six months ago. Like the original brushed aluminum model, the US$45 device can be used as a volume knob, or programmed for any number of other uses such as a jog/shuttle wheel for movie editing or a scroll wheel for long documents. “We made a few PowerMates in black last year and everyone just went crazy for them. We were completely sold out in less than 48 hours. Now we’re happy to say they’re back — in black. Are you humming the song yet?” said Paul Griffin, CEO of Griffin.