i got a google chromecast which is supposed to arrive tomorrow. like most of you when i get something its like a new toy and if i need battery or something and i don't have it it makes the experience less fulfilling. some of us never grow up. well i looked at my tv and i don't see a usb port that can power the chromecast on it. but i have an ac power supply with a usb port on it. its meant to be an ipod charger but the ipod cable unplugs. can this be used with the chromecast? isn't all usb power the same?