An alternative could be, if you happen to have 2 USB ports close by on the TV, you could try a Y cable. http://us.toshiba.com/images/ui3/accessories/toshiba-usb-y-cable-ba82010-300.gif
I use this for my Samsung TV + 2.5" vantec enclosure for my WD 750GB. But I know not all TVs have 2 USB ports right next to each other.
But if you have a powered USB hub, and your TV is compatible with that (not all TVs are, like mine), I'd go with blazorthon's suggestion.