That's the one. It doesn't have a battery--it needs to be plugged in all the time. My car doesn't have USB, but I have a low-profile USB adapter in the cig lighter in the armrest. When I turn on the car, the power comes up and the gateway pairs immediately. Only bummer is that the power turns off when the engine turns off, so you can only listen when the engine is running. I don't know if the integrated USB behaves differently.
I'm using a Blackberry 9700... haven't tried any other phones with it.