Motorola Droid X

I need an external antenna since I frequently travel in low signal areas. I know that the Droid (without X) has an antenna connector on the back under the battery cover (under a small plastic plug).

Does the Droid X have this connector? Do you know what size/type connector it is? Do you know where I can buy an "antenna adapter cable" for this connector (if there is one)?

Thanks,
Jack