motorola is no longer producing the
sb6120 modem. that's why everyone who's signing up for the newer packages are receiving the smc modems instead
there are rumours that a new modem will be replacing the motorola one.. but there's no eta on when that'll be available
there's no current option to purchase the sb6120 elsewhere and to add it onto your account. if you were lucky enough to obtain the modem, don't return/swap it as you will most likely never get it back