This dock allows you to charge your PowerConnect Sirius Satellite Radio receiver as well as play it through your car stereo system. This car dock features a PowerConnect DC input, line output, FM output, & antenna input. This cradle is the same cradle that comes standard with all new Sirius receivers and uses the new PowerConnect DC power adapter with the red tip. Please note this cradle will not work with Legacy power adapters with black tips. This cradle will only work with DC PowerConnect power adapters with the red tip.