XM SATELLITE RADIO® IS RECIEVED DIRECTLY THROUGH AN XM-READY™ CAR STEREO HEAD UNIT; CAN BE INSTALLED BEHIND THE DASHBOARD IN ORDER TO MAINTAIN A CLUTTER-FREE APPEARANCE; PROGRAMMING TECHNOLOGY ALLOWS A SINGLE INTERFACE ADAPTER TO BE USED WITH A VARIETY OF XM-READY™ HEAD UNITS; INCLUDES:; PROGRAMMABLE INTERFACE ADAPTER; MINI TUNER RECEIVER; MINI TUNER DOCKING STATION; MAGNETIC ROOF MOUNT ANTENNA; USB PROGRAMMING CABLE (REQUIRED TO DOWNLOAD PROTOCOL)