The uPAC-HON1 interface is a multi input media device compatible with Honda/Acura radios with a "XM" button. The 2 inputs will support any of the following combinations: iPod/Auxiliary, iPod/HD Radio (HD Radio sold separately) or Auxiliary/HD Radio (HD Radio sold separately). The iPod input can be used with full control from the radio or full control from the iPod. The uPAC-HON1 works with both 6-disc CD changer radios and navigation radios. If a factory SAT tuner or DVD video system is present, it will continue to operate as well. The optional HD Radio tuner is part number uPAC-HDRT.