The USB HD Radio interface cable is the updated version of MJS Gadgets COM port based cable. Now there is no more fussing with USB to RS232 adapters!  Simply plug one end of the cable into your Directed HMHD1000 or Visteon 3000 tuner and the other end of the PC. The audio is is as simple as plugging one end of the included audio cable into your tuner and the other end to your PC line input. You will then be able to control your radio through Centrafuse or Ride Runner.