Adapter connects powerline interface module to PC for computer-generated commands . Downloadable software allows setup, testing, and control of UPB devices through PC. Use to allow your HAI system to control your Nuvo distributed audio system. Control your Universal Powerline Bus automation devices using your PC, or use HAI's control power to operate your Nuvo audio system. The HAI Serial Connectivity Cable links the HAI UPB Powerline Interface Module (sold separately) to your PC's serial port, so you'll be able to set up, test, and control your UPB devices using your computer. UPB devices are sold separately.