Avoid extra cables and RS-232 plugs by using the Custom Starmaster to Sky-Fi Cable. The one cable made specifically for using Sky-Fi & Starseek Wi-Fi setup with Starmaster using StarTrack and Sky Commander GoTo. Directions Plug RJ-11 labeled Sky-Fi into the Output of your Sky-Fi or Starseek Box and the RJ-11 Plug labeled Aux 2 into the Aux 2 RS-232 Port of your SkyTracker Control Box. Follow normal directions for using Sky-Fi or Starseek. IMPORTANT: Do Not Connect this cable into the AUX 1 Port, Hand Control Port, or Sky Commander Port, or any other than the AUX 2 Port. Make sure you know where the AUX 2 (RS-232) Port is located.