Avoid extra cables and RS-232 plugs by using the Custom Celestron CGE, made specifically for using SkyFi & Starseek Wi-Fi setup with the Celestron NexStar Hand Controller. Compatible with: NexStar, CGE, CGEM, CPC, SLT & SE Mounts. Also available as a Straight Cable for $29.95 Directions Plug Larger RJ-11 Plug into the Output of your Sky-Fi or Starseek Box and the Smaller RJ-22 into the RS-232 Port of your Celestron NexStar Hand Controller. Follow normal directions for using Sky-Fi or Starseek. IMPORTANT: Do Not Connect this cable into the AUX, AutoGuide, or Hand Controller Port of the mount. Plug into the RS-232 Port of the Hand Controller Only.