GWS USB FMS flight simulator cable. Use this to connect an RC transmitter to a Windows PC USB interface. Hitec-style round plug version (Some Futaba transmitters have this round plug as well. Look on the back of your transmitter and find the trainer port to be sure). Manufactured by Grand Wing Servo-Tech, this USB flight sim interface cable will connect your Hitec compatible RC transmitter's trainer port to your Windows PC so you can fly virtual RC models for all your favorite radio controlled airplanes and helicopters.