All of the major brand use connectors that are compatible with each other. You can use any servo with your Futaba radio, just plug it in to the reciever. The Futaba servos will have an alignment tab on them that the other brands don't have, so you'll have to make sure you plug your servo in correctly. But if it's not right (meaning the servo won't operate) simply pull the plug out and turn it around and plug it back in, you won't harm anyting if it's plugged in backwards.

Ken