You may need to check the information sheet of your servo, however they usually have three wires. The brown wire is negative (GND), red is positive (PWR) and orange is data input.

Plug in one male to male jumper wire into each hole in your servo’s socket. Plug the jumper connected to the brown wire into the socket labeled GND on CodeBug’s expansion port. Plug the jumper connected to the red wire into the socket labeled VCC on CodeBug’s expansion port. Finally plug the jumper connected to the orange wire into the socket labeled SDO on CodeBug’s expansion port.