The led on the controller and receiver in connection shows a lighting signal: connect the receiver to the pc and the led flashes quickly. Once the first controller is connected, the led will flash slowly. Once the stable led starts flashing, the second controller has been successfully connected.
The user can press select and r3 button press simultaneously to switch the vibration function.

Features
2.4ghz rf long distance wireless control, low delay and high sensitivity, easy to operation
can be used in racing games, fighting games, competitive games
os compatibility: windows 98/2000/xp/2003/vista, windows 7, windows 8.3
transmitter and receiver connect automatically (with led indicator)
power saving function, auto shut down the motor when low power (manual shut down is also available: press select + r3)
automatic sleep if unpaired in 1 minute, also auto sleep if no operation in 5 minutes when paired. Click start to awake
dual motors vibration, 256 level accuracy, 3d dual joysticks