The NXT I/O palette contains the VI

The NXT I/O palette contains the VIs that deal with NXT brick‐specific hardware. You can read sensors, control motors, communicate with Bluetooth, play sounds, log data, and display information to the NXT brick's screen. The VIs in this palette are called polymorphic VIs, meaning once you add them to the block diagram you can select an instance of the VI to run from the polymorphic VI selector menu. If you cannot find a VI that suits your needs from the polymorphic VIs, open the Expanded palette to find more related VIs.