It seems like there might be an issue with the USB connection on your Numark NV2 controller's right deck. To fix it, you can try the following steps:
1. Ensure that the USB cable is securely connected on both ends (controller and computer).
2. Try using a different USB port on your computer.
3. Restart both the controller and your computer.
4. If the issue persists, you could try updating the firmware of your Numark NV2 controller using the "Numark NVII Firmware Updater" program. Ensure you have the latest version of the firmware updater software and follow the instructions provided by Numark.
