I cannot use Bluetooth MIDI device with USB Bluetooth Adaptor.

If you install the attached driver to the USB Bluetooth Adaptor, you will not be able to use KORG BLE-MIDI Driver. Please uninstall the Driver attached to the USB Bluetooth Adaptor and use the standard Windows driver.

If your PC has an internal Bluetooth feature, you must first disable the internal Bluetooth feature to enable the USB Bluetooth Adaptor. Please refer to instructions of your PC and disable the internal Bluetooth feature.