If your BR21 is built into a digital mixer, ensure the or "PC" button on your hardware is pressed. Without this hardware toggle, the driver will not initialize correctly in your DAW or recording software. Troubleshooting Common Issues Potential Solution Device not seen by Windows
The device often shows up in systems as ID 4c4a:4155 Jieli Technology USB Composite Device . jieli br21 driver verified
Try a different USB port. Some Jieli chips are sensitive to USB 3.0 interference; use a USB 2.0 port if available. If your BR21 is built into a digital